136 ENTOMOLOGICAL NEWS. [May, ^03 



caying leaves. The family Corylophidse is placed in our cata- 

 logues near the Coccinellidse but differs from the latter in many 

 important characters. ' ' 



The only references to this insect which I have been able to 

 find in literature are the following : 



Corylophus marginicollis Le Conte, Proc. Acad. Nat. Sci. Phila., vol. vi, 



1852-3, p. 143. 

 Arihro lips marginicollis Le Conte and Horn, Classification of Coleoptera 



of N. A., 1883, p. 113. * . 



Corylophodes marginicollis Casey, Jour. N. Y. Ent. Soc, vol. iv, 1900, 



P- 63. 



I have not seen Matthews' * * Monograph of the Coleopterous 

 Families Corylophidse and Sphaeriidae" (London, 1899), where 

 probably mention is also made of this species. 



Full grown larva. (Plate VI, Figs. 1-6). — Length 1.5 to 1.9 mm., 

 breadth .84 to 1.12 mm. Form broadly elliptical, flattened, resembling 

 a much magnified crawling larva of a scale insect or of an Aleyrodes. 

 Color gray with brownish markings. Prothorax large, rounded anteriorly, 

 extending in front of the head ; tips of antenna the only parts of the head 

 which can be seen from above when the larva is at rest. When crawling 

 about in search of food, the head may be protruded so that its tip is also 

 visible from above. The thoracic segments above occupy nearly the 

 whole of the anterior half of the body ; behind these are nme abdominal 

 segments separated by indistinct sutures. All around the margin are 

 closely set spines of three kinds (Fig. 6) : simple, long slender spines ; 

 knobbed at the tip ; and shorter spines of variable length, at the base 

 thicker than the other two kinds and gradually increasing in thickness 

 toward the tip, bearing many barbs which project outwardly ; at the tip 

 is a cup-like depression surrounded by two or more barbs. Of the first 

 kind of spines there are only eight ; two on each side near the posterior 

 margin of the prothorax, one on each side near the posterior margin of 

 the mesothorax, and one on each side near the posterior margin of me- 

 tathorax. Of the second kind there are but six ; three on each side of 

 the terminal segment of the abdomen. The third kind occurs in large 

 numbers all around the margin, two hundred and forty-eight in one 

 specimen by actual count. On the dorsal surface are the spiracles, a 

 pair on each of the first eight abdominal segments. These form a row 

 on each side of the abdomen about half way between the lateral margin 

 and the middle line of the body. They are nearly circular in form, and 

 surrounded by a chitinous ring. Near the anterior lateral margin of the 

 second and eighth abdominal segments on each side is a circular opening 

 larger and more conspicuous than the spiracles and like them surrounded 

 by a chitinous ring. The third to eighth abdommal segments inclusive 



