372 APPENDIX. 



Inhabits North-west Territory. 



Head yellowish-white below the antennae ; hypostoma 

 prominent, with a few rigid black hairs at tip ; antennae 

 black, basal joint whitish, with black hair ; front dull ful- 

 vous ; vertex black ; icings entirely brownish-black, with- 

 out spot ; feet pale rufous ; tarsi black ; tergum with black 

 hairs at the incisures, which on the side alternate with the 

 fulvous ones, but more distinctly so near the tip. 



Length from nine-twentieths to half an inch. 



This species belongs to Wiedemann's fifth tribe. 



3. A. fulvianus. Black, covered equally with pale yel- 

 lowish hair j wings hyaline, with a narrow, brown, costal 

 margin. 



Inhabits North-west Territory. 



Head with dull yellowish, short hairs, intermixed with 

 black ones on the front and hypostoma; thorax densely 

 hairy ; wings hyaline, interval between the two nervures 

 of the costal margin, and base to the first transverse ner- 

 vure, light brown ; feet black, sericeous, with yellowish- 

 fulvous hair, intermixed with black hairs ; tergum cover- 

 ed with dense hair, without any intermixture of black 

 hairs, and without any fasciated appearance ; venter each 

 side behind with hairs of a brighter fulvous tint than the 

 others. 



Length more than nine-twentieths of an inch. 



Allied to A. hottentota, Fabr. 



Belongs to the fifth tribe in Wiedemann's arrangement. 

 It is common on St. Peter's river, at Pembina, &c. It is 

 closely allied to alternata, nob. in the characters of the 

 wing, but there is no sign of fascia on the tergum, nor of 

 alternating black fascicles of hair on the sides. The colour 

 of the hair on the last segments of the venter is sometimes 

 ferruginous, but it is always of a deeper tint than that of 



