190 THE DIPTERA-BRACHYCERA OF TASMANIA, 



submarginal cells, by the long proboscis, and the longer 

 and differently formed antennae ; and from both these 

 genera by the scaly vestiture. 



Marmamma therefore appears to form a connecting link 

 between Lepidophora and Toxuphora on the one hand, and 

 Amictus and Cyllenia on the other. The exact position of 

 this group of genera seems to l^e open to some doubt. Th.©y 

 have been placed, together with a few other genera, in a 

 subfamily, the Torophorinoe. The limitsi of this subfamily, 

 however, seem to be ill-defined, and until the Australian 

 Bomhylidcp. are properly worked out, and their correct 

 aifinities ascertained, I have preferred to place Marinasoma 

 in the Bo7)ibyIi7ice, with which it seems to show certain rela- 

 tionships. 



Marma^onia may be easily distinguished from the other 

 Tasmanian genera of Bomhi/Jidce by the humpbacked 

 shape, bristly thorax and legs, and long, bare abdomen. 

 Only one species is at present known. 



Marmasoma sumptuosa, Sp. nov. (Fig. 32). 



Thorax dark brown, with twO' median whitish stripes, 

 bordered inwardly with fulvous, anterior part of dorsum 

 and sides with dense fulvous pubescence ; abdomen cloth- 

 ed with fulvous scales, leaving bare a row of large, con- 

 lluent, dark brown, centre spots ; femora black, covered 

 more or less thickly with fulvous scales ; tibiae fulvous, tarsi 

 brown ; wings spotted. 



Length. Male, 8.5-11 mm. 



Hab. Bagdad Valley, Hobart. (Also in Victoria.) 



Malt. Face barely projecting; eyes joined for a long 

 distance, reducing the front to an ocellar tubercle and a 

 lengthened frontal triangle, the former being black, the 

 latter usually yellow. Antennae black, of the form de- 

 scribed in the generic characters, the first joint bearing 

 dense yellow hairs, which are short above, long below, also 

 with a feiw black haira above ; the third joint and style 

 completely bare. Palpi black, short and slender; probos- 

 cis black. Back of head covered with dense fulvoius pubes- 

 cence. Thorax greatl}'' humped, dark brown, with two 

 whitish median stripes, which are bordered inwardly with 

 fulvous ; anterior part and sides of thorax with dense 

 fulvous pubescence, and numerous long black bristles; 

 scutellum dark brown, powdered with fulvous scales, and 

 bearing six stout, black, marginal bristles, besides a few 

 weak ones. Abdomen of a dark brown ground-colour, but 

 powdered so extensively with fulvous scales as to appear 

 fulvous, with a row of large, dark brown, centre spots, the 



