Published in Quaestiones Entomologicae, in 1990, in volume 26, issue 4, pages 703-705
Created: 2016-11-20, modified: 2016-11-20![](https://www.biodiversitylibrary.org/pagethumb/50590951,60,60)
Published in BULL BROOKLYN ENT SOC, in 1931, in volume 26, issue 2, pages 91-95
Created: 2016-05-18, modified: 2016-05-18![](https://www.biodiversitylibrary.org/pagethumb/3085675,60,60)
Published in The Canadian Entomologist, in 1903, in volume 35, pages 227-232
Created: 2011-06-03, modified: 2017-01-06![](https://www.biodiversitylibrary.org/pagethumb/2163134,60,60)
Published in The Canadian Entomologist, in 1902, in volume 34, pages 147-157
Created: 2011-06-03, modified: 2017-01-06![](https://www.biodiversitylibrary.org/pagethumb/1,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506961,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506964,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506963,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506931,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506939,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1887, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506941,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1887, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506943,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1887, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506915,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506917,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506919,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506907,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506909,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506911,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506935,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506937,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506925,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506927,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506913,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1885, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506905,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506855,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1876, pages 1-4
Created: 2017-06-23, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506871,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1883, pages 1-4
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506875,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-4
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506879,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-4
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506887,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506889,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506891,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506893,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506859,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1876, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506863,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1881, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506899,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506901,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506865,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1882, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506867,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1883, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506895,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506897,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506885,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506883,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1884, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506945,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1887, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506947,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1887, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/16197903,60,60)
Published in Proceedings of the Entomological Society of Washington, in 1991, in volume 93, pages 230-239
Created: 2010-11-04, modified: 2011-06-21![](https://www.biodiversitylibrary.org/pagethumb/53506929,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506933,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506921,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506923,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1886, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/53506869,60,60)
Published in John Ball letters to Asa Gray, 1876-1888, in 1883, pages 1-2
Created: 2017-06-24, modified: 2017-06-24