273 Mr. J. R. Mnlloch on Exotic Muscaridje. 



Darwinomyia univittata, sp. n. 



Male and female. — Head yellowish red, occiput infnscatcd, 

 the iuterfroiitalia iu female red ; orbits greyish ; third aii- 

 teuual segment slightly darkened apically ; palpi yellow. 

 Thorax yellowish red, mesoiiotura with a broad black cen- 

 tral vitta ; propleura below, mesopleura, and pteropleura 

 blackened ; centre of metanotum black. Abdomen black or 

 fuscous, male with a lutcous mark on each side of basal 

 (second) tergite. Legs reddish yellow, fore femora, apical 

 half of hind femora, and the tarsi infuscated in both sexes, 

 hind tibiffi infuscated basally in male. AVings clear, yellowish 

 at bases. Calyptrse and halteres yellow. 



Male. — Eyes shoit-haired, separated by little more than 

 width of anterior ocellus ; orbits setulose almost to anterior 

 ocellus; parafacials linear; cheek higher than width of third 

 antennal segment; arista with very short pubescence; palpi 

 slender. Thorax with three pairs of very long presutural 

 acrostichal bristles ; prealar long; postsutural dorso-ceutral 

 bristles 4; hypopleura with some fine hairs on upper margin 

 in front of spiracle ; venter of scutellum bare. Abdomen 

 ovate, basal sternite bare ; ventral hairs very long ; hypo- 

 pygiuni small ; fifth sternite with a small rounded posterior 

 excision. Fore tibia with one antero-dorsal and one posterior 

 bristle ; fore tarsus slender, longer than tibia, without long 

 sensory hairs along posterior side of basal segment ; mid- 

 femur with a group of erect fine hairs before middle on 

 anterior surface, and beyond them the same surface is fur- 

 nished with microscopic erect hairs which become stronger 

 towards the apex, finally assuming the proportion of short 

 spines, same femur with two strong bristles basad of middle 

 and about seven weaker bristles on apical half of postero- 

 ventral surface ; mid-tibia with four or five postero-dorsal 

 and four or five postero-ventral bristles; tarsus normal, hind 

 femur slightly curved, with about five bristles on apical half 

 of antero-ventral surface, the postero-ventral surface bare ; 

 hind tibia curved, the calcar distinct, antero-ventral, antero- 

 dorsal, and postero-dorsal surfaces each with a series of long 

 hairs, those on the antero-dorsal surface strongest, a])ical 

 postero-dorsal bristle indistinguishable. Wing slightly 

 pointed ; outer cross-vein slightly curved. 



Female. — Frons one-third of the head-width, orbits narrow; 

 setulaj continued considerably above vibrissje. Thoracic 

 bristles much shorter and stronger than in mule ; genital 



