TUDIES IN THE FOSSORIAL WASPS. 735 



5 . Radial cell rounded at the apex ; third abscissa of the radius 

 shorter than the second ; third cubital cell as long on the radius as 

 on the costa ; first recurrent nervure received just beyond one- 

 third from the base of the second cubital cell, second at one-fifth 

 from the base of the third cubital cell ; second cubital cell not 

 very strongly produced towards the base. Tarsal ungues bifid, 

 without a basal lobe ; basal joint of hind tarsi with rather long 

 haiis beneath ; lobe beneath the apical half of the hind femora 

 broadly rounded. Closely punctured ; rather strongly on the 

 head, finely on the thorax, coarsely on the scutellum, rather 

 sparsely and shallowly on the abdomen ; sixth dorsal segment 

 rather broadly truncate at the apex. 



Black, with grey pubescence, a fusco-sanguineous spot on the 

 vertex on each side close to the summit of the eyes ; sixth dorsal 

 segment fuscovis at the apex, calcaria whitish. 



Hah. S. Australia ; probably from Adelaide. 



This species is remarkable for the very long second abscissa of 

 the radius, and may be easily distinguished from the majority of 

 Australian species by the bifid tarsal ungues. 



1.3. Anthobosca nubilipennis Turn. 



Anthohosca nuhilipennis Turn. Proc. Zool. Soc. London, p. 307 

 (1910), $. 



5 . Radial cell detached from the costa for fully half its length, 

 slightly angular at the apex ; second abscissa of the radius longer 

 than the first and about equal in length to the third ; first 

 recurrent nervure received beyond two-thirds from the base 

 of the second cubital cell, second before one-quarter from the 

 base of the third cubital cell, which is nearly twice as long 

 on the cubitus as on the radius. Tarsal ungues bifid, without a 

 basal lobe ; hind femora convex beneath, the lobe not apical but 

 almost medial ; basal joint of hind tarsi with three or four short 

 spines beneath. Deeply but not very closely punctured ; meso- 

 notum and scutellum very sparsely punctured ; sixth dorsal 

 abdominal segment coarsely striated at the base, rounded at the 

 apex. 



Black, with white pubescence ; calcaria black. Wings fusco- 

 hyaline, nervures fuscous ; the stigma small. Median segment 

 abruptly truncate. 



Length 16 mm. 



Hab. Perth district, S.W. Australia. 



A very distinct species in the characters of the hind legs, 

 neuration, and median segment. 



1 4. Anthobosca clypeata Sm. (PI. LXXXI. fig. 2 ; PI. LXXXII. 

 fig. 5 ; PI. LXXXIII. fig. 7.) 



Dimorphoptera clypeata Sm. Trans. Ent. Soc. London, p. 239 

 (1868), 2. 



$ . Radial cell rounded at the apex, detached from the costa 



