1869.] 369 [Cresson. 



Hah. — Orizaba. (Prof. F. Suraichrast. Coll. Am. Ent. Soc.) 

 Two ? specimens. This is the most beautiful species of this family 

 that I have seen, the silvery ornamentation being exceedingly bril- 

 liant. Seems to be closely allied to the South American P. nohilis, 

 which is said to have the anterior wings black at tip, whereas in the 

 species above described, tlie apex is hyaline. 



8. Pompilus confusaneus, n. sp. 



(5. Black, covered with a dense, appressed, cinereous pubescence; 

 vertex black, shining, thinly pubescent; anterior margin of clypeus 

 broadly rounded; mandibles shining, reddish at tijj; antenna3 short, 

 thickened, opaque black, subsericeous, two basal joints cinereous; 

 prothorax large, cinereous, with a large triangular black mark on 

 each side above, posterior margin arcuate, posterior angles prominent; 

 mesothorax black, margined laterally and posteriorly with cinereous; 

 scutellum black, the sides and postscutellum cinereous, as well as the 

 metathorax except base, and the pleura except a space on each side, 

 which are black; wings hyaline, apical third fuliginous, second sub- 

 marginal cell quadrate, the third much larger, very slightly narrowed 

 above, receiving the second recurrent nervure in the hiiddle ; legs 

 black, more or less densely covered with cinereous pile; four pos- 

 terior tibiae sparsely splnose ; abdomen subcompressed, densely cine- 

 reous, with a broad black band on jjosterior margin of first and second 

 segments, much narrowed on the sides. Length four lines. 



Hab. — Orizaba. (Prof. F. Sumichrast. Coll. Am. Ent. Soc.) One 

 S specimen. Closely allied to unicus Cresson, from Cuba, but is 

 longer, with thorax much less gibbous; the cinereous pubescence 

 rather more dense and darker in color; the shape of the submarginal 

 cells is different, the third being much larger than the second, which 

 latter is not narrowed towards the marginal; the abdomen is longer, 

 subcompressed, the second segment not dilated; and the general or- 

 namentation is different. It is, however, a closely allied species, and 

 with the next, referable to a subgenus near Ferreola. 



9. Pompilus connexus, n. sp. 



6. Size and general form of unicus Cresson; black, shining, 

 silvery-sericeous, the silvery pile more dense on the face, anterior 

 margin of mesothorax, apex of metathorax, pleura beneath, legs, 

 and apex of abdomen ; clypeus broadly rounded in front ; anten- 

 nae short, thickened, opaque black, scape silvery; thorax unusually 

 gibbous, the head being bent downwards; prothorax large, broadly 

 rounded posteriorly; metathorax large, broadly rounded posteriorly; 



PROCEEDINGS B. S. N. H.— VOL XII. 24 APRIL, 1869. 



