104 DESCRIPTIONS OF NEW SPECIES. 



California, Illinois, and Texas. Differs from the other species 

 in my collection by the punctures of the thorax being very distinct, 

 not confluent, and not fine. The abdomen is rufo-piceous. The 

 sides of the thorax are more finely serrate than in L. striatus. The 

 front coxae are more widely separated than in the two preceding 

 species. 



TROGOXYLOSf Lec. 



363. T. punctatlim. Cylindricum convexum, nigro-piceurn, opac- 

 um, setis erectis brevissimis fulvis vestitum, capite fortiter punctato 

 antice impresso, thorace latitudine fere breviore, postice subaDgustato, 

 lateribus fere rectis, angulis anticis et posticis baud rotundatis, disco 

 confertim punctato subcanaliculato ; elytris fortiter dense punctatis, 

 lineis utrinque tribus elevatis vix conspicuis ; subtus nitidum, prosterno 

 parce punctato, coxis anticis modice distantibus pedibus obscure fer- 

 rugineis. Long. *14. 



One specimen, collected at Cape San Lucas, Lower California, 

 by Mr. John Xantus. Very different from X. parallelipipedum 

 by the convex and strongly punctured upper surface. The genus 

 Trogoxylon differs from Lyctus by the front tibiae being truncate 

 at tip, the anterior angles of the thorax not rounded, and the 

 elytra irregularly punctate, without rows of hairs. In Lyctus 

 the external apical angle of the front tibiae is produced, the 

 anterior angles of the thorax are rounded, and the elytra are 

 more or less punctured in rows, with well defined lines of hairs. 



SPHIHTDUS Chevr. 



364. S. americanus. Oblongus convexus, nigro-piceus, fusco-pu- 

 bescens, thorace transverso, lateribus valde rotundatis crenulatis, disco 

 punctato ; elytris punctulatis, striis punctatis, baud impressis postice 

 obliteratis, hurneris rufo piceis ; antennis pedibusque testaceis. Long. 

 •08— -10. 



Atlantic States, not rare, in woody fungi. I have had no 

 opportunity to compare with the European S. dubius ; but, judg- 

 ing by the figures and descriptions at my disposal, it differs from 

 that species by the fainter rows of punctures on the elytra. The 

 elytra are sometimes of a uniform brown color. 



TRIPHALUS Lec. 



365. T. perforatlis. Piceus subopacus, capite dense fortiter punc- 

 tato, fronte parum convexa, thorace capite vix latiore, quadrato, antror- 



