AND EASTERN NEW MEXICO. 



19 



DEROBRACH1J8 Serville. 

 D. geiuiliatlljii, piceus, nitidus, thorace valde transverso, antice uoq angustato, parce pimctulato, 



lateribus quadrispinoso, spina antica miuore, elytris fere tevigatis, margiiie angustiore reflcxo' 



Long. 2-9. Tab. II, fig. 12 (femina). 

 Mas minor (long. 1-5-2-25), antennis longioribus crassioribus (fig. 12 a), pedibus anticis puuctis 



elevatis exasperatis. 

 Leg. Proc. Acad. Nat. So. YI, 223. 



New Mexico and Texas. The only female yet obtained was collected at Albu- 

 querque, by Dr. T. C. Henry ; several males were afterwards found by Messrs. 

 Schott and Clark, of the Boundary Commission, at various places in Texas. 



PRIOIVUS Geoffroy. 



P. ClirTatllS, piceus, tliorace subtiliter parce punctulato, spina anteriore tenui valde acuta, media 

 hamata, angulis posticis subrectis prominulis, elytris subtiliter parce punctulatis et rugosis, spina 

 suturali distincta; oculis magnis, antennis 12-articulatis. Long. 2-06. 



One female from near Santa Fe. Resembles nearly P. cali/ornicus Motsch. 



{crassicornis Lee), but the anterior sj^ine of the thorax is more slender, and the 



middle one is curved backwards; the elytra are somewhat less punctured and 



rugose, but this is not a good character, as judging from a large series of P. cali- 



fornicus, it seems subject to variation. 



P. fi!>>!iiicoi*ni!!i, nigro-piceus, nitidus, thorace subtiliter parce punctate, lateribus obtuse tridentato, 

 elytris thorace latioribus parce sat grosse punctatis, obsolete costatis. Long. 1-0 — 1-6. Tab. I, 

 fig. 14 (mas). 



Mas antennis erassissimis valde imbricatis 27 — 30-articulatis, articutis subtus valde incisis (o). 



Femina antennis tenuibus imbricatis, 2,5-articulatis, articulis subtus sinuatis (6). 

 Haideman, Proc. Acad. Nat. Sc. Ill, 12.5; Leo. Journ. Acad. Nat. Sc. 2d ser. II, 108. 



Platte river. New Mexico, and Texas, not rare. 



P. eiliarg'iliatlliii, piceus, nitidus, thorace punctatissimo, flavo-piloso, antrorsura angustato, 

 lateribus ante medium uuispinoso, angulis posticis rectis, elytris grosse parcius punctatis ; antennis 

 14-articulatis. Long. -75. Tab. II, fig. 13 (mas). 



Mas antennis crassis valde imbricatis, articulis 3 — 1 3 ad apicem subtus valde emarginatis. Femina latet. 



Say, Journ. Acad. Nat. Sc. Ill, 327 ; Leg. ibid. 2nd ser. II, 107. 



Kansas and New Mexico, near the Rocky Mountains. 



CRIOCEPHAI^IJS MuLS. 



C asperafllS, piceus tenuiter pubescens, thorace subtransverso, lateribus obtuse angulatis, dorso 

 piano ad latera granulis parcis exasperato, utrinque profunde lunatim exeavato, medio sulxauali- 

 culato, ad basin fovea maiuscula impresso, elytris thorace parum latioribus, subtiliter rugosis, 

 lineis utrinque duabus elevatis; oculis modice prominulis, genis subacutis ; antennis corporis 

 dimidio vix longioribus, versus basin crassiusculis, articulis ultimis quatuor subito brevioribus. 

 Long. -96. 



Kansas and New Mexico. Differs from C. agrcsiis by the more flattened thorax, 

 with more numerous elevated granules, and distinctly angulated sides. The 

 antennas are also heavier, and do not differ I'emarkably in length in the two sexes. 



