CHARLES W. HOOKER. 31 



slightly darker; clypeal foveae distinct; mandibles stout, bidentate, 

 tipped with black. 



Thorax of the general color, smooth and shining or at the most with 

 microscopic punctation ; mesonotum with its parapsidal furrows dis- 

 tinct only at the anterior edge ; metathorax with two transverse carinae, 

 the anterior even, the median angularly arched and behind it several 

 indistinct carinse radiating from the insertion of the abdomen. 



Wings distinctly smoky, stigma flavous, nervures black ; discocubital 

 vein appendiculate, nervulus antef ureal to interstitial, nervellus broken 

 at or near the middle. 



Legs of the general color or slightly lighter ; abdomen often varied 

 with black, long and slender, strongly compressed. 



Described from three 9 cotypes. 



Cotypes. — Three 9 's, American Entomological Society. 



This subspecies may be readily recognized by the long 

 slender abdomen, which I have not seen in any other species. 

 This, with the subfuliginous wings and reddish-brown color, 

 makes it conspicuous in a series of Ophions. In structure 

 and color, aside from the long slender abdomen, it agrees 

 with dark specimens of bilineatus. 



Distribution . — Colorado. 



OpMon slossonse Davis.* 

 Ophion slossoncB T)a.v\s, Ent. Mus., IV, p. 135, 9, orig. descrip. 



Conn. ; Carbondale, 111 1893. 



- " Ashmead, Trans. Amer. Ent. Soc, XXIII, p. 193. 



(apparently a syn. of T. texanus Ashm.) 1896. 



Dalla Torre, Cat. Hym., Ill, p. 198, listed 1901. 



" ferrugipennis Felt, N. Y. Mus., Bull. 76 (nineteenth Rept. 



State Ent.), p. 122, pi. 2, fig. 1, N. Y 1903. 



" slossoncB Szepligeti, Gen. Ins., Hym., 34me Fasc, p. 32, n. 



120, listed 1905. 



Ferruginous to fulvo-ferruginous , wtngs tinged with fuscous or en- 

 tirely deep fuliginous, discocubital vein appendiculate , nervures black, 

 stigma fulvous. 



Length, 19-25 mm. ; wing, 18-22 mm. ; spread, 38-46 mm. ; antennae, 

 22-28 mm. 



Fulvo-ferruginous to ferruginous, clothed with fine short pubescence, 



* Mr. Davis writes : " I take pleasure in dedicating this new species 

 of Ophion to Mrs. Annie T. Slosson who bred the specimen from a 

 dark cocoon of one of the larger species of Acronycta (Apatela) last 

 season (1882). The parasitized cocoon was taken in Connecticut." 



TRANS. J^M. KNT. SOC, XXXVIII. 



