THE CANADIAN ENTOMOLOGIST. 407 



BOOK REVIEWS. 

 The Mosquitoes of New Jersey and their Control. By 

 Thomas J. Headlee, Ph.D. Bull. No. 276, New Jersey Agricul- 

 tural Experiment Stations. Issued Jan. 30, 1915. 135 pp., 

 94 figures. 



The notoriety of the New Jersey mosquito is known to all, 

 and probably every American entomologist has some acquaintance 

 with the extensive work that has been done by the New Jersey 

 Agricultural Experiment Stations, under the direction of the late 

 Dr. J. B. Smith towards the control of these really serious pests. 



The present account is the outcome of a need that has been 

 felt for a "popular, yet accurate and easily available, manual on 

 the important mosquito life of New Jersey," the other publications 

 on this subject issued by the New Jersey Agricultural Flxperiment 

 Stations being now out of print or the supply practically exhausted. 



The first pages contain a brief account of the habits, life- 

 history, structure and classification of mosquitoes in general, in 

 which the author lays emphasis on the importance to anyone who 

 undertakes the control of these insects, of knowing exactly the 

 species with which he has to deal. This is followed by tables, 

 republished from the work of Messrs. H. B. Weiss and R. S. Pat- 

 terson, for the determination of the forty species of mosquitoes, 

 both in the adult and larval stages, that are known to occur in 

 New Jersey. 



Of these species sixteen are considered sufficiently important 

 to be treated in some detail, while of the remainder brief notes on 

 habits and distribution are given. The sixteen troublesome species, 

 only six of which are regarded as first-class pests, are divided into 

 four groups; the salt-marsh, house, swamp and woodland groups. 

 The six members of the salt-marsh group are the species that are 

 responsible for New^ Jersey's fame as a mosquito-infested state, 

 and these species naturally receive first consideration. 



The author describes at some length the methods of control 

 of the salt-marsh mosquitoes, now in operation by the state, of 

 draining the marshes or stocking the pools in localities where 

 draining into the sea presents serious difficulties, with killifish 

 {Fundnlus), various species of which are most important natural 

 factors in the control of these mosquitoes. Gratifying progress in 



