IIYMENOPTEROUS PARASITES. IQQQ 



The cocoons are arranged on end, side by side, in moderate masses, the 

 whole covered with loose silk and the color pure wiiite. 



15. Apanteles pholisorae n. sp. 



Parasitic on Pholisora catullus. 



Length of body, 2.4 mm. — 2.7 mm. 5 : Color black with much reddish-yellow on 

 abdomen. Pubescence rather dense and white. Head : punctation coarse and uniform ; 

 a deep puncture on each side of clypeus ; facial carina quite di,?tinct ; mandibles yellow- 

 ish-brown; palpi pale testaceous; eyes brown, antennae black, longer iu the male than 

 in the female, the basal joint often yellowish-brown, and the flagellum beneath, in both 

 sexes frequently brownish. Thorax : scutellum sparsely punctate and somewhat pol- 

 ished ; postscutellum very narrow, its median fovea small and often indistinct ; metascu- 

 tellum rugose, its median carina distinct, the lateral carinae straight and parallel with it ; 

 tegulae brownish : wings normal, the radial vein variable and either uniformly curved 

 or more or less angulated; costa, stigma and radial vein liglit brown, the other veins 

 paler : legs honey-yellow ; anterior and median coxae brownish, the hind pair black; 

 hind femora and tibiae blackish at tip; all tarsi slightly dusky, the posterior pair dark- 

 est; claws blackish. Ahilomeni^a.rxo\y , slender, tapering gradually from joint 2 toward 

 the end ; basal joints 1 and 2 black and closely punctate; joint 1 longer than broad, 

 narrowest at base, broadening gradually toward hind border where the angles are 

 slightly rounded, the basal poi'tion somewhat concave; joint 2 with a rather distinct 

 median carina; remaining joints polished and sparsely hairy, their color variable, either 

 entirely honey-yellow, with only the sutures blackish or with only 2 yellowish spots 

 at the hind border of 3, with all gradations between these extremes ; flexible lateral 

 margin of 1 and 2 and often the whole venter, honey-yellow ; sheath of ovipositor 

 black and reaching somewhat beyond the tip of abdomen. 



Resembles both A. scitulus and A. emarginatus. From the latter it is 

 distinguished by the absence of the facial tubercle, by the denser and 

 coarser sculpturing of the head and absence of median carina on posterior 

 half of mesoscutum ; by the median carina and straight lateral ridge on 

 the metascutum and the more slender abdomen. From scitulus it differs 

 in the smaller size, the more slender abdomen, with its carina and differ- 

 ent sculpturing. 



Described from 16 specimens, reared from Pholisora catullus, one by 

 William H. Edwards, the rest by myself. 



The cocoons are normal, perfectly white, with much loose silk adhering 

 to them, and either single or in small masses. 



16. Apanteles cassianus Riley. 



Parasitic on Xanthidia nicippe. 



This species was described by me (loc. cit., p. 12) from cocoons found 

 at East St. Louis, 111., upon Cassia marylandica with Xanthidia nicippe 

 from which they had in all probability issued. I reproduce the description : 



"Length, 1.5 to 2.2 mm. $ ? . Black; palpi white; mandibles sometimes testaceous; 

 knees, the four anterior tibiae; the basal half of posterior tibiae, and all the tarsi ex- 



