210 THE CANADIAN ENTOMOLOGIST. 



Eriococcus Tinsleyi, var. cryptus, n. var. — $. When boiled in 

 potash becomes bright red ; dermal spines fairly numerous, about 24 /x 

 long; middle leg with femur -t- trochanter 150 /z, tibia 90, tarsus 

 (without claw) 100. Antennae (in females full of eggs) 6-jointed. 

 Formula? : 31(26)45; 321(46)5. Measurements of joints in /j. : (i.)3o. 

 (2.)27-36. (3.)87-ao. (4-)24- (S-) 21 - (6.)24-27- 



Had. — Under rocks, Las Vegas, N. M., April 19th, etc. (Wilmatte 

 P. Cockerell). I believe the roots it lives on are those of Gutierrezia. 

 This is probably a distinct species. 



Pseudolecanin?n Californicum (Ehrhorn). — This is to be added to 

 the fauna of New Mexico ; it was found in Las Vegas, on grass, by my 

 wife and myself. It was determined by Mr. Parrott. 



BOOK NOTICES. 



Mosquitoes : How they live ; How they carry disease ; How they are 

 classified ; How they may be destroyed. — By L. O. Howard, Ph. D. 

 New York : McClure, Phillips & Co., 1901. I. Vol., 12 mo., pp. 

 xv. + 241. (Price, $1.50 ; postpaid, $1.64.) 



For nearly ten years Dr. Howard has applied himself to the study of 

 the life-history and classification of North American mosquitoes, and to 

 practical experiments for their destruction. His success in the latter 

 direction has become widely known to the general public, while his 

 scientific work has caused him to be looked upon by entomologists as 

 our chief authority regarding these obnoxious insects. In the work 

 before us he has embodied in popular form the results of his observations 

 and investigations, and furnishes a most interesting and valuable hand- 

 book, written in attractive style and presenting in a clear and concise 

 manner all that is known at the present time on this subject. The title 

 of the volume gives an epitome of its contents, and shows at a glance 

 how completely it covers the ground and how full of useful information 

 it evidently is. We commend its perusal to all who suffer the tortures 

 inflicted by these tiny creatures — that is, to almost every inhabitant of this 

 continent — for the mosquito is ubiquitous and her attacks are often 

 serious. 



In the older settled parts of Ontario we are happily almost entirely 

 free from annoyance by mosquitoes, but there are many localities where 

 life on a warm summer's night is rendered almost unendurable by these 

 tormentors. The author shows how this plague may, in most cases, be 



