Hymenoptera in the British Museum. 71 



Sixth dorsal segment broadly rounded at the apex, with sparse 

 punctures, each of which bears a long black hair. Basal joint of 

 the fore tarsi with seven long slightly spatulate spines; inter- 

 mediate and hind tibiae with a patch of grey pubescence at base 

 and apex, fore tibiae with a line of grey pubescence on the outer 

 side. Tarsal ungues unidentate. Second abscissa of the radius 

 more than half as long again as the third, the second cubital cell 

 as long on the cubitus as the third ; first recurrent nervure received 

 at about one-sixth from the apex of the second cubital cell, second 

 close to the middle of the third cubital cell. Cubitus of hindwing 

 interstitial. 



Hah. S.W. Australia, Waroona {G. F. Berthoud), 

 January. 



This is a western form of semiluctuosis, differing little 

 from that species except in the presence of an additional 

 spine on the basal joint of the fore tarsi, and in the much 

 more broadly interrupted abdominal fasciae. 



8. Psammochares melancholieus, Sm. 



Pompilus melmicholicus, Sm., Trans. Ent. Soc. London, 

 p. 244, 1868, $c^. 



This species closely resembles semiluctuosus in colour, 

 but is much smaller, the joints of the flagellum are less 

 elongate, the abdominal fasciae continuous, the sixth 

 dorsal segment much more narrowly rounded at the apex, 

 the basal joint of the fore tarsi with only three spines, 

 and the median segment with an oblique band of cinereous 

 pubescence on each side near the apex. The male has 

 the apical ventral segment with a low longitudinal carina, 

 the hairs on the segment and the apical fringe short ; the 

 sixth ventral segment almost flat, not strongly convex. 



Hab. S.W. Australia, Yallingup {Turner), October to 

 December; Champion Bay [Du Boulay). 



Smith's type is unfortunately lost, but his description 

 of the species as only 5 lines long agrees with the present 

 species much better than with the larger allied species 

 occurring in the same locahty. My specimens measure 

 $, 13 mm.; (^, 7 mm, 



9. Psammochares vassei, sp. n. 



$. Differs from melancholieus in the larger size, the female 

 measuring 18 mm., in the much broader apex of the sixth dorsal 



