AMERICAN COLEOPTERA. 223 



distant punctures. Body beneath as above, metasternum sparsely punctured 

 at the sides, abdomen finely and more densely punctate. Legs castaneous. 

 Length .2(5 '^— .30 J inch ; 6.6—7.5 mm. 



Male. — Hind margin of fifth ventral feebly arcuate, sixth short, broadly 

 emarginate, slightly narrower than the pygidium which is nearly semicircular, 

 and prolonged beyond the last ventral. (PI. I, fig. .S). 



Female. — Fifth ventral truncate, sixth sliort, rounded, margin reflexed, laSt 

 dorsal semicircular. 



Collected at Cape San Lucas, by Mr. John Xantus. 



This species resembles vsta and hrunnea, but is paler in color and 

 may be known by the structure of the antennae. The two lateral rows 

 of punctures end almost abruptly at middle. 



C U!$ta, Lee. — Form moderately robust, color pale brown, surface sparsely 

 pubescent. Head sparsely punctulate, eyes moderately prominent. Antennae 

 as long as half the body, joints two to three obconical, equal, together but little 

 longer tlian the fourth, four to ten nearly equal, eleven somewhat longer. 

 Thorax one-third longer than wide, base narrower than apex, feebly con- 

 , stricted in front of middle and rather strongly compressed at sides behind, no 

 ante-scutellar impression, disc very sparsely and finely punctulate. Scutellum 

 oval. Elytra twice as wide at base as thorax, humeri distinct, sides parallel, 

 apex conjointly rounded, disc feebly convex-, with striae of moderate punctures 

 becoming gradually smaller and extending to apical four- fifths where they 

 become entirely obliterated, lateral striae long; intervals broad, flat, with a 

 single row of minute punctures. Body beneath and legs colored &s above; 

 metasternum very sparsely punctured at the sides, abdomen more densely 

 punctulate. Length .38 inch ; 9.5 mm. 



Male — Unknown. 



Female. — Last ventral very short, broadly but very feebly emarginate, last 

 dorsal slightly longer and semicircular. (PI. I, fig. 4). 



One specimen collected by Berlandiere, in southwestern Texas, 

 resembles a small brunnea., but may be known by the antennal 

 structure. 



C. briinnea, Mels. — Dark brown, moderately shining, very sparsely pubes- 

 cent. Head densely punctured, eyes feebly prominent. Antennae very little 

 longer than the head and thorax, joint two equal to fourth, third slightly longer, 

 four to ten short, conical, nearly equal, eleventh longer than the two ( 9 ) or 

 four ( % ) preceding together. Thorax robust, scarcely a fourth longer than wide 

 and but little narrowed at base, very feebly constricted in front of middle, 

 rather strongly compressed at sides posteriorly, no ante-scutellar impression, 

 disc convex, very densely punctulate. Scutellum orbicular. Elytra nearly 

 twice as wide at base as thorax, humeri distinct, sides parallel, apices conjointly 

 rounded, disc moderately convex, with ten rows of coarse, quadrate, closely 

 placed punctures extending from base to apex, intervals slightly broader than 

 the striae, feebly convex and with a row of very minute punctures. Body 

 beneath and legs dark brown, abdomen paler, sides of metasternum coarsely 

 and densely punctured, abdomen finely and sparsely punctured. Length .30 — 

 .56 inch; 7.5 — 14 mm. 



