H. F. WICKHAM. 167 



ble that the separation of the species will be a matter of only mod- 

 erate difficulty Reference should, however, be had to the descrip- 

 tions as well as to the table, which follows: 



-•1. Elytral pubescence, in a short post-scutellar space, directed sharply away 

 from tlie suture. Apical truucature strong. 



brevipennis Csy. 

 AA. Elytral pubescence directed backwards over the entire disk. 

 b. Elytra more or less flavate or rufescent. 



c. Elytra connate along the suture, not dehiscent at apex- . ■nubifer Csy. 

 cc. Elytra not connate, dehiscent apically. 



d. Elytra (in the male) covering the eutire abdomen, not in the least 

 truncate. Sides of piotliorax strongly shining beneath. 



virginalis n. sp. 

 (Id. Elytra more or less truncate, exposing at least the tip of abdomen. 



e. Head and prothorax black or nearly so iiiormon n. sp. 



ee. Head and prothorax rufou.s or testaceous. 



/. Elytra normally blackish, pale only at base; a small subapical spot 



sometimes present on each inyo n. sp. 



ff. Elytra in greater part pale, often with blackish postmediau baud. 

 g. Elytra distinctly though not very strongly shining ; the blackish 



fascia simply transverse salicola Lee. 



gg. Elytra densely opaque, apparently thicker ; blackish fascia ex- 

 tending along the sides to apex deiisus Csy. 



ggg. Elytra without postmedian blackish fascia. .int'erualis n. sp. 

 66. Elytra and entire body black alntaceus Lee. 



T. brevipennis Casey. — Narrow, subparallel, depressed, not shining, pale 

 rufotestaceous, under side of abdomen piceous, exposed dorsum blackish, elytra 

 blackish, with the apex and about basal third pale. Pubescence distinct, pale, 

 flaring away from the suture in the postscutellar region. Head quadrate, basal 

 impression obsolete, tempora subparallel, long, arcuate, slightly more prominent 

 than the small eyes; disk reticulate, punctures large and shallow. Prothorax 

 narrower than the head, reticulate and with shallow punctures; widest near the 

 apex, where it is strongly rounded, sides thence oblique and feebly arcuate, 

 slightly sinuate to the basal margin. Elytra short, wider behind the middle and 

 at apex than at base, sides feebly arcuate, disk flattened, minutely densely punc- 

 tured in the female. Legs rather short and somewhat stout, the tarsi short and 

 very slender. Length 3 mm. 



In general, the above brief description follows that of Major 

 Casey, which may be consulted for further detail. He described the 

 species from a female, given him by Mr. Roberts and originally col- 

 lected by myself at Holbrook, Arizona. In my collection is a pre- 

 cisely similar female from the same place, and I have placed another 

 in the collection of the National Museum. A male from Winslow, 

 Arizona, in my collection, is associated with this species, but differs 



TBANS. AM. ENT. SOC. XXXII. JUNE, 1906. 



