302 Mr. R. E. Turner on Fossorial Hymenoptera, 



? . Cljpeus with a broadly arched depression on the apical 

 quarter, the margin transverse, the deflexed portion bare and 

 shining, tlie basal portion densely clothed with silver pubes- 

 cence, which extends on to the front. Second joint of the 

 flagellum equal to the third, less than twice as long as the 

 first ; eyes separated on the vertex by a distance greater by 

 one-third than the length of the second joint of the flagellum ; 

 a sulcus reaching from the posterior ocelli to the occiput. 

 Pronotum thick ; mesonotum, scutellum, and mesoj^leurffi 

 closely and minutely punctured, the mesopleuras and sides of 

 the mesonotum clothed with whitish pubescence. Thorax 

 subopaque ; median segment opaque, more strongly punctured 

 than the thorax, with a distinct median sulcus which is more 

 deeply continued on the posterior slope, clothed with short 

 pubescence, silvery on the sides, greyish and sparser in the 

 middle of the dorsal surface, fully half as long again as the 

 scutellum. Abdomen subopaque, pygidial area elongate- 

 triangular, very narrowly rounded at the apex. Basal joint 

 of the fore tarsi with five slender spines on the outer margin. 

 Second abscissa of the radius distinctly longer than the 

 third ; first recurrent nervure almost halfway between the 

 second recurrent and first transverse cubital nervures, a little 

 nearer to the former than to the latter. 



The male has the joints of the antennas shorter than in 

 the female, so that the eyes are separated on the vertex by a 

 distance fully equal to the combined length of the two basal 

 joints of the flagellum ; there are only four small spines on 

 tiie outer margin of the basal joint of the fore tarsus, and the 

 seventh dorsal segment is black at the base and clothed witii 

 silver pubescence. 



Hah. Kalaraunda, S.W. Australia [Turner) ; February 

 and March. 3 3" cJ , 1 ? • A single male apparently of the 

 same species taken at Townsville, Q., by F. P. Dodd. 



7. Tachytes cestuans^ sp. n. 



5 . Nigra, albo-pilosa ; tarsorum articulo apicali, tibiarum tarso- 

 rumque spinis ferrugineis, tegulis pallida brunneis ; segmentis 

 dorsalibus 1-4 fascia apicali argenteo-sericea ; area pygidiali 

 dense aureo-setosa ; alls hyalinis, venis fusco-ferrugineis. 



Long. 14 mm. 



? . Clypeus transverse at the apex, deflexed in the middle 

 just before the apex, and clothed with rather long white 

 pubescence which extends on to the front. Second joint of 

 tlie flagellum equal to the third, more than twice as long as 

 the first ; eyes separated on the vertex by a distance equal to 



