216 hymenoptera. 



40. Ammophila dimidiata. B.M. 



Female. Length 11 lines. — Head and thorax black; the 

 scape, five or six of the basal joints of the flageUum, the oWpeus 

 in the middle, and the mandibles ferruginous ; the latter black 

 at their tips. The pro- and raesothorax above and the scutellum 

 ferruginous and transversely striated ; the metathorax rugose, 

 the sides of the enclosed space striated ; on each side of the 

 enclosure, one or two minute ferruginous spots ; these are 

 sometimes obsolete ; wings yellow, their aj)ical margins faintly 

 clouded, a fuscous spot at the apex of the marginal cell ; legs and 

 tegulaj ferruginous, the coxa? more or less fuscous or black at 

 their base. Abdomen bright blue, the petiole ferruginous, with 

 a fuscous spot at the base of the second joint. 



Hab. India (Bombay ; Madras; N. Bengal). 



41. Ammophila erythrocephala. B.M. 



Sphex erythrocephala, Fabr. Ent. Si/st. ii. 204. 23. 



Pelopocus erythrocephalus, Fabr. Syst. Piez. p. 203. 2; Cab. 



Banks. Mus. Linn. Soc. 

 Ammophila erythrocephala, St. Farg. Hym. iii. 385. 26. 



Hab. India (Punjaub). (Coll. Gen. Hearsey.) 



42. Ammophila elegans. B.M. 



Female. Length 10 lines.— Black : the head and thorax 

 densely clothed with silvery pile ; the scape in front, and the 

 basal half of the mandibles ferruginous. The metathorax trans- 

 versely striated ; the wings hyaline, the nervures rufo-fuscous ; 

 the tegulae and legs ferruginous ; the coxse, posterior trochanters, 

 and the anterior and intermediate pairs above, black ; the poste- 

 rior femora black towards their base above ; the first joint of the 

 petiole, and the base of the second joint black; the rest of the 

 abdomen ferruginous, the apical margins of the segments being 

 pale ; the third segment has a fuscous spot in the middle of its 

 base. 



Male. Length 9 lines. — This sex closely resembles the female, 

 differing only in having several fuscous spots down the middle 

 of the abdomen. 



Var. The tarsi fuscous, sometimes only the anterior and inter- 

 mediate pairs. 



Hab. Northern India (Punjaub). 



The male differs in having the petiole almost entirely red, 

 and in all the specimens examined, merely a fuscous spot at 



