172 THE DIPTERA-BEACHYCERA OF TASMANIA, 



Proctacanthus DURViLLti, Macq. 



This species is described as having the thorax blackish, 

 with yellow pubescence and three black stripes ; abdomen 

 shining black with blue reflections; femora black, tibiae 

 reddish, with reddish bristles. 



Length. Female, 18 mm. 



37. Dysmachus, Lw. 



Thorax bearing long bristles from front to back ; mou- 

 stache large and bushy; abdomen with lateral bristles. 



Face somewhat projecting; moustache large and bushy. 

 Antennae with the third joint usually elliptical, but in the 

 Australian species elongated and almost linear. Thorax 

 bearing long dense bristles from front to back ; abdomen 

 with lateral bristles; genitalia of male large; ovipositor 

 of the female with the end lamellae w^edged-in. Legs stout, 

 liairy and bristly, the bristles on the tibiae unusually long. 

 Wings with the normal venation of Asilus. 



DyfimarJnis is represented in the Australian region by 

 a single species, D. riidis, Wall, which does not seem quite 

 typical of the genus. 



Dysmachus rudis, Walk. 



Thorax grey-brown, with two darker centre stripes; 

 abdomen grey-brown, with hind-margins of segments 

 white ; legs black, with base of tibiae and base of first tarsal 

 joint reddish ; wings brownish or hyaline. 



Length. Male and female, 12 mm. 



Hab. Mangalore. (Probably generally distributed.) 



Male. Face grey; moustache large and bushy, reach- 

 ing nearly to the antennae, black, with a few white hair* 

 below. Antennae black, the first joint twice the length of 

 the second, the third longer than the first twO' joints to- 

 gether, and bearing a thin style. Thorax grey-brown, with 

 two darker centre-stripes, and suffused interrupted side- 

 stripes, the whole bearing long black bristles, which de- 

 scend mane-like to the front margin ; scutellum with two 

 long black terminal bristles. Abdomen grey-brown, with 

 hind-margins of segments white, and black lateral bristles ; 

 genitalia black, large and prominent. Legs black, the 

 base of tibiae and of first tarsal joint reddish ; all joints 

 bearing black bristles, those on the tibiae being; especially 

 long. Wings usually brownish, but. sometimes hyaline. 



Female resembles the male very closely, but the abdomen 

 is produced into a laterally-flattened ovipositor, resembling 

 that of NeoitamiAs, though shorter than in most species of 

 that genus. 



