106 



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

 Soc. 11, 185) under the genus UuscirrhojJterm. Subsequently Mr. Grote 

 {Can. -Ent. VIII, 99) referred it to Gojjidri/as, and described the male 

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

 the form from the Cuban Uuscirrhopterus freyi. Butler [PopUio 1, 129) 

 compares the genus to ^gocera, but adds nothing to the description. 

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

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

 food-plant is given. Of the seven specimens before us (4 2 9,3$ S ) 

 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 meutioned by Grote have no sexual value. 



FURTHER CONCERNING EXTERNAL SPIDER PARASITES. 



By L. O. Howard. 



3 



Fig. 2i. — a, Polysphincta dictyx/E, adult ; 6, Lixyphia communis with its parasitic iarva— enlarged 



(orisinal). 



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 larvte, 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 parasitic larvse and one a 

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

 spiders seemed to be Linyphia communis, L. marginata, and a species of 

 Erigone. 



