2996 THE BUTTERFLIES OF NEW ENGLAND. 



The cocoons are narrow, satiny, pure white and spun in irregular masses 

 loosely held together by some few threads, but not embedded. 



Described from 17 specimens, bred from Thanaos juvenalis at Kirk- 

 wood, Mo. 



The species is close to emarginatus. which is distinguished, however, by- 

 its larger size, by the black antennae (brownish beneath only in the male) , 

 by the frontal tubercle, the punctate scutellum, the coarser punctation of 

 abdomen, the somewhat darker venation, and the cottony nature of the 

 cocoon mass. 



10. Apanteles emarginatus n. sp. 



Parasitic on Euphoeades troilus. 



Length of body, 2.4 ram. to 2.6 mm. ? : general color black; hairs white, very 

 short. Head: punctation moderately coarse and dense; face with a distinct median 

 tubercle near base of antennae ; mandibles reddish-yellow, their tips brown ; palpi pale 

 testaceous; antennae black, basal joint reddish-yellow beneath, with black apex. 

 TTiorax : with punctation on mesoscutum dense and coarse, and with an indication of a 

 median carina at posterior half; scutellum somewhat polished and sparsely punctate; 

 postscutelUim as in glomeratus ; metascutellum closely and quite coarsely rugose, 

 with an indication of a meditin and with a distinct, angulated, lateral carina; tegulae 

 testaceous : wings as in glomeratus : legs reddish-yellow ; hind coxae dusky on basal 

 half; extreme tip of femora and more or less of hind tarsi often dusky or blackish. 

 Abdomen with the two basal joints opaque, and with the base of the 3d densely and 

 quite coarsely rugose; basal joint longer than broad, narrowest at base, which is not 

 polished and only slightly concave ; rest of the abdomen above highly polished and 

 sparsely beset with slender white hairs ; lateral margins of basal joints 1 and 2, a quite 

 distinct, roundish spot each side of the 3, and the greatest portion of venter, reddish 

 yellow; ovipositor with the outer sheaths black and stout, and reaching about 1 mm. 

 beyond tip of abdomen. 



<y with the antennae more or less distinctly brownish beneath. 



Described from 7 specimens marked from troilus by Mr. A. Koebele, in 

 breedings at the Department of Agriculture ; but as I have no notes other 

 than the label, I feel some uncertainty about the host. In general appear- 

 ance the species approaches scitulus, which is readily distinguished, 

 however, by the absence of facial tubercle, coarser sculpturing and more 

 yellow abdomen and legs. 



The cocoons are very delicate, white and imbedded in a dense mass of 

 white, cottony silk, having a faint yellow tinge. 



11. Apanteles theclae Riley. 



Parasitic on Thecla sp. 



This species, described in my "Notes on N. A. Microgasters" (loc. cit.) 

 has several times been reared hj me from the larva of a Thecla found in 

 Georgia and Alabama upon the cotton plant. The butterfly has not been 



