BY ARTHUR WHITE. 35 



of the antennae. Palpi small, very widely separated, not 

 more than one-quarter the length of the proboscis, ter- 

 minal joint spoon-shaped. Antenna? black, about thei length 

 of the head, the first two joints small, the first more 

 than twice the length of the second, the third longer than 

 the first two joints together, expanded in the middle and 

 tapering to a very minute sharply-pointed style. Eyes 

 bare, separated but not very widely. Front black, smooth 

 and shining. Thorax brownish-black, with a broad velvet 

 black median stripe reaching to the scutellum, with which 

 it is of equal breadth ; scutellum velvet black, with four 

 black terminal bristles. Abdomen long and tapering, deep 

 black, the last segment and genitalia brownish-black, the 

 second, third, and fourth segments with white hind- 

 margins, the whole covered with short white and black 

 hairs, the white predominating; genitalia long and slen- 

 der. Legs with femora, black, tibiae brown with black 

 bristles, the knees yellow-brown, those of the anterior pair 

 being the lightest ; tarsi dark brown, the first joint pale 

 at the base. Wings hyaline, without any distinct stigma, 

 veins black, the fourth posterior cell closed near to, the 

 anal cell far from, the wing margin. 



Female resembles the male very closely, but the eyes 

 are more widely separated, and the wings very faintly 

 clouded with black across the centre. 



This species shows little variation, but I have one female 

 in which the white hindmargins of the abdominal seg- 

 ments are very faintly marked, that of the third segment 

 being wanting, and the legs are a much lighter brown 

 than usual. 



L. nitidifrons can only be confused with the species next 

 to be described — L. actuosus — from which it may be dis- 

 tinguished by the hyaline, or almost hyaline, wings, by 

 the wholly black femora, by the uninterrupted hind- 

 margins to the second, third, and fourth abdominal seg- 

 ments, by the contrasted colouring of the thorax, and 

 by the longer proboscis. 



L. nitidifrons occurs sparingly in the bush in the neigh- 

 bourhood of the Bagdad Valley, and has also been taken 

 by Mr. Hardy at Wedge Bay. It may be found settled 

 on tree trunks or on the ground. My dates range from 

 January 31 to February 15. 



Lonchorhynchus actuosus, Sp. nov. (Fig. 20). 



Head much produced in front ; thorax black, indis- 

 tinctly striped ; abdomen long, black, the hindmargins of 

 the second, third, and fourth segments white, interrupted 



