DESCRIPTIONS OF NEW SPECIES. 81 



lateribus rotundatis margine cretaceis, parce punotato, punctis duobus 

 cretaceis ornato, elytris guttis parvis cretaceis, utrinque 4 vel 5 ornatis, 

 sutura postice elevata apice prominula ; metasterno antice 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 in form. 



CREMASTOCHILUS KNOCH. 



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

 thorace piano varioloso, latitudine paulo breviore lateribus valde rotun- 

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

 tis, elytris thorace sesqui latioribus confertim punctatis, dorso planis 

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

 mibus. Long. '72. 



Arizona ; Dr. Irwin, U. S. A. This wonderful species has 

 the mentum very concave, punctured and acutely prominent be- 

 hind ; it belongs to the division Psilocnemis. but differs by the 

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

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

 males) are singularly formed- the fourth and fifth joints are 

 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. walslul. Elongata postice angustata, obscure senea nitida, 

 parce cinereo-pubescens, capite thoraceque fortiter hand dense punctatis, 

 hoc dorso ante medium foveis duabus profundis impresso, elytris punc- 

 tatis, postice et introrsum obsolete vix striatis, guttis utrinque 4 flavis 

 serie digestis ornatis. Long. -25. 



One specimen, Rock Island, Illinois ; collected by Mr. Benj. 

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

 interesting addition to our fauna. The first elytral spot is very 

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



