234 ENTOMOLOGICAL NEWS. [May, '15 



literature the most recent ideas, and they have gleaned from... many 

 sources in various languages." (Preface). 



Perhaps the first thing to strike the reader on looking over this 

 volume is that for the first time, we believe, in an American text-book, 

 the newer classifications are employed. Thus "the unified ordinal 

 groups essentially as limited by Handlirsch" are adopted, and the 

 "Conspectus of the Higher Groups of Insects" on page i begins with 

 "Class Pterygogenea, Subclass Orthopteroidea" under which, as orders, 

 are the Grylloblattoidea, Orthoptera [i. e. Saltatoria only], Phasmoidea, 

 Diploglossata, Dermaptera and Thysanoptera. Then follows the Sub- 

 class Blattaeformia and so on. The Hymenoptera are divided into 

 the Chalastogastra and Clistogastra, the primary subdivisions of the 

 latter being the Ichneumoniformia, Vespiformia, Spheciformia and 

 Anthophila. In the Coleoptera the results of the labors of Lameere, 

 Ganglbauer, Kolbe and Gahan are seen in the recognition of the two 

 suborders, Adephaga and Polyphaga, with fifteen groupings of the 

 families of the latter. The subclass Panorpoidea embraces the orders 

 Panorpatae, Trichoptera, Lepidoptera, Diptera and Suctoria. Curious- 

 ly enough, the Thysanura, Campodeoidea, Collembola and Miriento- 

 mata (each of which, as with Handlirsch, ranks as a class, hence co- 

 equal to the Pterygogenea) are at the end of the Conspectus, after all 

 the highly specialized groups. 



The key to the 37 Orders occupies pp. 6-12. The keys to the families 

 fill pp. 13-83. There are 427 outline figures on the 18 plates which give 

 one an idea of the appearance of the representatives of many families 

 or of parts of the body used in classification. Those on Plate 17 are 

 of immature stages, those on Plate 18 of terrestrial Arthropods not 

 insects. The figures are chiefly redrawings by Mrs. Brues. 



There is a Glossary of Special Terms, pp. 121-127, and an Index to 

 Genera and Higher Groups, pp. 128-140. 



Whether we use the newer classifications or not (and the reviewer 

 has been employing many of them in his University classes), a valuable 

 feature of this book is that it will introduce them to many American 

 students to whom they seem to be more or less unknown. P. P. C. 

 {Advertisement}. 



HANDBOOK OF MEDICAL ENTOMOLOGY. WM. A. RILEY, PH.D., Professor 

 of Insect Morphology and Parasitology, Cornell University, and 

 O. A. JOHANNSEN, Ph.D., Professor of Biology, Cornell Uni- 

 versity. Ithaca, New York. The Comstock Publishing Com- 

 pany, 1915. Pp. ix, 348. 174 figs. Postpaid $2.20. 

 This "Handbook of Medical Entomology is the outgrowth of a 

 course of lectures along the lines of insect transmission and dissemin- 

 ation of diseases of man given by the senior author in the Department 



