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On some forest Lepidoptera with descriptions of new species, larvae, and pupae

Published in Proceedings of The United States National Museum, in 1920, in volume 57, pages 53-96

The Cumberland Falls, Whitley County, Kentucky, meteorite

Published in Proceedings of The United States National Museum, in 1920, in volume 57, pages 97-105

New species of Lepidoptera in the United States National Museum

Published in Proceedings of The United States National Museum, in 1920, in volume 57, pages 107-152

Observation on living specimens of Iridia diaphana, a species of Foraminifera

Published in Proceedings of The United States National Museum, in 1920, in volume 57, pages 153-158

Three new species of Indian drynnid parasites of rice leaf-hoppers

Published in Proceedings of The United States National Museum, in 1920, in volume 57, pages 159-161

American records of whales of the genus Pseudorca

Published in Proceedings of The United States National Museum, in 1920, in volume 57, pages 205-207

Descriptions of twenty-five new species of North American Hymenoptera

Published in Proceedings of the United States National Museum, in 1920, in volume 57, pages 209-231

Annotated List of the recent Brachiopoda in the collection of the United States National Museum with descriptions of 33 new forms

Published in Proceedings of the United States National Museum, in 1920, in volume 57, pages 261-377

Holarctic tribes of the ichneumon-flies of the subfamily Ichneumoninae (Pimplinae)

Published in Proceedings of The United States National Museum, in 1920, in volume 57, pages 379-396

Diabantite, stilpnomelane, and chalcodite of the trap quarries of Westfield, Massachusetts

Published in Proceedings of The United States National Museum, in 1920, in volume 57, pages 397-403

Petrography of some lamprophyric dike rocks of the Coeur d'Alene mining district, Idaho

Published in Proceedings of The United States National Museum, in 1920, in volume 57, pages 475-495

Synopsis of the trematode family Heterophyidae with descriptions of a new genus and five new species

Published in Proceedings of The United States National Museum, in 1920, in volume 57, pages 527-573

Pleistocene peccaries from the Cumberland Cave deposit

Published in Proceedings of The United States National Museum, in 1920, in volume 57, pages 651-678

Report on Cephalopods collected during 1906 by the United States Bureau of Fisheries steamer "Albatross" in the northwestern Pacific

Published in Proceedings of the United States National Museum, in 1920, in volume 57, issue 2310, pages 163-203

Larvae of North American beetles of the family Cleridae

Published in Proceedings of The United States National Museum, in 1920, in volume 57, issue 2323, pages 575-649

Notes on a collection of shells from Trinidad, California

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 1-5

The North American Ichneumon-flies of the tribes Lycorini, Polysphinctini, and Theroniini

Published in Proceedings of the United States National Museum, in 1920, in volume 58, pages 7-48

A classification of the American operculate land moilusks of the family Annulariidae

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 49-82

Descriptions of some Pleistocene vertebrates found in the United States

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 83-146

The chemical composition of hydrotalcite and the hydrotalcite group of minerals

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 147-153

The dipterous genus Zygothrica of Wiedemann

Published in Proc. U.S. Natl. Mus, in 1920, in volume 58, pages 155-158

The west American mollusks of the families Rissoellidae and Synceratidae, and the rissoid genus Barleeia

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 159-176

New syrphidoid, cynipoid, and chalcidoid Hymenoptera.

Published in Proceedings of the United States National Museum, in 1920, in volume 58, pages 177-216

Preliminary diagnoses of new cephalopods from the Western Atlantic

Published in Proceedings of the United States National Museum, in 1920, in volume 58, pages 293-300

New fresh-water shells from Guatemala

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 301-302

Some recent accessions to the mineral collections of the United States National Museum

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 303-305

A small collection of fishes from Soochow, China, with descriptions of two new species

Published in Proceedings of the United States National Museum, in 1920, in volume 58, pages 307-321

Recent accessions in the Division of Applied Geology

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 323-326

Notes on the meteorite of Estherville, Iowa, with especial reference to itsincluded "peckhamite" and probable metamorphic nature

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 363-370

Analyses and optical properties of amesitc and corundophilite from Chester, Massachusetts, and of chromium-bearing chlorites from California and Wyoming

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 371-379

Additions to West Indian Tertiary decapod crustaceans

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 381-384

Diptera of the superfamily Tipuloidea found in the District of Columbia

Published in Proceedings of the United States National Museum, in 1920, in volume 58, pages 385-435

Notes on anglesite, anthophyllite, calcite, datolite, sillimanite, stilpnomelane, tetrahedrite and triplite

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 437-453

Two new genera and species of acanthocephalous worms from Venezuelan fishes

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 455-466

A new polychaetous annelid of the genus Nereis from Brazil

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 467-468

Some minerals from the old tungsten mine at Long Hill in Trumbull, Connecticut

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 469-482

Observations on the nematode genus Nematodirus with descriptions of new species

Published in Proceedings of the United States National Museum, Washington, in 1920, in volume 58, pages 577-588

Boulangerite, bismutoplagionite, naumannite and a silver-bearing variety of jamesonite

Published in Proceedings of The United States National Museum, in 1920, in volume 58, pages 589-607

Report on the Mammalia collected by Mr. Edmund Heller during the Peruvian Expedition of 1915 under the auspices of Yale University and the National Geographic Society

Published in Proceedings of The United States National Museum, in 1920, in volume 58, issue 2333, pages 217-249

Amphibians and reptiles from southern Peru collected by the Peruvian expedition of 1914-1915 under the auspices of Yale University and the National Geographic Society

Published in Proc. U. S. Natl. Mus., in 1920, in volume 58, issue 2352, pages 609-620