1895.] NATURAL SCIENCES OF PHILADELPHIA. 19 



tremity, the termination of this band being about (or hardly) as far 

 above the level of the insertion of the antennae as the length of the 

 scape. Cheeks yellow. Antennae dull chrome-yellow, funicle and 

 flagellum blackened above. 



Thorax, seen from above, much the shape of a Goodale pear (see 

 Downing), metathorax abruptly truncate and rapidly descending, 

 rugulose. 



Lateral margin of prothorax yellow. Teguhe pale testaceous. 

 Legs pale rufous, or one might say brownish- orange. 



Wings hyaline, beautifully iridescent, veins and stigma distinct, 

 dark (sepia) brown. The recurrent and transverso-cubital nervures 

 more or less broken by hyaline spots. 3d discoidal distinct. Mar- 

 ginal about as long as stigma. 



Abdomen pitch-black, shiny, hind margins of 3d and 4th seg- 

 ments obscurely brownish. 



Recognized by its black abdomen and orange- rufous legs; nearest 

 to nitldella in its face markings, but still quite distinct. 



.Ha&.— Santa Fe, N. M., June 25th. (Ckll., 1,096.) 



Mr. Fox remarks that this is "very distinct and new." I owe to 

 him the opportunity of describing it, as I had sent it to him before I 

 became interested in the genus, and he kindly returned it that it 

 might be included in the present paper. 



