THE 
AMERICAN 
NATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE 
CONTENTS 
L The Compound and Mixed Nests of American Ants. Part II (Continued) 
Professor W. M. — 
II. Synopses of North-American Invertebrates. XVII. The 
Rotatoria . ‘ . . ^. ^. . Professor H. 8. JENNINGS 
III. Reviews of Recent Literature: Zod/ogy, Reptilian Affinities of Primitive 
Mammals, Anatomical Miscellanies, The Position of the Centrosome in 
— Botany, Bergen’s Foundations of Botany, Notes = - + + is 
IV. Correspondence: Corrections in Nomenclature of Hydroids 
Professor 
BOSTON, us 
GINN & COMPANY, PUBLISHERS 
9-13 TREMONT PLACE 
Entered at the Post-Offce, Boston, Mass, as Second-Class Mail Matter 
New York | ~ es aoe : 
70 Fifth Avenue .— gU-388 Wabash Avenue 37 Bedford Street, Strand 
VOL. XXXV, NO. 417 ^^ Se SEPTEMBER, Igor 
701 
