Allantus in the United States. 250 



Hab. Farmington, Conn. 



One specimen examined. 



Sp. 36. A. atroviolacens. Harris. H. Cat. Body black ; 

 wings violaceous. (Long. 0.50 in. Ex. alar. 1.10 in.) 



$ Body black, in some lights having a faint bluish 

 tinge; antennae long, having a rufous tinge beneath; body 

 shining, and coarsely punctured on head and thorax, more 

 finely on mesothorax ; face black ; clypeus angulale ; la- 

 brum almost conical; mandibles large, punctured, and, 

 with the labrum, fringed with hair; abdomen much flat- 

 tened ; legs punctured, posterior pair long ; a white line on 

 posterior coxse above ; anterior tibiae and tarsi, and apical 

 joints of all the tarsi, piceous ; wings violaceous, almost 

 opaque, irregularly marked with whitish lines along the 

 apical nervures. 



$ The antennae of the male are piceous, brightest to- 

 ward the tip. 



Hab. Connecticut, Massachusetts, Maine (H. Coll.). 



Five specimens examined, one of which, without the 

 bluish tint, is called A. carbonarius in the MSS. Catalogue 

 of Dr. Harris. This resembles A. tardus in form. 



Sp. 37. A. ritfipes. 



Tenthredo rvfipes.' Say. Long's Sec. Ex. II. 318. 9. 



Hab. Northwest Territory (Say), Massachusetts (H. 

 Coll. and Mr. Scudder). 



Two specimens examined. 



Sp. 38. A. rufopectus. Nov. spec. Body black ; anten- 

 nae, pectus, and legs, rufous. (Long. 0.40 in. to 0.42 in. 

 Ex. alar. 0.85 in. to 0.90 in.) 



9 Black ; antennae dark rufous, tips of joints above 

 black (in some cases, the first and second joints are black 

 above) ; clypeus angulate ; labrum orbicular, and, with the 

 mandibles, fringed with hair ; labrum, base of mandibles, 

 and palpi, yellow; body shining ; wing-scale, edge of col- 

 lar, two dots back of scutellum, and four radiating lines, 



