166 THE CANADIAN ENTOMOLOGIST 



noctua oniista Grt. very abundant, doing considerable damage to 

 iris in many parts of the state. Zeuzera pyrina Linn, noted in 

 lilacs, shade trees, pear and apple stock in northern New Jersey 

 nurseries. Hyphantria cunea Dru. fairly common on all kinds of 

 trees and shrubs, Certomia catalpa Bois. on catalpa. Vanessa 

 antiopa L. on Lombardy poplars and elms. Thyridopteryx ephem* 

 erceformis Steph. on spruce, arbor vitse, lilac, maple and deciduous 

 cypress. Pteronus ribesi Scop, on currants and gooseberries. Vespa 

 crabro L. and allied species stripping bark from various plants, 

 especially lilacs. Leptobyrsa explanata Heid. on rhododendrons. 

 Trioza tripunctata Fitch, on blackberries in southern New Jersey 

 nurseries. Eriophyes pyri Pgst. on pear. Eriophyes qiiadri- 

 pedes Shimer. common on silver maple. Aphis forbesi Weed on 

 strawberry roots in southern New Jersey nurseries, scar ce.Chermes 

 abietis Linn, scarce, on spruce in northern New Jersey. Aphis 

 malt Fabr. very abundant the past season; did considerable 

 injury to apple stock. Schizoneura lanigera Hausm. on apple. * 

 Tetranychus bimacidatus Harv. on evergreens, shade trees. 



Harry B. Weiss, New Brunswick, N J 

 BOOK REVIEWS. 



MEDICAL ENTOMOLOGY. 



"Handbook of Medical Entomology." By W. A. Riley, Ph.D., 

 and O. A. Johannsen, Ph.D., IX, 348 pp., 172 figs. Comstock 

 Publishing Co., Ithaca, N. Y. Price, $2.00. 



This volume is the outgrowth, we are told, "of a course of 

 lectures along the lines of insect transmission and dissemination of 

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

 Entomology of Cornell University during the past six years." It 

 is intended "to afford a general survey of the field and primarily 

 to put the student of medicine and entomology in touch with the 

 discoveries and theories which underlie some of the most important 

 work in preventive medicine. At the same time the older phases 

 of the subject — the consideration of poisonous and parasitic forms 

 — have not been ignored." 



The authors do not expect that the book will meet the needs 

 of the specialist, that is not its purpose, which is to serve as a book 

 of reference to physicians, sanitarians, working entomologists and 



