244 hymenoptera. 



19. Sphex castaneipes. 



Sphex castaneipes, Dahlb. Hym. Europ. i. 27. 12 & 438. 

 Hab. Africa. 



20. Sphex subtruncata. 



Sphex subtruncata, Dahlb. Hym. Europ. i. 25. 6. 

 Hab. Africa. 



21. Sphex gratiosa. B.M. 



Male. Length 12 lines. — The head, antennae, prothorax, legs 

 and abdomen ferruginous ; the meso- and metathorax black ; 

 the prothorax black beneath ; the mandibles ferruginous, with 

 their tips black ; a quadrate black spot on the vertex enclosing 

 the ocelli ; the enclosed j)ortion of the metathorax transversely 

 and finely striated, the apical portion of the metathorax trans- 

 versely sulcated ; the wings dark fuscous with a violet iridescence, 

 the tegulse ferruginous ; the jietiole and extreme base of the ab- 

 domen black : beneath, the second segment has a large fuscous 

 spot at the base. 



Hab. Tripoli. 



22. Sphex nigrita. 



Sphex nigrita, Lucas, Explo. Sc. Alger, iii. 271. 

 Hab. Algeria. 



23. Sphex affinis. 



Sphex affinis, Lucas, Explo. Sc. Alger, iii. 272. 

 Hah. Algeria. 



24. Sphex afra. B.M. 



Sphex afra, St. Farg. Hym. iii. 350. 24. t. 30. f. 3 ? . 

 Lucas, Explo. Sc. Alger, iii. 270. t. 14. f. 3. 



Hab. Algeria (Oran). 



25. Sphex trichargyra. 



Sphex trichargyra, Spin. Ann. Soc. Ent. Fr. vii. 466. 11 (1838). 



Hab. Egypt. 



This is probably a highly coloured example of Priononyx albi- 

 secta, or certainly a closely allied species. 



