AMERICAN COLEOPTERA. 43 



Thorax more or less shining, Yery unevenly punctured : 



Ch'peus obtusely notohed at middle moechus, Lcc. 



Clypeus broadly emarginato at middle, between two small, 



distant, obtuse teeth remotus, Lee. 



Clypeus acutely and rather deejdy notched between two ap- 

 proximate rounded teeth minutus, Drury. 



In addition to the characters given above all our species of this 

 sub-genus have an elevated ridge extending from the outer angle of 

 the anterior coxoc to near the anterior angle of the prothorax, while 

 the depression for the autcnnal club seen in Pino/us is not evident 

 here. 

 C. anaglypticus, Say, Journ. Acad. Ill, p. 204. 



Easily known from all the species of the subgenus by the dense, 

 coarse punctures of the thorax. The clypeus is acutely notched at 

 middle, the angles of the notch obtusely rounded and a slight sinua- 

 tioa on the outer side of each. The middle of the anterior edge of 

 the presternum is armed with a tooth, obtuse at tip, which arises sud- 

 denly. Elytral strias broad, punctures transverse. Length .52 — .70 

 inch ; .13 — .18 mm. 



Abundant from Canada to Texas. 



In the southern and western specimens the horn of the head of the 

 male is frerjuently long. In females or in more northern forms the 

 horn is very short or reduced to a mere tubercle. 



C. moechus, Lee. Proc. Acad. 1854, p. 222. 



Similar to the preceding, but differs in having the thorax much 

 more sparsely and irregularly punctured and not opaque. The clypeal 

 emargination is a broad notch. The middle of the anterior edge of 

 the prosternum is acutely produced but not in the manner of a suddenly 

 formed tooth. Length .70 inch j 19 mm. 



Texas. 

 C. remotus, Lee. Proc. Acad. 1S6G, p. 581. 



Tiic middle of the anterior edge of the prosternum is broadly and 

 obtusely produced. The clypeus is slightly emarginate at middle be- 

 tween two distant, small obtuse teeth. The hind tarsi are shorter and 

 broader than in any of our species, the joints 2, 3 and 4 being as broad 

 at distal end as long, while in all our other species they are nearly 

 twice as long as broad. Surface shining, thorax coarsely punctured, 

 nearly smooth at base. Length .54 — .64 inch; 13.5 — IG mm. 



Texas and Matamoras, Mexico. 



C. minutus, Drury, (Scarabaeris) Exot. Ins, p. 78, pi. 35, fig 6; A7nmon Fab. 

 (Copris) Entomologia I, 44; Olivier, Ent. I, 3, p. 123, pi. 12, fig. Ill ; Lar Fab. 

 Mantis 1, p. 13; reflexus Panz. Fauna Am. Bor. p. 7; silenus Fab. Eut. 1. p. 18. 

 (The latter was described from an erroneous locality.) 



