DESCRIPTIONS OF NEW SPECIES. 83 



nato, elytris nigro-cyaneis baud dense, antice subseriatim punctatis. 



Long. *12. 



Georgia ; rare. More convex than D. geminatus. This spe- 

 cies approaches the Mexican D. nigriceps Boiiv., but does not 

 agree with the description sufficiently to permit me to consider it 

 the same. 



ALAUS- ESCH. 



304. A. melanops. Niger fere opacus, punctis albo-pilosis consper- 

 sus, tborace latitudine longiore, canaliculate, lateribus rotundatis, postice 

 paulo angulato, confertini punctate, maculis duabus solitis nigro-veluti- 

 nis fere rotundatis, elytris confertim puuctatis subtiliter striatis. Long. 

 1-12. 



California and Oregon ; Mr. Ulke. The thoracic spots are 

 shaped as in A. gorgops, from which as from all our other species 

 it differs by the less shining surface, and coarser pubescence ; the 

 latter is distributed in very minute scattered dots. 



HOUISTONOTUS CAND. 



305. II. simplex. Niger nitidus, pube helva subtili vestitus, pilis 

 longioribus intermixtis, tborace latitudine baud breviore ante medium 

 angustato, et lateribus rotundato, subtilissime punctulato, et remote sub- 

 tiliter punctate, elyfrris striis fortiter punctatis, interstitiis plants subtilis- 

 sime punctulatis et uniseriatim punctulatis, antennis pedibusque rufis. 

 Long. -30 -35. 



Cape San Lucas ; Mr. Xantus. The head and anterior angles 

 of the thorax are sometimes reddish. The claws, as in our other 

 species, are strongly dilated at base into a tooth. 



306. H. deiisus. Niger subopacus, cinereo-pubescens, thorace latitu- 

 dine vix longiore antrorsum vix angustiore, lateribus rotuudatis, convexo 

 dense subtiliter punctato, elytris striis profunde punctatis interstitiis 

 rugosis et punctulatis, antennis pedibusque rufo-testaceis. Long. -25. 



One specimen, Cape San Lucas ; Mr. Xantus. 



CRYPTOHYPNUS ESCH. 



307. C. grandicollis. Elongatus, supra nigro-piceus nitidus, seneo- 

 tinctus, subtilissime pubescens, capite fortiter punctato, antice rufescente, 

 thorace latitudine longiore convexo, lateribus fere parallelis antice ro- 

 tundatis, disco postice canaliculate, parce lateribus et antice fortiter 

 postice subtiliter punctato, angulis posticis divaricatis fortiter carinatig 

 rufescentibus, elytris striis profundis leviter punctatis, interstitiis parce 



