238 H. C. FALL. 



inwardly as usual ; strong and numerous on the elytra, a little finer in the 

 sutural region, especially toward the base. Metasternum very sparsely but 

 nearly evenly punctured from side to side. Eighth antennal joint broadly tri- 

 angular, a little longer than wide, the inner apical angle slightly obtuse and 

 somewhat rounded. Front tibiae with a single nearly median groove, middle 

 tibiae not grooved. Length 2.2-3.2 mm. 



Hab. — Texas (Laredo, May 27th, Hubbard and Schwarz) ; 

 Brownsville (Wickham, Dury and Barber). 



A single example from Arizona in the National Museum collec- 

 tion is referred here doubtfully. It is 2.5 mm. in length, red-brown, 

 with the' coarser punctures less strong than in typical specimens. 

 The more essential characters are, however, practically identical and 

 it is assumed for the present to represent only a geographical race. 



14. C. abbrei iutum Lee. — Dark piceous brown, varying to reddish, 

 rather stout, a little more than three-fifths as wide as long, distinctly narrowed 

 from the humeri and strongly gibbous in profile. Pubescence fine and sparse. 

 Finely punctulate, the intermixed coarser punctures practically absent on the 

 head, few and small near side margins of the pronotum, sparse and inconspicu- 

 ous on the elytra in the type, but larger and more numerous toward the elytral 

 apex in some specimens doubtless correctly associated. Metasternum with mod- 

 erate punctures very sparsely scattered laterally but more numerous at middle. 

 Eighth antennal joint a trifle longer than wide, subquadrate, the basal edge 

 oblique. Front tibiae with posterior groove well marked but abbreviated at 

 about the apical third. There are feeble traces of the anterior groove toward 

 the apex in the type, but these may either entirely disappear or become fairly 

 well developed. Middle tibiae not grooved. Length 2-2.4 mm. 



Hab. — Florida (Capron, type, Miami, Lake Worth, Key Largo). 

 Collections of Hubbard and Schwarz, and Beyer. 



The present species represents the extreme development of gib- 

 bosity in profile. It is also peculiar in the variability of the ante 

 rior tibial groove, usually so constant in character. The lateral 

 strise are shorter than usual, extending forward to a point opposite 

 the first visible ventral suture. 



C. seminulum Gorh. from Guatemala is closely allied, but has the 

 groove of front tibia? remote from hind margin, and the lateral 

 stria? of the elytra longer. 



15. C gibbnlum n. sp.— Dark brown, about three-fifths as wide as long, 

 distinctly narrowed and somewhat pointed behind, strongly gibbous in profile. 

 Pubescence yellowish gray, plentiful, obscuring to some extent the surface sculp- 

 ture. Surface rather less shining than usual, coarser punctures visible though 

 sparse toward the elytral apex, indistinct anteriorly and practically absent on 

 the head and pronotum, except at the extreme lateral margins of the latter. 



