66 DESCRIPTIONS OF NEW SPECIES. 



bristles ; it is deeply emarginate ill front, considerably rounded 

 on the sides, and sinuous at the base ; the posterior angles are 

 obtuse and not rounded. The elytra are substriate with close 

 rows of coarse punctures, and are besides roughened with inter- 

 vening rugosities; the margin is finely serrate, and reddish; the 

 round spots of pale gray bristles are not visible in badly pre- 

 served specimens. 



DITOIWA III. 



248. D. laticollis. Nigro-picea opaca, oblonga subdepressa, pilis 

 pallidis parce hispida, capite thoraceque scabris, hoc latitudine breviore 

 antice paulo latiore, lateribus serratis ante medium rotundatis, fovea 

 oblonga media excavato costaque utrinque tenui undulata ornato, 

 elytris sutura costisque dorsalibus tribus elevatis, interstitiis biseriatim 

 punctatis, humeris maculaque magna postica obscure runs, antennis 

 tibiis tarsis abdomineque piceo-rufis. Long. *08. 



New York ; rare. 



EUDESMA Lec. 



. Corpus elongatum cylindricuui, elytris costatis. Antenna? 11-articulatae, 

 articulis duobus primis paulo crassioribus, 10 et 11 majoribus clavam 

 formantibus, intermediis- subequalibus. Sulci antennales obliqui, breves. 

 Oeuli parvi, subtransversi. Tibia? filiformes, baud spinosse, calcaribus 

 parvis armatse. Abdomen segmeutis ventralibus baud eniarginatis. 



This genus is founded upon Bitoma undulata Mels., a very 

 rare insect found in Pennsylvania. It is closely allied to Bitoma, 

 but differs by the base of the antennae being received in distinct 

 oblique grooves beneath the eyes. The ventral segments of the 

 abdomen are not emarginate, which is however also the case with 

 all the species of Ditoma known to me. 



249. Ell. undulata. Cylindrica elongata, atra opaca, confluentim 

 punctata, pilis cinereis adspersa, ore rufo-piceo, thorace quadrato pos- 

 tice paulo angustato-, lateribus rectis serratis, margine apicali et basali 

 sinuato, costis duabus brevibus anticis alterisque duabus discoidalibus 

 obtuse elevatis, elytris fasciis duabus undulatis cinereo-pilosis ornatis, 

 margine sutura costisque utrinque tribus elevatis, interstitiis punctis 

 quadratis biseriatim positis, antennis pedibusque obscure runs. Long. 

 •20. 



Bitoma undulata Mels. Proc. Ac. Nat. Sc. Phil. 2, 110. 



Pennsylvania, York County. For the type of this interesting 

 species I am indebted to Dr. Melsheimer. The portions of the 

 elytra clothed with cinereous hair are reddish in color. 



