Hymenoptera Orientalis. 479 



nervure. Head almost transverse in front, concave behind. 

 Eyes arcuate at top, almost converging at bottom. Ocelli 

 in a triangle, the hinder separated from each other by a 

 distinctly greater space than they are from the eyes. 

 Antennae longish, brownish underneath. Clypeus convex, 

 almost transverse at the apex in the middle ; the sides 

 obliquely rounded. Prothorax a little longer than the head ; 

 almost transverse behind ; the pleurae bulging out on the 

 lower side ; and excavated broadly behind this bulge ; 

 the sides at top straight, not much narrowed till near 

 the head. Median segment longer than the mesothorax, 

 with a gradual slope to the apex ; towards the apex 

 with some indistinct waved striae. Abdomen subsessile. 

 Legs moderately long, the tibiae with a few spines ; the 

 tarsi without them except at the apices of the joints ; the 

 long spur of the hind tibiae reaches a little beyond the 

 middle of the metatarsus. Wings short. 



Length, 6 mm. 



Apart from colouration, this species is very distinct from 

 A. cotesi % The head is concave behind, the collar is longer 

 than the head, the prothorax almost transverse behind ; the 

 medium segment distinctly longer than the mesothorax, 

 and the wings are shorter ; the apical segment is rugose, 

 densely covered with a stiff reddish pile, and at the apex 

 with some longish hairs. It is a true Aporus, 



(^Received June 2jrd, i8gi,) 



To the above are to be added the following, mostly 

 very inadequately, described species of Mr. F. Smith in his 

 posthumous work, " New Species of Hymenoptera in the 

 British Museum." 



Pompilus clotko, p. 146. Sumatra. 

 „ lachesis, p. 146. Sumatra. 



A4 



