AMERICAN IIYMENOPTERA. 55 



luents of venter black ; legs wholly black, except the anterior femora 

 at tip before, and the tibicB and tarsi pale; wings clouded, darkest at 

 base ; first submarginal with incomplete cross-line ; the second and 

 third narrowest at top and bottom, their outer nervures curved. In 

 this species the second submarginal bulla is at the reception of the first 

 recurrent nervure. Specimens from Colorado are a little larger, and 

 have the back of head more or less yellowish. These may prove to be 

 a separate species. Long 31 — 4 lines. Br. wings 7 — 8i lines. 



2. S. abdominalis. 



Schizocerus abdominaiis, Cresson, Proc. Ent. Soc. Phil, iv, 1805,243,2, %. 

 Length 3J^ lines. Br. wings 7i lines. 



'■ % . Black, polished ; face clothed with short, pale, sericeous pu- 

 bescence ; mouth piceous ; antennoe as long as the head and thorax, 

 black; the third joint pale within, furcate and clothed with long black 

 pubescence. Thorax smooth and polished ; prothorax honey-yellow ; 

 tegulfe piceous. Wings ample^ tinged with fuliginous, especially about 

 the base; nervures and stigma black. Legs shining black, the ante- 

 rior tibiae and t-irsi pale. Abdomen bright honey-yellow, with two 

 transverse spots at the extreme base and the extreme tip fuscous." 



Colorado Territory. 



This is probably the male of the specimens of S. pliimvjera from 

 Colorado. 



3. Schizocerus ebeaus, n. sp. 



Black; antennae furcate, anterior legs pale before; wings blackish. Length 

 0.18. Br. wings 0.50 inch. 



% . Shining black ; antennae furcate above second joint, filiform, 

 pilose, juncture of second and third joints pale; nasus emarginate ; 

 mouth black ; body and legs black, the anterior pair pale beneath be- 

 low the knees; hinder tibiae somewhat swollen at apex; wings black- 

 ish opaque ; near the apex less obscure ; first submarginal cross-ner- 

 vure obsolete ; second and third submarginals contracted at top and 

 bottom, third submarginal narrow ; fourth submarginal quite large. 



New York. One % . 



In this and all the following species the second submarginal bulla 

 covers most of the nerve between the recurrent nervure and the second 

 transverse vein. 



4. Schizocerus sericeus, n. sp. 



Black, the head and thorax bronze sericeus ; tegulse and two edges of anterior 

 angle whitish; wings hyaline. Length 0.26— 0.30. Br. wings 0.50— 0.60 inch. 

 9 . Black : antennae short, not reaching scutel, clavate, but larger 

 in the middle than at apex, second joint very short; head and thorax 



