62 ACADEMY or NATURAL SCIENCES 



7. A. CALIPTERA. — Fundamental color brown; wings with 

 three-brown bands, and a silvery spot on tbe costal base. 



Inhabits Arkansa. [47] 



Thorax black-brown, with very short yellowish hair, and longer 

 hair on the anterior edge, a pale fundamental spot on the poste- 

 rior angle ; feet pale reddish-brown ; poisers yellowish ; scutel 

 reddish-brown; wings brown at base, then a hyaline arquated 

 equal band divided by nervures into five compartments, then a 

 brown band bifid on each margin, and rather narrower in the 

 middle, then an irregular hyaline band very narrow towards the 

 costal margin, abruptly produced in the middle to the tip of the 

 central cellule, then an irregular brown band including a hyaline 

 triangular spot on the inner margin of the wing, and another at 

 the costal margin which almost separates a portion of the band 

 into a distinct triangular spot, lastly an irregular hyaline spot at 

 tip, costal margin, excepting where it is crossed by the first hya- 

 line band, brown; tergum, fundamental color yellowish -brown, 

 with very short black hair, first segment black, second with white 

 hair on the basal half, and a large black spot on the middle, 

 third with a black spot on the middle, and a white hairy spot on 

 the posterior angle, fourth with a black spot. 



Length nearly seven-twentieths of an inch. 



Belongs to Wiedemann's third tribe. 



ASILUS Lin. Meig. 



1. A. VERTEBRATUS. — Tergum pale cinereous ; segments 

 blackish at base; tibia testaceous. [48] 



Inhabits Missouri. 



Head yellow ; proboscis and antennae black ; thorax yellowish- 

 cinereous, the dusky line divided by a cinereous one ; wings red- 

 dish-brown; feet black, with cinereous hair, tibia and tarsi above 

 testaceous ; tergum whitish-cinereous, with a large transverse 

 blackish subtriangular spot at the base of each segment, terminal 

 anal segments black ; venter immaculate. 



Length to the tip of the wings one inch and two-twentieths. 



This species belongs to the second tribe in Wiedemann's di- 

 vision of this genus. 



[This is probably a Promachus Loew. — Sacken.] 



[Vol. m. 



