190 AVSTRALIAX FLIES OF THE FAMILY ASILIDAE, 



The dorsal and ventral surfaces of the male genitalia taper towards the apex 

 which is truncate. Two super- and one, rarely two, post>alar bristles 



vUtipes Macquart. 



6. The male genitalia with bristles 9. 



The male genitaUa without bristles 7. 



7. The anterior femora with a conspicuous row of ventral spines. Female ovi- 



positor very long. Two super-, one, rarely two, post-alar bristles 



armatHS Macquart. 

 The anterior femora without ventral spines. Female ovipositor short 8. 



8. The female ovipositor entirely compressed. Super- and post-alar bristles one each 



claripes White. 



The female ovipositor compressed ventrally, but with a dorsal surface. Two 



super- and one or two post-alar bristles maculatoidcs, n.sp. 



9. The upper forceps of the male genitalia wHth a row of about ten slender dorsal 



bristles. Female ovipositor short. Two super-,one or two post-alar and two 



scutellar bristles iiiargi/es Walker. 



The upper forceps of the male genitalia with one long, ventral, subapical bristle, 

 and a row of ventral bristles on the lower forceps. The female ovipositor is 

 short, and the sixth and seventh abdominal segments of the female are sub- 

 compressed, black and shining. Two or three superalar, three or four postalar 

 and four scutellar bristles se/osus, n.sp. 



Neoitamus ABDiTtJS White. (Text-figs. 1-3.) 



Neoitamus abditus. White, Proc. Roy. Soc. Tas., 1916, p. 178, text-fig. 29 (wing) ; 

 and 1917, p. 93 (in key). 



Synonymy. Outstanding descriptions of the AsiUnae are not sutlicient i'or 

 N. abditus White to be identified as one of them, but it is possible that A. 

 acutangulatus Macquart may belong here. 



Description. The species will be readily recognised by the small separated 

 lamellae of the female ovipositor. 



d". The face has a large tubercle containing black hairs which increase in 

 length towards the centre; the centre of the tubercle contains six. shorter, black 

 bristles; below these bristles there are slender white hairs which are sometimes 

 bordered laterally by a row of very fine l^laek hairs. Behind the eyes there is a 

 row of black bristles. 



The dorsal bristles of the thorax are disposed on each side of the median 

 line as follows: — two presutural ; two sujieralar. one of which is weak; one post- 

 alar; about six dorsocentral, between each of which there is a thin bristle-like iiair. 



The hypopleural and metapleural bristles are present, and the scutellar 

 bristles are two or four in number. All the bristles of the thorax and scutellum 

 are black. 



The bristles towards the apex of the abdominal segments are mostly white, 

 but black bristles occur on the posterior se,gments. The second to fifth segments 

 have two conspicuous, erect, lateral white bristles. The upper forceps of the male 

 genitalia are .simple and moderately hairy; seen laterally, they yre more or less 

 parallel-sided. 



The le.gs have the anterior femora without spines; the intermediate femora 

 have a row of spines on the anterior side, but this row is often reduced in num- 

 ber to two spines: the subapical spine tm the posterior side is present; the pos- 

 terior femora have only one row of spines present on the anterior side; there is 

 one stihnpical dorsal spine and a ventral row of spines. 



