NO. 1487. NORTH AMERICAN DIGGER WASPS— FERNALD. 417 



SPHEX ARGENTATA Dahlbom. 



Smith" records this insect from Greece, India, Java, Africa, and 

 from St. Joiins Bliifl', Florida. It is a well-known Old World species, 

 and as no other record of its capture in America exists it is probably 

 an erroneous record and ma}' safely be omitted from the American 

 faunal lists. 



SPHEX AURULENTA Fabricius. 



The only authority for this species as American is the locality "Am. 

 bor." in Dalla Torre's Catalogus Hymenopterorum, and as there seems 

 to be no other record of it from this country, while it is well known 

 from India and China, I must consider this as an error and regard it 

 as not an American insect. 



SPHEX CRCESUS Lepeletier. 



Spliex criesus Lepeletiek, Hist. Nat. Ins. Hym., Ill, 1845, p. 351. 



This insect was described from "Amerique Septentrionale. Mon- 

 tag'nes rocheuses." Dalla Torre suggests that it ma}' be a variety of 

 C. iehneumoneum^ and this may be correct. 



SPHEX DIMIDIATA De Geer. 



SpJiex (hmidiata De Geer, Mem. Hist. Nat. Ins., Ill, 1773, p. 589, pi. xxx, fig. 5. 



This species, which was from Pennsylvania, is compared with a 

 Sceb'ph?'0)i, and it may also be one of that genus. The tigure is of no 

 assistance. 



SPHEX DIMIDIATA Lepeletier. 



SpJiex dbmdiata Lepeletier, Hist. Nat. Ins. Hym., Ill, 1845, p. 352. 



From "Amerique Septentrionale." It may possibly be a fuliginous 

 winged C ichyiexiinoneiim. 



SPHEX DORSALIS Lepeletier. 



Sp](ex dorsalis Lepeletier, Hist. Nat. Ins. Hym., Ill, 1845, p. .347. 



Lepeletier's description was prepared from a male taken at Cayenne. 

 It is possible that it is a specimen of C. spiniger, with considerable 

 ferruginous on the abdomen, but no certainty seems possible. 



SPHEX EXCISUS Kohl. 



Sphex excisus Kohl, Ann. natur. Hofmus. Wien, V, 1890, p. 362. 

 I am unable to separate this species by the description from C hi/o- 

 veolatum Taschenberg, as the differences are mainly those of relative 

 lengths of different parts, and some specimens I have examined agree 



«Cat. Hym. Brit. Mus., IV, 1856, p. 252. 



