574 TRANSACTIONS OF THE 



This has been supposed to be the same as the fuscipes Grav., 

 but it is much larger, with pale feet, &c. 



[The name being preoccupied was changed by Erichson to S. 

 Jiavicornis. — Lec] 



2. S. COLON. — Black; elytra with a rufous dot; feet pale be- 

 neath. 



Inhabits Indiana. 



Body black, with large, dense, not very profound punctures; 

 elytra with the punctures towards the suture longitudinally con- 

 fluent ; a sublunate or triangular, dull rufous spot rather behind 

 the middle of each clytrum ; tergum with the punctures not 

 smaller at the posterior margins of the segments ; feet dirty yel- 

 lowish ; thighs blackish above. 



Length over three-twentieths of an inch. 



Much like S. biguttatust Linn., but is much smaller, and the 

 spot of the elytra is placed rather more outward and backward, 

 and is more triangular and emargiuate before. 



3. S. STYGICUS. — Grayish black, immaculate. 

 Inhabits Missouri. 



Body black, with a slight tint of gray ; punctures dense, with 

 short, prostrate hairs; head obtusely indented each side between 

 the eyes ; [459] thorax broadest a little before the middle; ely- 

 tra, region of the scutel indented ; tergum of a more unmixed 

 black than the anterior part of the body ; feet immaculate. 



Length nearly three-twentieths of an inch. 



Resembles hupthalmus Sch., but may be distinguished by the 

 more obvious indentations of the head. 



4. S. FEMORATUS. — Grayish black ; thighs rufous. 

 Inhabits Pennsylvania. 



Body black with a slight tinge of gray ; punctures dense, with 

 short, prostrate hairs ; head obtusely indented each side between 

 the eyes ; thorax broadest rather before the middle, contracted 

 behind ; a slight appearance of indentation behind the middle ; 

 elytra, region of the scutel a little indented ; tergum of a more 

 unmixed black than the other part of the body ; anterior thighs 

 rufous, black at the knee ; posterior thighs obscure rufous. 



Length less than three-twentieths of an inch. 



[Vol. rv. 



