VOL. XXXIII, No. 392” AUGUST, 1899 
THE 
AMERICAN 
NATURALISI 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE 
CONTENTS 
PAGE 
I. The Hopkins Seaside Laboratory . Professor VERNON L. KELLOGG 629 
II. The North-American Arboreal Squirrels. . . Dr.J. A. ALLEN 635 
III. Alvin Wentworth Chapman © Professor WILLIAM TRELEASE 643 
IV. Synopses of North-American Tariciobriiek II. Gordiaces (Hair — o 
Worms) Dr. THOMAS E. MONTGOMERY 647 
V. An Abnestand Wave in ‘Lake Erie : . HOWARD 8S. REED 653 
VI. Editorial Comment: Card Catalogue E The Introduction oo 
Exotic Animals, Colors of Deep-Sea Animals 66l- 
VII. Reviews of Recent Literature: General Biology, Fertility Inherited, inan 663 
of Living Protoplasm, Green Amæœbæ — Zoőlogy, The Fossil Bisons of 665 — 
` North America, Wild Animals I Have Known, Ichthyologia Ohiensis, = 
Recent Contributions of Dr. Boulenger to Ichthyology, Teeth of Lizards | a eas 
and Snakes, The Digestive Tract of the Cat, Regeneration of Arthropod- 
Appendages, Morphology of the Protobranchia, Innervation of the 
Pharynx, Holland’s Butterfly Book, Embryos of Bdellos stoma, The Primi- — 
tive Saar 2 Life History of the Dicyemids, Ongin of the — 
C e Head, Zoölogical Notes — Botany, The New York 677 — 
Botanical Cardi, The Chelsea Botanical Garden, Com Plants, Botan- = = 
ical Notes — Woolsey. The Physiography and ieee of the oven o 
Route s E 
ondence : The Needs of American + Anihropologists, ‘De Ata 
aoe > Hivneka a 
ie Publications Received -o 
' = BOSTON, U.S.A. a eet 
GINN & COMPANY, PUBLISHERS 
9-13 TREMONT PLAGE 
