CERAMBYGIDAE. 285 



the Callidioidos. It seems to lead oft" from the latter toward.s 

 the IStenaspes; it is easily recognized by the peculiar sculpture, 

 and the costate elytra, with epipleuraj prolonged to the tip, a 

 character not observed iu any other tribe. 



Antennae short, serrate, 11th joint appendiculate. Pteroplatus. 



Antennae longer, slender, 11th joint simple. Holopleura. 



Group I. — Rosaliini. 



A very distinct tribe, represented by Rosalia funebris, in 

 Oregon and Vancouver, a large, elongate, velvety black insect, 

 with bands and antenual rings of cinereous. The head is mode- 

 rate, front not elongated, obliquely declivous, antenual tubercles 

 not elevated, gena3 long ; eyes finely granulated, very deeply 

 eraarginated, upper lobe rather broad; antennae long, outer joints 

 sericeous, densely pubescent, joints 3-7 with a tuft of longer 

 hair at the apex, last joint feebly divided in %. Mandibles stout, 

 acute, with a small tooth near the base; nientum narrowed in 

 front, entirely corneous; palpi nearly equal, truncate at tip. Pro- 

 thorax constricted at base and apex, with an acute lateral spine 

 each side, iind two acute dorsal tubercles; prosternum rather 

 broad, eoxal cavities strongly angulated, widely open behind; 

 mesosternum broad, truncate behind, declivous in front; epimera 

 very large, extending to the coxal cavities ; raetasternum not 

 acutely emarginate behind, episterna rather wide, narrowed 

 behind, and nearly pointed; intercoxal process of 1st ventral 

 broadly rounded in front, segments nearly equal in length, 5tii 

 truncate at tip, with an acute, short, medial cleft in 9 ; shorter, 

 triangularly impressed, and hairy in % • the last dorsal in % is 

 deeply emarginate, and in 9 rounded and subtruncate; the Oth 

 ventral and corresponding interior dorsal segment is prominent 

 and truncate in 9. Legs slender, moderately long, thighs not 

 clavate, tibial spurs small, 1st joint of hind tarsi as long as the 

 two following united. 



The affinities of this tribe are somewhat doubtful ; the scu- 

 tcllum is rounded behind; the mesonotum is smooth, with a broad 

 medial vitta of stridulating surface, and a small lateral s])ace is 

 punctured and pubescent. The form of the front coxa) is very 

 much as in Callidium, near which it is placed by Schiodte, but 

 the long and tufted antenna), with the 2d joint very small, and 



