NATURAL SCIENCES OP PHILADELPHIA. 323 



BiEOCERA Er. 



1. B. cone o lor Er. Ins. Deutschl . 3, 4: Scaphidium concolor Fabr. Syst. 

 EL 2, 576. 



Unknown to me : described as being black, with piceous legs ; half the size 

 i ) f the European Scaphium immaculatum, which is \ inch long. 



2. B. apicalis, rotundato-ovalis,convexa, nigro-picea nitida laevissima, tho- 

 race basi media prolongato, rotundato submarginato, elytris stria suturali haud 

 punctata, basi longe arcuata, margine apicali testaceo, ano piceo, pedibus 

 rufo testaceis. Long. *06. 



Middle and Southern States. The side pieces of the mesosternum are dis- 

 tinctly divided by an oblique line. The insect exactly resembles a small 

 Scaphisoma, but is at once distinguished by the shorter antennae having only 

 three enlarged terminal joints. 



Scaphisoma Leach. 



1. S. castaneum, castaneo-piceum, ovale convexum nitidum, thorace 

 subtiliter parce, elytris fortius parce punctatis, stria suturali antice longe arcu- 

 ata, postice, ano pedibusque dilutioribus. Long. '13. 



Lee. Pac. R. R. Expl. and Surveys, xi. insects, 14. 



Scaphidium castaneum Motsch. Bull. Mosc. 1845, 2, 361, tab. 6, f. 4. 



San Jose, California. Larger and narrower than the next species, with the 

 thorax more distinctly punctured, and the antennas more thickened externally, 

 the 6th joint being not thicker than the 5th, and the 8th not narrower than the 

 adjoining ones. 



2. S. convexum, rotundato-ovale, convexum, piceo-nigrum, nitidum, 

 thorace subtiliter parce punctulato, elytris parce punctatis, stria suturali 

 antice longe arcuata, margine postico, ano antennis basi pedibusque testaceis. 

 Long. -11. 



Say, Journ. Acad. Nat. Sci. Philad. 5, 183. 

 Middle and Southern States, not rare. 



3. S. punctulatum, ovale, convexum, nigrum nitidum, thorace sub- 

 tilissime punctulato, elytris subtiliter punctatis, stria suturali longe arcuata, 

 ore, abdomine, antennis basi pedibusque rufo-testaceis. Long. *08. 



One specimen, Georgia. Narrower and smaller than S. convexum, with 

 the fine punctures of the thorax more numerous, and the elytra entirely black 

 and more finely punctured. 



4. S. suturale, ovale, convexum, piceo-nigrum nitidum, thorace subtilissi- 

 me parce punctulato, elytris parce fortius punctatis, stria suturali profunda 

 arcuata, postice, ano antennis basi pedibusque testaceis. Long. # 08. 



Middle and Southern States, smaller and narrower than S. convexum, 

 with the sutural stria deeper. 



5. S. terminatum, rotundato-ovale, convexum, piceo-nigrum nitidum, 

 elytris parce subtiliter punctulatis, stria suturali arcuata, margine apicali flavo, 

 ano testaceo, antennis pedibusque flavis. Long. "06. 



Melsheimer, Proc. Acad. Nat. Sci. 2, 104. 

 Middle States, not rare. 



6. S. rufulum, ovale, convexum, rufo-castaneum nitidum, elytris sub- 

 tilissime parce punctulatis, stria suturali subtili arcuata, apice ano antennis 

 pedibusque dilutoribus. Long. -06. 



One specimen found at the junction of the Colorado and Gila, California. 



7. S. pusillum, rotundato-ovale, convexum, nigro-piceum nitidum, ely- 

 tris obsolete parce punctulatis, stria suturali profunda arcuata," postice tes- 

 taceis, abdomine antennis pedibusque rufo-testaceis. Long. - 03. 



I860.] 



