106 



The species was originally described from the female (Tr. Am. Ent* 

 Soc. II, 185) iiudeT the genus JEuscirrho2)ter us. Subsequently Mr. Grote 

 [Can. Ent. VIII, 99) referred it to Co2)idryas, and described the male 

 from a specimen from Mr. Meske (now in our possession), separating 

 the form from the Cuban JEuscirrhopterus freyi. Butler [Papilio 1, 129) 

 compares the genus to JEgocera, but adds nothing to the description. 

 Strecker (Lep. lihop. et Het., 1877, 132) describes the larva from a blown 

 specimen, and this is the first description of the larva made, thougli no 

 food-plant is given. Of the seven specimens before us (4 2 2,35 $ ) 

 the males are uniformally smaller, and have the clypeal projection 

 smaller and narrower, and covered with whitish, intermixed with a few 

 blackish, scales, whereas in the female these scales are black. A second 

 and less important character of the male is the tendency in the outer 

 discal spot of primaries inferiorly to elongate and become double. The 

 coloratioual differences mentioned by Grote have no sexual value. 



FURTHER CONCERNING EXTERNAL SPIDER PARASITES. 



By L. O. Howard. 



Fig. 21.— a, Polysphincta dictyn^, adult ; b, LiXYniiA communis with its parasitic larva— enlarged 



(original). 



After reading my note on this subject in the August number of Insect 

 Life (p. 42), Mr. J. H. Emerton, of Cambridge, wrote me that he had 

 sent me, among other hymenopterous parasites of spiders, several simi- 

 lar larvie, and that he found such instances almost every year. 



Upon looking over Mr. Emerton's material, which I had not previously 

 carefully examined, I found five small spiders, four of which supported 

 externally upon the dorsum of the abdomen i)anisitic larvje and one a 

 delicate cocoon from which a parasitic larva had been taken. The 

 spiders seemed to be Linyphia communis, L. marginata, and a s[)ecies of 

 U rig one. 



