Coleoj^terological Notices. 469 



small and rather broadly oval ; autennse very robust and compact, feebly in- 

 crassate toward apex, shorter than the head aud prothorax combined, third 

 joint not twice as long as wide and a little shorter than the next two, eleventh 

 not distinctly narrower than the tenth. Prothorax about one-third wider than 

 the head and one-third wider than long ; apex transversely truncate, a little 

 wider than the base, the latter rather distinctly arcuate, the lateral sinuations 

 obsolete ; basal angles obtuse but not at all rounded ; sides rather feebly 

 arcuate, straight toward base ; disk widest before the middle, finely, not very 

 densely punctate toward the middle, the punctures becoming larger, deeper 

 and very dense toward the sides. Elytra equal in width to the prothorax aud 

 more than twice as long, parallel ; sides feebly arcuate ; apex rather obtusely 

 rounded ; humeri dentiform ; disk with excessively feebly impressed strife of 

 very minute punctures which, except toward base, are scarcely larger than 

 those of the intervals, the latter sparse. Abdomen finely, feebly and sparsely 

 punctured. 



Male. — Without distinct sexual characters. 



Length 3.2-^.0 mm. ; width 1.1-1.3 mm. 



California (San Diego). 



This appears to be quite a local species, and I have not seen it 

 from any other locality than that indicated above. It is easilv 

 known bj its slender parallel form. 



In both parallelus and seriatus the sexual differences are almost 

 completely obsolete, the males, represented by certain slightly less 

 rol)U?t specimens, seem however to have the abdomen extremely 

 feeljly flattened in the middle toward base. The anterior tibiae and 

 tarsi are not modified in the male : thev are short and robust, the 

 latter very compact. 



C. seriatus Lee. — Ann. Lye. N. Y., V, p. 146. — Oblong, parallel, rather 

 strongly convex, subalutaceous, dark rufo-testaceous ; elytra black ; pubes- 

 cence wanting, replaced by excessively minute, sparse and rather robust, sub- 

 hyaline setse arising from the punctures. Head transverse, minutely and 

 somewhat densely punctate ; upper lobes of eyes very small, broadly oval ; 

 ante^nice robust, incrassate toward apex, a little shorter than the head aud 

 prothorax, third joint very short, clavate, about one-half longer than wide, 

 tenth strongly transverse, eleventh a little wider than long and distinctly 

 nan-ower than the tenth, joints throughout very compactly joined. Prothorax 

 about one-third wjder than the head and one-half wider than long ; apex 

 subtruncate, very slightly wider than the base which is slightly arcuate in 

 the middle, the lateral sinuatious just perceptible; basal angles very obtuse 

 and extremely narrowly rounded ; sides feebly arcuate, nearly straight toward 

 base ; disk widest slightly before the middle, finely punctate, the punctures 

 rather sparse toward the middle, dense but not quite contiguous laterally, 

 not muricate. Elytra equal in width to the prothorax and about two and one- 

 half times as long, obtusely rounded behind ; sides feebly arcuate ; disk with 



