456 BULLETIN 18 2, UNITED STATES NATIONAL MUSEUM 



Diochus schaumi Kkaatz, 1860, p. 27.— Shaep, 1885, p. 467.— Casey, 1906, pp. 431, 



432, 433. 

 Diochus parvulus Kraatz, 1860, p. 27. 



Diochus longicornis Shakp, 1876, pp. 184, 185; 1887, p. 791. 

 Diochus vicinus Sharp, 1876, p. 185. 

 Diochus tarsalis Sharp, 1876, p. 185. 

 Diochus flavicans Sharp, 1876, p. 185. 

 Diochus inornatus Sharp, 1885, p. 406 

 Diochus vilis Sharp, 1885, p. 467. 

 Diochus maculicoUis Fauvel, 1891, p. 106. 

 Diochus hrevipennis Casey, 1906, pp. 431, 432. 

 Diochus thoracicus Casey, 1906, p. 432. 

 Diochus pallidiccps Casey, 1906, p. 432. 

 Rhcgmatocerus conicicollis Eichelbaum, 1009, p. 161. 

 Diochus perplcxus Cameron, 1922, p. 116. 

 Diochus apicipcnnis Cameron, 1922, p. 116. 



Diochus antcnnalis Cameron, 1922, p. 117.— Bernhauer, 1929, p. 193. 

 Diochus ptimilio Bebnhaxjer, 1929, p. 193. 



Description. — Piceous to rufopiceoiis, margins sometimes paler, 

 abdomen sometimes piceocastaneous. Head very small, one-sixth 

 longer than wide, sides arcuate behind eyes and evenly rounded into 

 base; clypeus a little produced between base of antennae but only 

 as a broad flat surface ; with a few scattered punctures except along 

 middle po.steriorly ; with very indefinite and indistinct ground sculp- 

 ture. Pronotum one-sixth wider than head, two-sevenths longer than 

 wide, oval, without trace of angles; with two discal pairs of punc- 

 tures behind middle, a discal pair more widely separated in anterior 

 half, and an irregular lateral series of three or four on each side; 

 without ground sculpture. Elytra three-sevenths wider than pro- 

 notum; not distinctly punctate except for two discal rows, one 

 sutural and one post-humeral, of four to seven submuricate punc- 

 tures; surface uneven, feebly radially grooved near scutellum. Ab- 

 domen densely and very finely punctate, with a few larger submu- 

 ricate punctures and rather indefinite ground Ecul])ture. Male., 

 seventh sternite feebly emarginate in median fourth, eighth with a 

 narrow rounded but very shallow emargination more distinct from 

 behind than from beneath. Female.^ seventh sternite not emarginate, 

 eighth broadly rounded. Length, 2i/2 to 3i/^ mm. 



Type locality. — "In variis Americae meridionalis regionibus, e Co- 

 lumbia . . ." Of schaumi., "Louisiana . . . Georgia"; of parvidus., 

 Bahia, (Brazil) ; of longicornis., Tapajos, Brazil; of vicinus., Tapajos, 

 Brazil; of tarsalis., Tapajos, Brazil; of -flavicans., Tapajos, Brazil; of 

 inornatus., "Nicaragua . . . , Panama . . . "; of vilis., "Guatemala, 

 near the city"; of 7nacvlicollis, "Caracas, Colonic Tovar," Venezuela; 

 of hrevipennis, St. Louis, Mo. ; of thoracic^is, Long Island, N. Y. ; of 

 pallidiceps, Austin, Tex.; of perplcxus., Mount Gay Estate, Grenada; 

 of apicipcnnis, St. "Vincent; of ante^nnal'is, Grenada ; of 'pumilio, Vera- 

 cruz, Mexico. 



