XOHTII AMKRICAN (OLKOl'rEHA. 2^7 



('. luteipcnniN n. sp. — Form moderately elongate, piceous ; elytra pale yel- 

 low : aiitcnnre piceous, and very nearly as long as the head and thorjix, joints 

 :i-10 gradually decreasing in length, the outer ones nearly square; head quadrate, 

 similar in the sexes; surface moderately shining, a rather broad median smooth 

 space; sides with coarse, not closely placed punctures; beneath more sparsely and 

 finely punctured than above; sub-mentum opaque; thorax as wide as the head, 

 longer tlian wide, narrowed behind ; sides distinctly sinuate, median smooth space 

 more convex, more elevated posteriorly, not defined by a row of punctures, lateral 

 region less coarsely punctured than the head; elytra longer and wider than the 

 tliorax. longer than wide conjointly; surface finely and moderately densely punc- 

 tured, finely pubescent; abdomen piceous, the apical segment sometimes paler, 

 punctuation finer but less dense than on the elytra, pubescence fine and brown : 

 beneath more shining, the apical segment and often the sides paler, punctuation a 

 little coarser but sparser than above; legs and coxse piceous. Length .22— .2S 

 inch ; 5.5 — 7 mm. 



Male. — Anterior tarsi rather widely dilated; last ventral segment with a small 

 broadly triangular notch with pellucid border. 



Female. — Anterior tarsi moderately dilated ; last ventral entire. 

 A pretty species, readily known by the pale yellow elytra. It Is re- 

 lated to lithocharlnus by its form, but diifers too plainly to require special 

 ♦•ouipari.son. 



Occurs on the Calitbrnia sea-coast. 



C bistriatus Erichs. — Piceous, elongate, legs and coxse rufo-testaceous; an- 

 tennpe piceous, nearly as long as the head and thorax, not stout, joints 5-10 as wide 

 as long; head quadrate, sub-opaque, a median smooth space widening in front and 

 including the entire clypeus ; sides coarsely not closely punctate ; beneath more 

 shining, coarsely punctate at the sides; sub-mentum opaque, black; thorax not 

 wider than the head, longer than wide, narrower posteriorly ; sides sinuate, median 

 smooth space sharply defined each side by a row of closely placed punctures: sides 

 less coarsely punctate than the head ; elytra wider and longer than the thorax, 

 longer than wide conjointly, rather finely and closely punctate, finely pubescent; 

 abdomen piceous, above and beneath more finely and closely punctate than the 

 elytra. Length .24— .HO inch ; 6.— 7.5 mm. 



JWa/e.— Anterior tarsi slightly dilated ; last ventral with a triangular emargina- 

 lioii, which has internally a pellucid border. 



Female. — Anterior tarsi slightly dilated; last ventral entire. 

 There is a very distinct line of larger punctures defining the median 

 smooth space, and between them and the normal lateral punctuation is 

 anothor narrow smooth space. A similar character is observed in siilci- 

 collis. 



Occurs on the Atlantic coast and on the margins of tide-water streams. 



C sulcicollis Lee. — Form elongate, depressed, color brown, head darker, 

 legs paler; antenu.ie brown, nearly as long as the head and tliorax, joints 4-10 not 

 longer than wide; head quadrate, dark brown, opaque, alutaeeous, a median and 

 frontal inipunctured space ; sides s]tarsely not coarsely punctate ; thorax not wider 

 than the head, longer than wide, narrower behind ; sides distinctly sinuate, median 

 smooth space more convex, indistinctly limited with fine punctures irregularly 



