262 hymenoptera. 



96. Sphex Philadelphica. 



Sphex Philadelphica, St.Farg. Hym. Europ. i. 340. 11. 

 Hab. Philadelphia. 



97. Sphex tibialis. 



SjAex tibialis, St. Farg. Hym. Europ. i. 339. 10. 

 Hab. Philadelphia. (Coll. W. W. Saunders, Esq.) 



98. Sphex violaceipennis. 

 Sphex violaceipennis, St. Farg. Hym. iii. 349. 22. 

 Hab. Philadelphia. 



99. Sphex crcesus. j 

 Sphex crcesus, St. Farg. Hym. iii. 351. 25. ' 

 Hab. North America; Mexico. (Coll. F. Smith.) 



100. Sphex dimidiata. 



Sphex dimidiata, St. Farg. Hym. iii. 352. 26. 

 Hab. North America. 



101. Sphex elegans. B.M. 



Male. Length 7 lines. — Black : the face covered with a short 

 rich golden jnibescence, and sprinkled with long hairs of the 

 same colour ; the mandibles ferruginous at their apex. Thorax 

 thinly covered with erect golden hairs; the mesothorax and 

 scutellum evenly punctured ; the metathorax opake ; wings yel- « 

 low-hyaline, with a pale fuscous cloud at their apical margins, m 

 and a darker one beyond the marginal cell ; the nervures pale | 

 ferruginous; the knees, tibia; and tarsi pale ferruginous; the J 

 tips of the claws black. Abdomen smooth and shining, with the 

 apical margins of the segments obscurely rufo-testaceous ; some- 

 times the two basal segments are ferruginous, with the base of 

 the first, and base and apex of the second, black. 



Hab. California. 



102. Sphex apicalis. B.M. 



Sphex apicalis, Harris, Cat. Ins. Massach. 



Male. Length 6-8 lines. — Black : the face covered with short 

 silvery pubescence, and sjirinkled with a mixture of long fuscous 

 and pale hairs ; the mandibles slightly ferruginous at their inner 

 margin towards their apex ; the vertex is shining, sparingly and 



