244 HYMENOPTERA. 



19. Sphex CASTANEIPES. 



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

 Hah. 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 portion 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 tegulae ferruginous ; the petiole and extreme base of the ab- 

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

 spot at the base. 



Hab. Tripoh. 



22. Sphex nigrita. 



Sphex nigrita, Lucas, Explo. Sc. Alger, iii. 2/1. 

 Hab. Algeria. 



23. Sphex affinis. 



Sphex affinis, Lucas, Explo. Sc. Alger, iii. 2/2. - 



Hab. 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. 



Hah. Algeria (Oran). 



25. Sphex trichargyra. 



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



Hah. Egypt. 



This is probably a highly coloured example of Priononyx alhi- 

 secta, or certainly a closely allied species. 



