AMKHICAN PniLOSOPHICAL SOCIETY. 423 



every particular with the short description of that insect in the 

 Syst. Nat. and also in the Syst. Eleut., but this circumstance 

 alone is not sufficient to warrant us in concluding it to be the 

 same, for in this instance, as in very many others wherein brief 

 descriptions are concerned, several distinct species may be re- 

 ferred with equal propriety to the same trivial name. Olivier, 

 in his celebrated work, gives us a few additional characters of 

 the (ri/'iisciafn, the most important of which " on voit unc raic 

 intcrrompue, Ic long de la suture, ju.squc vers le milieu," is 

 with respect to our insect a [411] good discriminative charac- 

 ter, in which this line or vitta never has existence; the size also 

 as depicted by him, tab. 2, fig. IS, is not quite half an inch, 

 whereas that of the luhjnrU is full three-fifths. From these 

 characters it must be evident that Olivier's trifasciata is a dif- 

 ferent iiKsect from the one here described, and as he examined 

 the various cabinets in which the insects de.scribed by Fabricius 

 are preserved, I rely upon his knowledge of the Fabrician spe- 

 cies, particularly as he gives the synonym of that author. 

 Against the correctness of this decision it nught be urged, that 

 Fabricius, in his subsequent work, Syst. Eleut., does not refer 

 to the above mentioned figure, neither does he quote Olivier at 

 all under liis description of trifaacinta ; but this objection, how- 

 ever plausible, will have no weight, when we know that he refers 

 to this very figure, the 18th, of tab. 2, for the C. punctulata, an 

 insect with which it has no other than a generic affinity, and for 

 which, on comparison, it could not be mistaken. 

 [Afterwards described as C ohliquata Dcj. — Lkc] 



2. C. niRTicoLLis. — Obscure cupreous, beneath bluish-green, 

 trunk each side cupreous brilliant, hairy ; elytra with twolunules, 

 intermediate refracted band and outer margin white. 



C. hirticollis, Journal of the Academy of Natural Sciences, 

 vol. 1, No. 2, p. 20. 



Length rather more than half an inch. 



Inhabits Pennsylvania. 



Dcsc. Head cupreous, varied with green or blue, front with 

 cinereous hair; terminal joints of the antennae black, opaque; 

 labrum white, sinuate on the anterior edge, and furnished with a 

 1818.] 



