240 Journal New York Entomological Society, ["^"o'- xxviii, 



and new generic assignments recognized in the work, also general 

 index. 



Professor Blatchley, to whose industry entomologists are already indebted, 

 has produced another book that will gain for him the thanks of many stu- 

 dents of Nature. This time it is about grasshoppers, katydids and their kin. 

 Following the introductory chapter on classification, structure, collecting, pres- 

 ervation of specimens, etc., there follows the " Descriptive Catalogue of the 

 Orthoptera of the Eastern United States and Eastern Canada." Under this 

 caption, which very closely gives the scope of the book, are included the ear- 

 wigs or Dermaptera, which are often treated separately. The work is an 

 expansion of the author's Orthoptera of Indiana, issued in 1903. In the 

 present volume 353 species and 58 varieties are recognized, of which the 

 author, pn page 4, states that he has personally examined all but five. There 

 are keys for the separation of suborders, families, subfamili'es, genera and 

 species; each species is also more fully described under a separate heading, 

 with notes on distribution, song (if it has one), habits, etc. There are also 

 many helpful illustrations. The writers who have made observations which 

 the author has used in preparing these accounts are given full credit, and if 

 Mr. Blatchley does not agree with their opinions, both sides are stated, so 

 that the student will be aware that doubt exists. 



It is not to be wondered at that Mr. Blatchley does not agree with some 

 other students as to the limits of certain species, or the names by which they 

 should be known. At the present time we do not know exactly how many 

 species of oaks inhabit eastern North America, nor are botanists agreed as 

 to the names in use ; grasshoppers have been studied much less, and are far 

 more elusive. The writer, for instance, from his experience afield and from 

 the specimens collected on Long Island and Staten Island, thinks that Sphara- 

 gemon wyomingianum Thomas and Spharagemon scudderi Morse should be 

 considered as distinct, while Mr. Blatchley thinks that scudderi is a " syno- 

 nym of ivyomingiannm," but as usual he devotes much space to the dissenting 

 opinions. Gradually these matters will be more fully adjusted, and meanwhile 

 the entomologist will be thankful that he has at hand so useful and accurate 

 a book containing information often in great detail concerning the Orthoptera 

 of eastern North America. 



Wm. T. Davis. 



Manual of the Orthoptera of New England, including the 

 Locusts, Grasshoppers, Crickets, and their Allies. By Albert 

 P. Morse. Proceedings of the Boston Society of Natural History. 

 Vol. 35, No. 6, pp. 197-556, plates 10-29. April, 1920. 



This excellent work, which shows great care in its preparation and knowl- 

 edge of the subjects treated, has been promised to students of Nature for 

 several ye'ars, and will now be received with much appreciation. The intro- 



