BEMBIDIIN^E 185 



gent to the well developed foveae, situated as in sedula. Length 

 2.35-2.6 mm.; width 0.95-1.1 mm. Nevada (Reno), .profuga n. sp. 



17 Pronotum with three distinct medio-subbasal punctures 18 



Pronotum without three subbasal punctures 19 



18 Body very small, convex, not very stout, polished, black, piceous 

 when immature, the elytra generally indefinitely rufescent poste- 

 riorly; legs and under surface rufous; head three-fifths as wide as the 

 prothorax, the anterior strides distinct; eyes well developed, con- 

 vex; antennae piceous, pale basally, feebly incrassate distally, two- 

 thirds as long as the elytra; prothorax nearly one-half wider than 

 long, widest but little before the middle, the sides strongly rounded, 

 oblique and straighter basally, the angles minutely subprominent: 

 subbasal sulcus wholly impunctate, fine, interrupted medially, where 

 three punctures are usually distinct; foveae small, distant from the 

 angles; elytra two-fifths longer than wide and about two-fifths wider 

 than the prothorax, rapidly ogival in about posterior third; sutural 

 stria virtually attaining the base, the second stria abbreviated but 

 almost as distinct as the sutural; outside of this a third very fine 

 stria can sometimes be glimpsed ; foveae near two and four sevenths. 

 Length 1.65-2.0 mm.; width 0.7-0.8 mm. Rhode Island (Boston 

 Neck), Virginia (Norfolk) and North Carolina (Asheville). Abun- 

 dant. [Tachys mendax Lee.] xanthopus Dej. 



A Similar to xanthopus but stouter, the head and prothorax similar, 

 black, the latter relatively smaller in size; elytra broader, a third 

 longer than wide, almost one-half wider than the prothorax, uni- 

 form piceous-brown in color, the striation similar, except that 

 the second stria is shorter; under surface and legs rufous. Length 

 2.1 mm.; width 0.88 mm. Rhode Island (Boston Neck). One 



example laxipennis n. subsp. 



B Form much narrower and more parallel than in xanthopus, black, 

 the elytra uniformly piceous-brown; under surface piceous, the 

 legs subflavate; head and prothorax nearly as in xanthopus, the 

 elytra much narrower and more parallel, rather more than one- 

 half longer than wide, two-fifths wider than the prothorax; sides 

 parallel and feebly arcuate, the striation as in xanthopus. Length 

 1.6 mm.; width 0.6 mm. Rhode Island (Boston Neck). One 



specimen famelica n. subsp. 



Body larger and more elongate, with relatively larger prothorax than in 

 xanthopus, deep polished black throughout, the under surface and 

 legs rufous, the elytra not rufous posteriorly; head as in xanthopus; 

 antennae differing in being fuscous, with only the first or first two 

 joints flavate; prothorax only two-fifths wider than long, otherwise 

 as in the preceding, except that the sinus of the sides at the prom- 

 inent basal angles is more pronounced, and the three punctures are 

 still more conspicuous and rather more close-set; elytra much longer, 

 fully one-half longer than wide, only a third wider than the pro- 

 thorax, more gradually obtusely ogival behind; sutural stria deep 

 and fully and completely attaining the base, the second stria shorter 

 than in xanthopus and scarcely so marked; foveae similar. Length 

 2.0-2.25 mm.; width 0.78-1.0 mm. Rhode Island (Boston Neck), 



