252 . MEMOIRS ON THE COLEOPTERA 



head relatively larger, with still more converging and only feebly arcuate 

 tempora, finely, extremely densely punctate; antennae (9 ) longer, being 

 three-fourths as long as the body; prothorax as in circumdata, campanu- 

 late and very convex but with still more strongly everted basal angles 

 and with the very dense punctures scarcely more than half as large, the 

 short inconspicuous and dusky vestiture similar; elytra two-fifths wider 

 than the prothorax, three-fourths longer than wide, the sides only very 

 feebly converging from the base, pale yellow-brown, the apices and a 

 small humeral spot black; punctures strong but less coarse or dense than 

 in circumdata; abdomen less strongly and still somewhat more densely 

 punctate. Length (9) 7-5 mm.; width 2.7 mm. Colorado. Levette 

 collection. 



This species is closely allied to circumdata; it is, however, very 

 different in general appearance from any of a good series of that 

 species taken in Massachusetts, that I owe to the kindness of Mr. 

 C. A. Frost, and also one from Pennsylvania, due to its much 

 broader outline, as well as other differences alluded to in the 

 description. 



Brachyleptura boulderensis n. sp. Female nearly as in the female of 

 lacustris but with the tempora not slightly converging behind and much 

 less prominent than the eyes, as they are in that species, but pro- 

 tuberant, strongly rounded and more prominent than the eyes, the 

 parallel-sided frontal prolongation equally pronounced but not so broad; 

 body, coloration throughout, sculpture and pubescence as in lacustris, 

 black with dark yellowish-red elytra, the head and prothorax not coarsely, 

 extremely densely punctate; elytra two-fifths wider than the prothorax, 

 rather more than twice as long as wide, coarsely, rather closely punctate, 

 much more finely apically, the apices truncate; abdomen finely, evenly, 

 not densely punctulate and with short inconspicuous pubescence. 

 Length (9 ) 9.0 mm.; width 2.7 mm. Colorado (Boulder Co.). 



Besides the differences above noted, this species differs radically 

 from lacustris in the sparser and more evenly distributed abdominal 

 punctulation and relatively narrower and more cuneiform elytra, 

 the external outline of which is less rounding behind to the apical 

 truncature. 



The species allied to vagans Oliv., are rather numerous; they are 

 of peculiar facies, being very short and rather stout in build, with 

 the elytra short, more or less rapidly narrowed from base to apex, 

 strongly dehiscent apically and always very strongly punctured. 

 The individual species are rather variable in elytral coloration; 

 those in my cabinet may be denned as follows: 



Outer antennal joints those beyond the fifth testaceous only at base .2 

 Outer joints testaceous in basal half or but little less 7 



