NORTH AMERICAN COLEOPTERA. 47 



arcuate, rapidly narrowing posteriorly, apices slightly sinuate, the sutural angle 

 slightly prolonged; surface with distinct rows of moderately coarse punctures, 

 somewhat confused near the base, the interspaces with a single irregular series of 

 finer punctures. Prothorax beneath coarsely not closely punctured, the proster- 

 num more coarsely punctured than the flanks. Abdomen sparsely punctured. 

 Length .72-.9S inch; 18-24.5 mm. 



This species is the most slender in form in our fauna and the only one 

 in which the punctures of the elytra are arranged in rows. The lateral 

 margin of the thorax is entirely visible from above, a character otherwise 

 known only in ater. 



Occurs in California, at San Diego, Tejon and Santa Barbara. 



Ij. ater Cand. — Moderately elongate, black and shining, sparsely clothed 

 with short black pubescence. Antennse as in LeContei. Head feebly convex 

 very coarsely and closely punctate. Thorax longer than wide sides gradually nar- 

 rowing from base to apex, very slightly arcuate, margin visible from above hind 

 angles prolonged, strongly carinate, disc opaque, moderately convex, coarsely and 

 deeply punctured, the punctured less dense near the middle of the base. Elytra 

 not wider than the thorax, gradually and feebly arcuately narrowing to apex, the 

 tips rounded, sutural angle distinct but not prolonged, disc rather closely and 

 roughly punctured without trace of strial arrangement. Flanks of prothorax 

 rather densely coarsely j^unctured, the prosternum more coarsely, deeply and less 

 densely. Abdomen sparsely punctured. Length .72 -.96 inch ; 18-24 mm. 



This is also a large species, and resembles LeContei somewhat but is 

 less slender, with more coarsely punctured thorax and differently sculp- 

 tured elytra. 



Occurs at Santa Barbara, California. 



Li. pinguis n. sp. Form robust, black, shining, clothed with fine, black, silken 

 pubescence. Antennse serrate, not reaching the hind angles of the thorax in the 

 female (male?). Head densely punctate. Thorax wider than long, sides gradually 

 arcuately narrowing to the front, hind angles slightly divergent, strongly carinate 

 disc convex, densely, not coarsely punctate. Elytra slightly wider behind the 

 middle than the thorax, and about two and a half times as long, sides slightly ar- 

 cuate, apices conjointly rounded, sutural angle not prominent, surface obsoletely 

 sub-striate, densely punctate, the punctures finer than on the thorax, more shining 

 than tlie thorax. Body beneath densely punctate, the flanks of the prothorax 

 beneath more opaque and more coarsely punctured, the prosternum more coarsely 

 punctured and more shining. Length .83 inch; 21 mm. 



In our series of species the above bears the closest resemblance to 

 abruptvs from which it differs in its much more robust form and the 

 densely punctured thorax. The only other species with which it might 

 be confounded in description is ater which is more elongate in form and 

 with quite coarse punctuation of the thorax. 



Occurs near Portland, Oregon. 



