OF AMERICA NORTH OF MEXICO. 109 



One specimen ; Georgia. Very similar to the next, but the thorax is scarcely more 

 than twice as wide as long, and the base is strongly sinuate ; the joints of the antenna; 

 beneath are obliquely sinuate, and prominent interiorly. 



8. P. L^viGATUS. — Kufo-piceus, nitidus, thorace parce punctulato, valde transverse, basi paulo sinuato, 



dentibus prominulis, postico fere rectangular! ; elytris thorace latioribus, grossius punctatis, obsolete 



costatis. Long. 1-0 — 1-4. 

 Harris Trans. Nat. Hist. Soc. Hartford. 83. 



Mas, antennis corpora vix brevioribus, crassiusculis, imbricatis, articulis subtus vix obliquis. 

 Femina antennis corpore duplo brevioribus tenuibus versus apicem serratis. 



Northern and Middle States. The antennee of the male are less thickened at the 

 base than in the preceding species, but diminish gradually to the tip. 



9. P. BREVicoRNis. — Nigro-piceus nitidus, thorace trausverso, disco vix punctulato, dentibus prominulis, 



angulis anticis oblique truncatis, elytris thorace uon latioribus confertissime rugose punctatis. Long. 



1-1— 145. 

 Fabr. Syst. El. 2, 260. 



Mas, antennis crassiusculis, dimidio corporis longioribus, imbricatis, articulis subtus vix obliquis. 

 Femina, antennis tenuibus, corporis dimidio brevioribus versum apicem serratis. 



Middle States ; abundant. The posterior angle of the thorax is sometimes acute. 

 The thorax is comparatively larger than in any of the other native species. 



10. P. CURTicoRNis. — Piceus, nitidus, thorace valde transverse, basi late sinuato, disco Itevissimo, dente 

 antico rotundato, intermedio lato prominulo, postico obtuso, elytris thorace vix latioribus punctatis ; 

 oculis Talde transversis remotis. Long. 1"65. 



1 Priomis pocularis, Sch. Syn. 3, 148. 



Femina, antennis capite thoraceque vix longioribus, versus apicem serratis. 



Mas, latet. 



A very dilapidated specimen from Georgia. Seems very similar to P. Isevigatus, 

 but the anterior thoracic tooth is rounded; the eyes are more transverse, less 

 prominent, and more widely separated than in any of the others, not excepting 

 P. brevicornis. 



DEE.OBRACHUS Serv. 



Mesosternum simplex. 



Antennae 11-articulatce, baud imbricatae, articulo 3'° paulo longiore. 



Palpi elongati. 



Thorax brevissimus lateribus fortiter trispinosus. 



Tibiae compressae tenues. 



The body is depressed, and the elytra strongly margined in this genus ; the thorax 

 is comparatively very small. 



1. D. BREVicoLLis. — Rufo-piceus nitidus, thorace parce grosse punctato, basi late rotundato, spinis lateralibus 

 brevibus elytris parce punctatis obsolete costatis; palpis articulo ultimo valde dilatato. Long, l-l — 1-4. 



Serv. An. Ent. Fr. 1, 155. 



Mas, antennis crassiusculis, gradatim attenuatis, articulis 3'° basi, 4 — 11 totis confertim striatis. Femina, 



latet. 



28 



