OF NATURAL HISTORY. 785 



ayelWoval spot at base and a slender obsolete one near the 

 tip : maxilla with an obsolete yellowish spot before the palpi: 

 palpi with a few rigid hairs ; terminal joint one-third the length 

 of the preceding joint : tongue ferruginous : vertex in the middle, 

 having a few yellow hairs : thorax with dense, long, yellow hair : 

 wing-scale blackish: wings with a slight dusky tint; nervures 

 black, exterior recurrent nervure entering the outer cubital 

 cellule directly opposite to the outer nervure of the cellule : ter- 

 gum hairy ; hairs black, rather long ; a few yellow hairs towards 

 the middle of the first segment : anterior feet with yellow hair on 

 the posterior edge : hind feet, hairs not much elongated. 

 Length half an inch. 



Sent to me by Mr. Barabino. Difi'ers from the ahrupta nob., in 

 being less robust, the hair of the thorax being pale yellow, and 

 the mandibles having a white spot near their tips. 



3. A. TAUREA. — Thorax pale, with a dusky central spot, from 

 which proceed two lines to the anterior angles. 

 Inhabits Indiana. 



Body black with whitish cinereous hair : head, hair on the 

 vertex dusky : thorax with whitish hair ; a large, obvious, cen- 

 tral, dusky spot, with a line curving from it to each anterior 

 angle of the thorax : scutel, hair dusky : metathorax and first 

 segment of the tergum, with cinereous hair; remaining segments 

 of the tergum with the hair very short and black, excepting on 

 the posterior margins which are pure white : 9 ultimate segment 

 with [411] a glabrous, subcarinate, triangular, oblong space 

 above : wings hyaline ; nervures fuscous ; stigma not suddenly 

 dilated : terminal third of the radial cellule slightly separated 

 from the edge of the wing; terminal nervure of the third 

 cubital cellule inserted at the middle of the nervure of the radial 

 cellule. 



Length J about two-fifths ; 9 half of an inch. 

 The thoracic spot will readily distinguish this species. The 

 manners and habits of the species may be likened to those of the 

 A. parietina Latr. It digs a cylindrical hole in compact clay or 

 adhesive earth on the side of a bank, or in earth retained amongst 

 the roots of an overturned tree. The hole is two or three inches 

 in depth. The sides and bottom are of a dark brown color, quit* 

 1837.] 50 



