AMERICAN COLEOPTKKA. 237 



nia. This species is apterous, the metasternum shorter than usual, 

 but less so than in punctulatum, being about one third longer than 

 the second ventral segment. 



11. C. simplex n. sp. — Dark brown, form rather robust, less than twice as 

 long as wide and quite strongly convex, scarcely visibly narrowed posteriorly, 

 not gibbous in profile. Pubescence fine, feebly condensed in longitudinal vittse 

 on the elytra in well preserved specimens. Coarser punctures scarcely evi- 

 dent on the head, moderately developed at the sides of the pronotum, and rather 

 strongly so on the elytra, especially toward the apex, where they are much 

 coarser than on the pronotum. Metastemum sparsely, finely, nearly evenly 

 punctate throughout. Hind coxal plates punctate. Front tibia? rather strongly 

 dilated apically, posterior groove faintly indicated, anterior groove lacking. 

 Middle tibire not grooved. Length 2.5-3.2 mm. 



Hub. — Florida (Punta Gorda, Key West, Biscayne — Hubbard 

 and Schwarz. collection). 



The eighth antennal joint (first joint of club) is just visibly 

 longer than wide, subquadrate, obliquely narrowed internally at 

 base, the inner apical angle right. Lateral strise of elytra sharply 

 impressed, ending abruptly opposite the base of the first visible 

 ventral segment, and not continued to base by shallow grooves or 

 rows of larger punctures. 



12. C inetasteruale n. sp. — Dark brown, not robust, almost exactly twice 

 as long as wide, scarcely visibly narrowed posteriorly, distinctly gibbous in pro- 

 file. Pubescence fine and sparse. Punctuation of head obviously dual, the 

 coarser punctures, however, are fine, numerous and evenly distributed. Prono- 

 tum coarsely closely punctured at sides; coarser punctures of elytra rather fine 

 and sparse throughout, distinctly finer than those at the sides of the pronotum, 

 except near the side margin anteriorly. Metasternum strongly longitudinally 

 carinated at middle, sparsely finely punctate, the punctures very fine and widely 

 spaced laterally, but evidently extending to the sides. Hind coxal plates punc- 

 tate. Front tibise with a single groove rather widely distant from the posterior 

 margin ; middle tibiae not grooved. Length 2.7 mm. 



Hub. — Santa Rosa, Lower California. 



Aside from the difference in tibial grooves, metastemale may be 

 separated from the other species with carinate metasternum — pune- 

 latum and carinatum — by its plainly gibbous profile. It inhabits a 

 completely distinct faunal region. 



13. C inrequale n. sp.— Dark piceous brown, a little less than twice as 

 long as wide, slightly narrowed posteriorly, rather strongly gibbous in profile. 

 Pubescence fine and short. Intermixed coarser punctures conspicuous through- 

 out, being numerous and quite evenly disposed on the head, coarse and close at 

 the sides of the pronotum, end extending well into the disk, becoming smaller 



TRANS. AM. ENT. SOC. XXXI. JULY, 1905. 



