84 PROCEEDINGS CF THE ROYAL SOCIETY OF QUEENSLAND, 



Tryon, Queensland Government Entomologist, as well as one 

 bred by Miss M. J. Bancroft from rotten potato in Eidsvold 

 in March 1920. 



19. Sarcophaga sigma n. sp. (Fig. 17). 



General appearance closely resembling S. aurifrons. 



Male. — Head. — Eyes dark red-brown, and very flat in 

 front, giving the front a very prominent appearance. Para- 

 frontals gold with dark reflections. Pront half as wide as 

 eyes ; frontal stripe nearly black, a little wider than para- 

 frontals. Gense golden with a rather brassy tint. Occiput 

 golden. Mesofacials silvery ; epistome fairly prominent. 

 First antennal segment not very conspicuous ; second large, 

 nearly black ; third about twice length of second, nearly 

 black. A row of twelve frontals beside frontal stripe. Verticals 

 present ; lateral verticals rather well developed. Eight 

 peristomials and seven facials present. Three rows of short 

 black bristles behind eyes ; the first row much more regular 

 and complete than the others. Hairs below these short and 

 silvery, developing into a beard-like growth below. Anterior 

 part of genae with black bristles. 



Thorax golden grey with the usual black longitudinal 

 stripes, only the middle one extending prominently on to the 

 scutellum. Sides grey, tinged with golden, under side grey ; 

 anterior spiracle with brown hairs. Of the acrostichals only 

 the prescutellar pair present, though very weakly developed ; 

 three intra- alars ; dorsocentral row complete ; apical scutellars 

 present ; lowest humeral very large, extending just* on to the 

 mesonotum . 



Legs black and grey. First femur tinged with gold 

 ventrally, not hairy ; tibia longer than tarsus. Second femur 

 with a " comb," hairy proximo-ventrally. Third femur only 

 slightly hairy ; tibia not hairy. 



Abdomen conical, shorter than thorax, with the usual 

 black and white markings. Dorsal median line wide, but 

 irregular, not extending on to last segment. Covered dorsally 

 with short black reclinate bristles ; hairy ventrally. Last 

 segment of hypopygium shiny black, hairy ; forceps fairly 

 straight, bare at tips, hairy above. Accessory plate dark brown, 

 hairy. Claspers dark shiny black. The penis is a heavily 

 cliitinised structure ; the last segment nearly black, and 

 divided distally into two parts, as figured (Fig. 17). The 



