COLEOPTERA. Til 



in any manner with the median puncture. Elytra at base very slightly 

 wider than the pronotum ; sides rather strongly divergent posteriorly and 

 strongly arcuate ; disk broadly convex, minutely and rather closely punc- 

 tulo-asperate, shining, about as long as wide ; sutural striae fine, rather 

 close, feebly arcuate, lateral deeply and narrowly impressed, one-third as 

 long as the elytra. Abdomen very slightly shorter and narrower than the 

 elytra ; sides parallel and straight ; border narrow and inclined ; surface 

 broadly and rather strongly convex, polished, finely and rather sparsely 

 punctulo-asperate ; first three dorsal segments equal ; first with two distant 

 very widely divergent short and distinct basal carinae ; second without 

 visible carinae. Legs long ; femora rather robust ; tibiae slender. Pro- 

 sternum very short. Length 1.1 mm. 



Trenton Falls, New York, 3. 



Described from the male. In the female the eyes are fully de- 

 veloped and the legs are all slender throughout. In the male the 

 middle femora are swollen much more than the anterior and posterior ; 

 they are flattened and somewhat lunate, having on the inner narrow 

 edge a very small oblique spine. The corresponding tibiae are very 

 strongly tootlied interioi-ly, the tooth fitting, wlien the leg is closed, 

 into a concavity in tlie femur. The remaining femora and tibiae are 

 unarmed. The tendency to enlargement of the middle femur alone, 

 is also to be seen in a rudimentary stage in several males of P^uplectus. 



IVICOTHEIJS n. gen. 



The eyes in the males of this genus are rather well developed, but 

 in the females they are very rudimentary ; the genus offers many 

 differences besides those indicated in the table, which are given in 

 tlie following description of the single species. 



1. W. ti1>ialis n. sp. — Form moderately robust, somewhat depressed. 

 Pubescence rather short, coarse, dense and conspicuous, pale fulvo-cinere- 

 ous ; color throughout pale rufo-testaceous, legs just visibly paler. Head 

 moderate in size, nearly as long as wide; eyes small, very convex and ex- 

 tremely coarsely granulate ; genae strongly convergent, feebly arcuate, 

 slightly longer than the eye ; interocular surface moderately elevated above 

 the eyes, very feebly convex above, shining, impunctate, having at nearly 

 two-fifths the length from the base two round somewhat feebly impressed 

 spongy-pubescent foveae, mutually two-thirds more distant than either from 

 the eye, connected by an anterior feebly impressed acutely parabolic channel 

 about as long as their distance asunder ; intermediate surface rather strongly 

 convex ; supra-antennal tubercnlations large, angulate externally, having 

 just behind their apical limits a small flat area which i^ strongly and con- 

 fluently punctate, connected by the transverse frontal ridge which almost 

 disappears in the middle, and which is much less than one-half as long as 

 the width across the eyes ; labrum very transverse, truncate anteriorly ; 



