the Asilidai of Australasia. 4'23 



tibiae, elsewhere chiefly black. Winys hyaline, veins reddish, 

 the small cross-vein beyond the middle of discal cell, the 

 first posterior cell almost the same width throughout, the 

 fourth closed. 



Machimus, Loew. 



Linn. Ent. iv. p. 1 (1849). 



This genus has not been recorded before from the 

 Australasian Region ; but two species are known from the 

 Oriental Region, one being Asilus atraiulus, Wlk., the type 

 of which is in the Brit. Mus. Coll., from Java, a species with 

 the legs black. I believe Asilus antilco, Walker, belongs to 

 this genus, but it is in bad preservation. There is a female 

 from Queensland which also appears to belong to this genus, 

 but is a different species. 



Machemus antilco, Walker. = ^i/^--^^^^^^^-^ d^^nJu, A^.^ ^^ /^ 

 List Dipt. ii. p. 458 (1849), et vii. Suppl. 3, p. 737 (1855). 



Type ( ? ) from Port Stephen. 



Length 15 mm. 



A blackish species. Face black, with yellowish tomentum 

 at sides, the tubercle distinct, the moustache consisting of 

 numerous black bristles and hairs. Antennce black, the first 

 two joints with black hairs. The thorax black with grey 

 stripes. Legs black ; the tibise yellow, black at apex ; the fore 

 femora armed below with at least four stout short bristles and 

 iucrassate, on the hind femora these bristles are present but 

 not so strong, and they are not so incrassate. Wings hyaline, 

 the small transverse vein beyond the middle of discal cell. 

 Abdomen very dirty and ovipositor not quite complete. 



Heligmoneura, Bigot. 



Thorns., Archiv. Entom. ii. p. 356 (1858). 



Mochthe.rif, Loew, Linn. Ent. iv. p. 58 (1849) [prseocc. Schmidt, 



Goebel Coll., 1846]. 

 Neomochtherus, Ost.-Sack., Cat. Dipt. N. Amer. ed. 2, pp. 82 <& 235 



(1878). 



The only species recorded from the Australasian Region 

 are : — 



Ii. lascus, Wlk., List Dipt. ii. p. 466 [_Asilus\ (1849), et vii. Suppl. 3, 

 p. 743 \^Asilus] (18o3j ; Hutton, Cat. New Zealand Dipt. &c. p. 30 

 [^Asilus^ et Trans. New Zealand Inst, xxxiii. p. 22 [^Stenoprosopis] 

 (1901). 



II. lauta, Y. d. Wulp, Tijd. v. Ent. (2) vii. (xv.) p. 242 [Mochtherus] 

 (1872j, et Cat. Dipt. S. Asia, p. 96 [Mochtherus] (1896j. 



