278 THE CANADIAN ENTOMOLOGIST. 



NEW SPECIES OF CHIOr^ASPIS. 



BV K. A. COOLEV, B. S., AMHERST, MASS. 



At the request of Prof. T. I). A. Cockerell, through correspondence 

 with Prof. Fernald, I was induced to take up the study of the genus 

 C/iionaspis, and Prof. Lull the genus Pulvinaria. Prof. Fernald prepared 

 and sent out a circular letter to all entomologists whose addresses could 

 be obtained, in this and other countries, and personal letters were also 

 sent to the leading coccidologists, asking for as many species as possible 

 to aid in the preparation of monographs of these two genera. The 

 result has been most gratifying, for already a very large amount of 

 material has been received. 



In the material before me the following new species of Chionaspis 

 have been found, and are published now in preference to waiting till the 

 monograph is issued. The studies on these insects are being made in 

 Prof. Fernald's entomological laboratory connected with the Massachusetts 

 .Agricultural College, where every possible facility is afforded for breeding 

 and studying insects, together with very complete literature of the subject. 



Chionaspis Cocker elH, n. sp. 



Scale of female. — The female scale is about 3.2 mm. long, straight 

 or very slightly curved, moderately thick in texture, slightly convex, white, 

 with the exuviae pale yellowish-brown, the second skin being covered with 

 secretion. 



Female. — The pygidium is distinctly notched at the end, the sides of 

 the notch being formed by the divergent median lobes. These lobes are 

 firmly united at the base and have serrate edges. Two distinct parallel 

 spines arising from the bottom of the notch, are about as long as the 

 distance between the inner edges of the lobes at the base. Compared 

 with the other lobes of the pygidium the median ones are larger and 

 extend farther into the body. Each lobe of the second pair is composed 

 of two well rounded and distinct lobules, the incision between them 

 extending to the base of the lobe. Ihe inner lobule is larger and extends 

 posteriorly about even with the median lobes. The third pair of lobes 

 may be present or aborted ; when present they are broad and low, with an 

 elongated i)ore anterior to the base of each. Between the median and 

 second pair is a minute spine, followed by a plate which is about as long 

 as the second pair of lobes, and following these is a conical projection 

 bearing a marginal pore. Outside of the second lobe is a spine, a plate 



