Appendix 



her nest in September, in the soft sandstone 

 locally known as safre. 



BEMBEX JULIL— H. Fab. 



Length, i8 to 20 millimetres.^ Black, 

 with bristling whitish hairs on the head, the 

 thorax and the base of the first segment of 

 the abdomen. Long upper lip, yellow. 

 Ridge-shaped shield, forming a sort of tri- 

 hedral angle, of which one side, that of the 

 fore-edge, is all yellow, while each of the 

 two others is marked with a large rectangular 

 black patch, touching the adjacent one, so 

 that the two together form a chevron; these 

 two patches and also the cheeks are covered 

 with a fine silvery down. Cheeks and a 

 median line between the antennae, yellow. 

 The back rim of the eyes has a long yellow 

 border. Yellow mandibles, brown at the 

 tips. First two joints of the antennae, yellow 

 underneath, black above; the others, yellow. 

 Prothorax, black, with its sides and dorsal 

 division yellow. Mesothorax, black; the 

 callous dot and a small dot on either side, 



^i to i inch. — Translator's Note. 

 416 



