LeConte.] 274 [January 28, 



much wider than the prothorax, finely scabrous-punctate; antennae, 

 palpi and thighs black; tibiae and tarsi piceous, ungues cleft; lower 

 part slender, nearly as long as the upper. Length 6.5 mm., .26 inch. 



White Mountains, Mr. Austin. The second joint is about two- 

 thirds the length of the third. This species resembles in appearance 

 T. angulatus and lineola, but is readily known by the head being yel- 

 low in front of the eyes. 



Dorcatoma pallicornis sp. nov. 



Oval convex, black, shining, uniformly finely punctulate, thinly 

 clothed with very short pruinose pubescence ; elytra with two yearly 

 entire striae at the sides, and an obsolete short stria behind the hu- 

 merus ; antenna?, testaceous, first joint black. Length 3 mm., .13 inch. 



One specimen; much larger than our two other species, with the 

 punctures uniform and finer, and the pubescence shorter. 



Grepidodera robusta sp. nov. 



Reddish brown, shining, oblong and convex, prothorax nearly 

 twice as long as wide. Sides narrowly margined, broadly rounded, 

 disc smooth, basal impressions deep and strong, transverse impres- 

 sion distinct ; elytra but little wider than the prothorax, strongly 

 punctured in rows; antennae rather stout, two-thirds as long as the 

 body; second and third joints equal. Length 23 mm., .09 inch. 



One specimen, White Mountains, Mr. Austin. Easily known by 

 the robust form, the prothorax being hardly narrower than the elytra. 



Scotoehroa &tra <sp. nov. 



Elongate, rather depressed, black, clothed with fine, short, pros- 

 trate pubescenee ; head and prothorax finely and densely punctured, 

 the latter one-half wider than long, narrowed in front, rounded on 

 the sides and apex; truncate feebly bisinuate and finely margined at 

 base, which is slightly flattened each side ; hind angles rectangular ; 

 elytra scarcely wider than prothorax, elongate, gradually rounded and 

 narrowed behind, finely less densely punctured; antennae at base, 

 and tarsi piceous. Length 5 mm., .2 inch. 



One specimen, White Mountains, Mr. Austin. An uncharacteris- 

 tic looking insect belonging to the Serropalpus group of Melandry- 

 idas, which, I regret to say, warrants on examination the founding of 

 a new genus, allied to Carebara and Spilotus, agreeing with them in 

 having the middle coxae not contiguous, the maxillary palpi with the 

 second and third joints not dilated, and the pubescence short, pros- 

 trate. It differs from the former by the smaller head, slender anten- 

 nae, and triangular, less securiform, last joint of the maxillary palpi. 



