Mr. Kirby's Ceutitry of Insects. 447 



iDumtissinie rugulosus, cuprco-auratus, dorso elevato bilobo: 

 lobis emarginatis, antice constrictus, postice lobatus, lobo bifi- 

 do. Coleoptva quadrata, tubcrculato-muiicata: tuberculis sub- 

 trjgonis, anlicis acutis, reliquis obtusis anterius excavatis : su- 

 tiiris denticulatis, lateribiis profundc sinuata. Sternum elc- 

 vatum, OS claudens. Femora subtus cuprea, pro receptione ti- 

 biaruni longiludinaliter excavata. Anus inflexus. Segmenta 

 antica brevissima, et quasi plicata, anali profunda cxcavato. 



This species seems to differ from the others of the genus in the 

 structure of its labial palpi, since they are not at all furcated. 

 Whether the other species have the sutures denticulated I do not 

 know, having only this species of the genus. Olivier does not no- 

 tice it. 'The circumstance is so unique and remarkable, that if 

 they have it not, it vrould indicate that C. Bacca belongs to a 

 distinct genus. 



{Choragida.) 



Choragus Kirby. 

 Palpi subsetacei : articulo extimo acuto. 

 AntcnncE clavatte : clava triarticulata, basi articulis duobus pri- 



mis incrassatis. 

 Corpus cylindricum. 

 Caput inflexum : clypeo elongato. 



y\fter repeated examinations under a powerful magnifier, I have 

 not been able clearly to discover more than three joints in the 

 tarsi of this insect; but Mr. Curtis in one tarsus detected four. 

 Indeed its general habit, &c. connect it with the Tetramera, espe- 

 cially Cis and Cryptoccphalus : it will not however well arrange 

 under any of the present faunlies of that section of Coleoptera ; I 

 have therefore considered it as the type of a new one, to which 



some other nondescript genera in my cabinet belong. 



Shep' 



