AMERICAN PHILOSOPHICAL SOCIETY. 541 



ceous to the fiftL joint, which with the others are dull rufous ; 

 first joint hardly as long as the third ; labrum a little prominent, 

 piceous, widely but not deeply emarginated before ; palpi dull 

 rufous, not very widely truncated at tip ; labial not securiform ; 

 mandibles prominent, very acute ; thorax as long as broad, not 

 remarkably convex ; impunctured ; dorsal line distinct, not ex- 

 tending to the base, which is a little depressed ; lateral margin 

 depressed and reflected, narrow, wider near the posterior angles, 

 which are somewhat acute ; lateral edge excurved near the pos- 

 terior angle; basal lines distinctly indented and dilated ; base 

 considerably wider than the peduncle ; elytra somewhat de- 

 pressed, ovate-oval ; surface composed of very minute granules ; 

 striae slender, deeply impressed, impunctured ; third interstitial 

 space with three nearly [428] equidistant punctures, the termi- 

 nal one much the largest, with minute elevated centres ; tip very 

 obtusely sinuous ; tarsi dull rufous. 



Length less than two-fifths of an inch. 



Taken by William Bennett, during his stay in Mexico with 

 Mr. Maclure. 



It will be obvious from this description, that our species does 

 not well correspond with the S. pumicatus, Panz., but agreeably 

 to the tables given by Dejean it cannot be placed elsewhere. It 

 is larger and more dilated than pumicatus, the basal joint of the 

 antennae is shorter, the palpi are not so obtusely truncated, and 

 its habit and appearance quite diflFerent. 



PELOR Bonelli. 



P. AVIDUS Say, (Zabrus) Journ. Acad. Nat. Sc. [Ante, 95.] 

 AMARA Bonelli. 



In my paper on the Carabici audi Hi/drocantliari, published in 

 the Trans. Amer. Philos. Soc. vol. 2, new series, as above quoted, 

 I described five species of the United States, under the genus 

 Feronia, agreeably to the arrangement of Latreille, indicating, 

 however, at the same time, that they belonged to Bonelli's Amara. 

 But Dejean and many other distinguished entomologists give the 

 group a separate station. 



1. A. MuscuLis Say, (Feronia) Trans. Amer. Philos. Soc— 

 Dej. Sp. Gen. 3, 477. 

 1834.] 



