1918] The Ottawa Naturalist. 127 



PLATE VI. 



Fig. 20. Clionychia angusta. 



Fig. 21. Modiolopsis sp. Shortened bv pressure. 



Fig. 22. Cyrtodonta cf. affinis. 



Fig. 23. Cyrtodonta cf. persimilis. 



Fig. 24. Clidophorus neglectus. 



Fig. 25. Clidophorus noquettensis, enlarged. 



Fig. 26. Amphilichas cucullus. Type; A, left side of cephalon; B, anterior 



view; from Kimmswick limestone, in Alexander County, Illinois. 

 Fig. 27. Amphilichas cucullus. A, left side of cephalon; B, viewed from 



above; from Richmond section on east side of Little Bay de Noquette. 

 Fig. 28. Amphilichas sp. A, left side of glabella; B, viewed from above, 



magnified; from near top of Liberty member of Richmond, Clinton 



county, Ohio. 

 Fig. 29. Synhomalonotus christyi, magnified; Waynesville member of Rich- 

 mond, at Oxford, Ohio. 

 Fig. 30. Pterygometopus carleyi, magnified; Fairmount member of Maysville, 



at Cincinnati, Ohio. 

 Fig. 31. Chasmops breviceps, magnified. A, cephalon of enrolled specimen; 



B, imperfect cephalon; C, pygidium of enrolled specimen. From 



Liberty member of Richmond, at Richmond, Indiana. 

 Fig. 32. Chasmops sp. middle part of cephalon, with indications of missing 



parts. From Richmond strata on east side of Little Bay de 



Noquette. 

 Fig. 33. Bollia permarginata, magnified. A, left valve; B, right valve; C, 



posterior view of left valve. 



BOOK NOTICE. 



Outlines op Comparative Anatomy of Vertebrates. By 

 J. S. Kingsley, Professor of Zoology in the University of Illinois, Phil- 

 adelphia, P. Blakiston's Sons &: Co. Second Edition, Revised, 1917; 

 pp. 449; price 82.50. 



Students of comparative anatomy will welcome the second edition 

 of Professor Kingsley'- text-book which has already proved itself a 

 valuable acquisition to the English-speaking zoological and medical 

 schools. As compared to the first edition, the number of pages of 

 reading matter, as well as text-figures, has been considerably aug- 

 mented, and a very thorough revision made of the whole work. A 

 knowledge of the derivations of the terms used in anatomy and 

 embryology is undoubtedly of great assistance to the student's memory, 

 and a useful reference list of the most frequently occurring Latin and 

 Greek roots and their meanings has been appended. 



It has been the author's endeavour not to treat of anatomical 

 facts only in so far as they affect isolated representatives of several 

 classes, but to correlate and compare these facts with each other and 

 with the conditions in other animals. Thus a more intelligent repre- 

 sentation of the subject is made, answering the needs and satisfying 

 the conceptions of modern science. To the zoolgist who must neces- 

 sarily found his knowledge on the dissection of types, Professor 

 Kingsleys book will supply a deeper comprehension of the "analogies 

 and homologies" of vertebrate structure. ftfilC^J x 





