KEVISION OF ELEODIINI BLAISDELL. 195 



ohscura, sidcipennis, and arata,' which makes the series complete as 

 far as known. 



The mentinn is more or less distinctly trapezoidal, rather large; 

 apex truncate, feebly emarginate or slightly arcuate; surface coarsely 

 punctate, foveas more or less obsolete, and rather densely setose ; seta? 

 black, moderate in length and directed forwards. 



The prosternum is slightl}^ convex between the coxa?, compressed 

 and usually vertically truncate posteriorly, the inferior angle sub- 

 mucronate or rounded, sometimes oblique, or more rarely evenly 

 rounded antero-posteriorly. 



Mesosternum variable as in dlspersa and ohscura. 



The tibial, femoral, tarsal, abdominal, and sternal characters are 

 practically the same as for the other races, but dispcrsa appears to 

 have the most pronounced form of sculpturing, not including the 

 elytral sulci. 



ELEODES ACUTA Say. 



Blaps acuta Say, Joiirn. Acad. Nat. Sci. Pliila., Ill, 1823, p. 258; Aruer. 



Entomology, I, 1824, p. 31, pi. i, fig. 1. — LeConte, Complete Writings 



of Thomas Say, I, 1859, p. 31. 

 Eleodes acuta liECoNTE, Proc. Acad. Nat. Sci. Phila., 1858, p. 181. — Hokn, 



Trans. Amer. Phil. Soc, XIV, 1870, p. 306. 



Black, elongate oblong, depressed dorsally, usually more or less 

 reddish along the suture. 



Head nearly twice as wide as long, and a little less than one-half 

 as wide as the pronotum at middle, feebly convex and more or less 

 transversely impressed along the frontal suture, rather opaque, mod- 

 erately coarsely, irregularly, and densely punctate. Antennae quite 

 stout, not reaching to the prothoracic base, outer four joints scarcely 

 dilated or compressed, the third about equal to the next two com- 

 bined, fourth slightly longer than the fifth, the latter to the seventh 

 inclusive, very slightly decreasing in length in the order named, the 

 seventh just a little shorter than the fourth, eighth subtriangular and 

 scarcely as wide as long, ninth and tenth subglobular, eleventh short 

 ovate. 



Pronotum usually widest at the middle and about three-eighths 

 wider than long; diHC more or less glabrous and shining, finely and 

 sparsely punctate, laterally more or less impressed along the margin ; 

 impressed area opaque, irregularly or transversely rugulose and 

 finely granulate; apex moderately emarginate and finely margined; 

 ude8 broadly and evenly arcuate to near the base, then more or less 

 sinuate and more coarsely margined, margin narrowly reflexed ; hase 

 truncate to feeljly arcuate, feebly and broadly sinuate at middle, 

 coarsely margined, and about one-third wider than the apex; apical 

 angles obtuse; basal angles more or less rectangular. 



