41-2 



Say^s Descriptions of 



} 



Xylocopa, Latr. ' 



X. Carolina, Fabr. This species was referred "by 

 Fabricius to the genus Centrts, and is even now gene- 

 rally considered as belonging to that genus. But doubt- 

 ing the accuracy of that arranwrnent, I found on exami- 

 nation^ that the labial palpi are rectilinear^ the terniinal 

 joints being in a right line with the others, and the maxil- 

 lary palpi are six jointed. The mandibles have only one 

 large tooth, which is on the inner side. The circumstance 

 of Fabricius referring to Drury's Jig. I, pL 43, of voL i, 

 for BoMBus virgmeus^ Linn, leads me to suppose that he 

 had this species also in view in that description. But as 

 that description in the Syst. Piez. p. 346, agrees very 

 well with one of our largest and finest species of Bombus, 

 rather than introduce a new name, I would transfer the 

 quotation of Drury^s figure to the description of X. Caro- 

 Una, (Centris), F. I add the following description of 

 it, which I formerly drew out, with the name of talida, 

 under the belief that the Carolina, is really a Centris, 

 and therefore altogether different. 



Blackish ; a prominent, compressed, obtuse tubercle 

 between the antenna ; thorax hairy* 



Inhab. United States. 



$ Body black, tinged with purplish : head with close 

 set, discoldal punctures ; an obvious, compressed tubercle 

 between the antennae, rounded at its tip : labrum conic : 

 thorax tinged with greenish ; w^ith pale yellow hair, 

 except on the middle : wings fuliginoiis, sub-opake at - 

 tip: tergum tinted with very obscure green ; baskl joint 

 covered with pale yellow hairs : plejira beneath the wing, 

 with yellow hairs. 



Length about four fifths of an inch. 



■^ i 



