DESCRIPTIONS OF NEW SPECIES. 81 



lateribus rotundatis margiue cretaceis, parce punctata, punctis dm 

 cretaceis ornato, elytris guttis parvia oretaceis, otrinqae 4 vel 5 ornatis, 

 sutura postice elevata apice prominula ; metasterno antioe producto ; 

 subtus lateribus punctatis, pedibusque fulvo-villosis. Long. -65. 



California, precise locality unknown; given me by Baron R. 

 Osten Sacken. The elytra are marked with rows of punctures, 

 and exhibit the usual feeble elevations coalescing into a posterior 

 prominence; the sides are transversely wrinkled, and the tip 

 sparsely punctured ; the suture is elevated behind and projects 

 at tip, forming a short spine. The pygidium is rugose and 

 clothed with fulvous hair. 



This species resembles at first sight E. pubera, but the color 

 is brighter green, and the clypeus is entirely different iu form. 



CREMASTOCHILUS K.noch. 



299. C. planatus. Elongatus, ater, fere opacus, capite punctate, 

 tborace piano varioloso, latitudine paulo breviore lateribus valde rotun- 

 datis, angulis anticis auriculatis, posticis productis nitidis sulco defini- 

 tis, elytris tborace sesqui latioribus eonfertim punctatis, dorso planis 

 lateribus et apice subito valde declivibus, tarsis elongatis, anticis diflbr- 

 mibus. Long. -72. 



Arizona ; Dr. Irwin, IT. S. A. This wonderful species ba- 

 the mentum very concave, punctured and acutely prominent be- 

 hind; it belongs to the division Psilocnemis but differs by tin' 

 more graceful form, and by the tarsi being rather longer than the 

 tibia?. The anterior tarsi of the two specimens before me (both 

 males) are singularly formed, the fourth and fifth joints arc 

 enlarged, and much compressed, but the claws are scarcely larger 

 than on the other feet. The pygidium is very coarsely punctured. 

 and obtusely carinate. 



PTOSIMA Sol. 



300. P. walslni. Elongata postioe angustata, obscure eenea nitida, 



parce cinereo-pubescens, capite tboraceque fortiter haud dense punctatis, 

 hoc dorso ante medium foveis duabus profun<li> impresso, elytris : 

 tatis, postice et introrsura obsolete vix stri.ttis, gnttifl otrinqae 1 flavis 

 serie digestis ornatis. Long. "25. 



One specimen, Rock Island, Illinois ; collected by Mr. i: 

 D. Walsh, to whom I feel great pleasure in dedicating this very 

 interesting addition to our fauna. The first elytra] spol is very 

 small, about one-fifth from the base; the 2d is elongate, com- 



