Mr. J. R. Malloch on E-xotic Muscaridae. 23L 



Male and female. — Black, subopaque, densely grey pruiii- 

 escent. Head entirely black. Thorax with four brown 

 vittge anteriorly and a central one posteriorly, the latter 

 extending over disc of scutelluin. Abdomen with a pair of 

 fuscous spots on each tergite from 1 to 4 inclusive, those on 

 2 and 3 much larger than the others ; apices of processes of 

 fifth sternite yellowish, glossy. Legs black, basal two-thirds 

 of mid and hind femora and the extreme knee-joints in male 

 reddish yellow ; the mid and hind femora, except at apices 

 above, base of fore tibia, and nearly all of mid and hind 

 pairs reddish yellow in female. Wings clear, three con- 

 spicuous black spots on disc, one on inner cross-vein, and 

 one on each extremity of outer cross-vein. Calyptree and 

 halteres yellowish. 



Alale. — Narrowest part of frons about twice as wide as 

 distance across posterior ocelli ; three bristles on anterior 

 third of each orbit; arista plumose. Thorax with three 

 pairs of postsutural dorso-central bristles ; anterior intra- 

 aiar present ; sternopleurals 1 : 2. Abdomen subcyliudrical, 

 fourth tergite with strong bristles at apex and middle; fifth 

 very short, bare in centre ; sixth very long, bulbous, with 

 many setulse ; superior and inferior forceps very long, the 

 superior pair slender, the inferior pair dilated apically; 

 third and fourth sternites very short and broad, processes 

 of fifth very long, tapered to a point, directed slightly down- 

 ward at apex. Bristles at apex of processes of mesosternum 

 flexed at apices. Fore femur with strong bristles on entire 

 surface postero-ventrally ; fore tibia with remarkably long 

 dense bristly hairs on entire length of postero-ventral and 

 ventral surfaces ; mid-tibia with two posterior bristles ; 

 basal segment of mid-tarsus dilated at apex and aimed with 

 a tuft of dense brown hairs at tip, the posterior surface 

 with some long setulose hairs ; hind femur with an entire 

 series of long bristles on antero-ventral surface ; a group of 

 short erect bristles at base on posterior surface, two erect 

 bristles which are closely placed at middle, and a comb-like 

 series of about thirteen short bristles at apex on postero- 

 ventral surface; hind tibia very conspicuously dilated at or 

 slightly beyond middle, the dilated portion compressed, 

 furnished with rather dense hairs on anterior surface, and 

 with a few short bristles, the apex slightly produced and 

 with two long bristles under tip ; anterior surface of basal 

 segment of hind tarsus with some long setulose hairs. 

 Outer cross-vein slightly curved. 



Female. — Frons over one-third of the head-width ; each 



