424 Seventific Intellagence. 
Cheraphilus, which has recently been adopted by G, O. Sars and 
persistently in nearly all of Mr. Kingsley’s papers. s. I. SMITH. — 
5. The Crayfish: an Introduction to the Study of Zoology 
by T. H. Huxtey. 371 pp. 8vo. New York, 1880 (D. Appleton 
& Co.)—This last volume of the International Scientific Series 1s 
far more interesting than ordinary text-books of zoology and well: 
deserving of careful study. Though it treats specially of the natural 
history, physiology, morphology, comparative morphology, @& 
tribution, and origin of crayfishes, it admirably fulfills the authors 
desire, as expressed in the preface, “to show how the careful study 
of one of the commonest and most insignificant of animals, leads 
us, step by step, from every-day knowledge to the widest general- 
izations and the most difficult problems of zoology.” <A large 
part of the excellent wood-cut illustrations are new, and many are 
unusually beautiful for a work of this class. The figures (after 
Bate) on page 282, are of Carcinus menas, not Vancer pagurus 
as labeled. ; 8.1 
