54 ENTOMOLOGICAL NEWS. [February, 



succeeding volume) giving the most recent results of taxonomic study, 

 extremely useful to those whose restricted special studies make it difficult 

 to keep in touch with all that is being done on lines unrelated to their own 

 work. 



Peripatus, which serves as a title for the volume, occupies but twenty- 

 six pages, is well-nigh exhaustively treated. The discussion of its Ar- 

 thropod affinities seems conclusive, and the anatomical details, embry- 

 ology, habits and the complete bibliography leave very little to be desired. 



Chapter ii, treating of the Myriapoda, will be read with greater interest 

 by our students from the fact that we have them abundantly about us. 



Beginning with chapter iii, Dr. David Sharp enters on a discussion of 

 the Insecta. 



In the treatment of the details of the Insecta many widely scattered 

 facts are brought together and discussed. Fortunately, prolixity has been 

 avoided, a difficult point to attain with such an extensive knowledge of 

 detail and the tendency to seek reasons for, or causes of, modification 

 which Dr. Sharp has so often shown. 



The Aptera are briefly treated in chapter viii, of great interest in many 

 ways, but difficult of study from the fragility of many of the species. 



The Orthoptera occupy chapters viii to xiv, and the Neuroptera xv to 

 xxi, and give, in a summary manner, the accepted arrangements of the 

 families composing those two orders. 



The next two chapters treat of the Hymenoptera. 



The volume concludes with an abundant index, without which a book 

 of this character suffers greatly. 



To the naturalist, whether teacher or student, the entire series of which 

 this volume forms a part, has great value, and the general reader will find 

 an abundance of interesting and easily assimilable information. G. H. H. 



I3DEX TO THE PRECEDING LITERATURE. 



The number after each author's name in this index refers to the journal, as numbered 

 in the preceding literature, in which that author's paper is published ; * denotes that 

 the paper in question contains descriptions of new North American forms. 



THE GENERAL SUBJECT. 

 Hart :*, Olliff 6, Behr 10, Eisen 10. No. 29. 



ARACHNIDA. 



Slingerlancl 4, Banks 27*. 



ORTHOPTERA. 



Morse 18*. 



NEUROPTERA. , 



Banks 10*. 



HEMIPTERA. 

 Distant ir, Fowler 17*, Chamblis 20. 



