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/3073534,60,60)
Published in The Canadian Entomologist, in volume 32, pages 337-347
Created: 2012-07-25, 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/39922037,60,60)
Published in Jour Washington Acad Sci, in 1926, in volume 16, pages 53-67
Created: 2014-01-30, modified: 2014-01-30![](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/50578555,60,60)
Published in Bulletin of the Brooklyn Entomological Society, in 1936, in volume 31, pages 18-20
Created: 2016-05-17, modified: 2016-05-17![](https://www.biodiversitylibrary.org/pagethumb/50670244,60,60)
Published in Entomologica Americana, in 1932, in volume 12, issue 1931, pages 1-69
Created: 2016-05-17, modified: 2016-05-17![](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