168 Review of the American Bombidm. 



]^OTE. — Mr. P. P, Carpenter having seen the specimens of 

 CoeGutn Cooper% since tlie description of it was in type, is of 

 opinion that it is an ah'eadj described Southern species, pro- 

 bably his C. imhricatum, bnt being nnable at the moment to 

 compare specimens or descriptions could not pronounce posi- 

 tively. 



XXI. — Review of the American Boivibid^e, together with a 

 Description of several Species heretofore undescrihed, heing 

 a Synopsis of the species of this family of Hymenopterous 

 Insects thus far known to inhabit Worth America. 



By John "W, Greene, M.D. 



Eead April 28d, 1860. 



Saint Fargeatj adopting, with certain modifications, Latreille's 

 classification of the Ilymenoptera, according to the habits of the 

 families comprising the order, has placed the Bombidse under 

 the group of Annual Societies, or those which live in companies 

 but for one season, perishing to be replaced by their offspring 

 the succeeding year. Their characters, as laid down by him, 

 are as follows : — 



Tongue almost cylindrical ; in repose about the length of the head ; as 

 long as body when in action. 



Males, females, workers, all having wings in the perfect state. 



Antennaj vibratile, filiform, second article shorter than the third, 

 almost globulous, the third a little conical. 



Posterior legs having two spines at their extremities. 



First article of the posterior tarsi dilated at the external angle of the 

 base, in form of a pointed ear. 



Radial elongated, internal, and detached from the side or external 

 nerve of the wing. 



Four cubitals, the first almost entirely divided in two by a nervure, 

 -which descends to the side, the second a little contracted towards the 



