SARCOPHAGID FLIES FROM SOUTH-EASTERN QUEENSLAND. 59 

 f 



side greyish. Three humerals present ; the last two pairs of 

 anterior acrostichals feebly represented. Of the posterior 

 set, only the prescutellars are develop3d. Dorsocentral row 

 ■complete ; two intra-alars prasent. Anterior spiracle with 

 light- brown hair. 



Legs black and grey. First femur hairy ; the longitudinal 

 rows of bristles very completely developed ; tibia longer than 

 tarsus. Second femur hairy proximo-ventrally ; a "' comb" 

 differentiated ; tibia extremely hairy. Third femur very hairy ; 

 tibia moderately so. 



Abdomen with usual black and white markings, the 

 median black line extending faintly on to last segment. Covered 

 above with short reclinate bristles, below rather hairy. 



First segment of hypopygium brown, slightly pollinose ; 

 second shiny, almost black, hairy. Forceps shiny black, 

 sculptured externall}^ ; approximated for about two-fifths 

 their length, sharply pointed, angular in lateral view, the 

 upper arm only being hairy. Accessory plates somewhat 

 oval in shape, dark brown, with long hairs. Claspers very dark 

 brown ; posterior clasper very broad : the anterior clasper 

 with two strong processes. The anterior part of the membrane 

 surrounding the base of the penis also develops a short, blunt, 

 yellowish process. Distal joint of penis fairly heavily chitin- 

 ised. It is of the S. crinila type, as figured by Parker (1917), 

 and consists of a posterior sheath, which lodges the base of a 

 pair of strong processes, serrated anteriorly, and tipped with 

 wliite. Anterior to the sheath is a movable hook-like structure, 

 bearing in front a strongly serrated membrane, greyish in 

 colour. The whole copulatory organ very closely resembles 

 that of S. delta. 



Female. — This differs from the male in the following 

 characters : — Eyes rather flat in front, giving the front a 

 rather prominent appearance. Front about three-fifths the 

 eye-width. A row of nine frontals beside frontal stripe, and 

 three larger ones immediately beside eyes. Lateral verticals 

 present and well developed. Thoracic chsetotaxy as in male, 

 except that apical scutellars are rather weaker. First femur 

 moderately hairy, tibia slightly longer than tarsus. Second 

 and third femora and tibiae hairless. No '' comb" on second 

 femur. 



Described from two males and two females bred from 

 decaying meat in Brisbane, February 1921. 



