192 ACADEMY OP NATURAL SCIENCES 



slightly reflected : scutel acute : elytra destitute of any promi- 

 nent line ; punctured j punctures enclosed by minute, irregular, 

 indented lines : pectus, punctures very minute : venter, posterior 

 margins of the segments highly polished. 



Length one inch and three-tenths. 



Appears to be a rare insect. I found but one specimen on the 

 Arkansa river near the mountains. [411] The elytra to the 

 eye have a smooth appearance, and, with the body, are totally 

 black. 



[I described this species as a new genus Smileceras, but after- 

 wards recognized the identity of the genus with Stenaspis. — Leg.] 



CALLIDIUM Fabr. 



1. C. DiscoiDEUM. — Rufous; head, postpectus, feet, and 

 dilated sutural mark, black. 



Inhabits Mississipi. 



Body bright rufous, punctured : head black, confluently punc- 

 tured ; an elevated line between the antennse : antennae tinged 

 with brownish, rather shorter than the body : thorax convex, 

 rounded; punctures profound, equally disseminated; hairs erect: 

 scutel small, black : elytra with approximate, regular punctures, 

 and very short, obsolete hair ; a large, sutural, black, common 

 mark, occupying more than half the superficies ; it is contracted 

 near the base, and still more dilated at tip ; tip rounded, entire : 

 postpectus and feet black. 



Length less than half an inch. 



[Allied to Eriphus. — Lec] 



2. C. SUTURALE. — Rufo-sanguineous, hairy; antennae, suture, 

 pestpectus and feet, black. 



Inhabits Mississippi. 



Body bright rufo-sanguineous, hairy, punctured : antennae 

 rather shorter than the body, and with the orbits black : thorax 

 convex, with long black hairs; punctures sparse, obsolete on the 

 disk : scutel small, black : elytra with long black hairs, which 

 are erect at base, and prostrate at tip of the elytra ; punctures 

 rather distant, furnishing [412] hairs; suture with a black 

 common line ; tip rounded, entire : postpectus black : anterior 

 and intermediate thio;hs black in the middle. 



Length seven-twentieths of an inch. 



[Vol. IIL 



