Zoology

Geographic Variation in the North American Cyprinid Fish, Hybopsis gracilis

The Ancestry of Modern Amphibia: A Review of the Evidence

New Species and Synonymy of American Cynipidæ

Explanation of Terms Used in Entomology

Variation in the Muscles and Nerves of the Leg in Two Genera of Grouse (Tympanuchus and Pedioecetes)

Parasites: A Treatise on the Entozoa of Man and Animals. Including Some Account of the Ectozoa

Migration of Birds

A Guide for the Study of Animals

A New Subspecies of the Fruit-eating Bat, Sturnira ludovici, From Western Mexico

Natural History of the Salamander, Aneides hardii

House Flies

Camel Tracks

A Buzz in the Meadow

Into Africa

The Secret Life of Salmon

Extinct Madagascar

Hobby Farms: Rabbits

Apes and Monkeys: Their Life and Language

Physiology and histology of the Cubomedusæ including Dr. F.S. Conant's notes on the physiology

The zoology of the voyage of H.M.S. Beagle: Fossil mammalia