Mr. J. R. Malloch on Hwotic Muscaride. 167 
the area between the dorso-centrals; postsutural dorso- 
centrals 3. Abdomen short, narrowly ovate, fourth tergite 
slightly longest. Fore tibia unarmed at middle; mid pair 
of legs lacking in type ; hind femur with one stout preapical 
antero-ventral bristle; hind tibia with one antero-ventral 
and one antero-dorsal bristle, the apex simple. Fourth 
wing-vein slightly curved forward. 
Length 4 mm. 
Type, Northern Nigeria, Zungeru, 15. xi. 1910 (Dr. J. W. 
Scott Macfie). Named in honour of the collector. 
Limnophora andersoni, sp. n. 
Male.—Black, shining, with whitish pruinescence. Head 
black, interfrontalia deep black ; lower part of orbits, 
parafacials, face, and cheeks shining white pruinescent. 
Thorax with the usual three black spots in front of suture 
confluent, leaving only two small spots in front of suture 
and the lateral margins white pruinescent ; the vittze behind 
suture confluent, only a small portion of disc in front of 
scutellum greyish; scutellum black. Dorsum of abdomen 
with first segment except apex, a pair of large narrowly 
separated subtriangular spots on second and another on 
third segments, and a less clearly defined central spot 
on fourth segment black. Legs black. Wings hyaline. 
Calyptre whitish yellow. Halteres yellow. 
Kyes with very minute hairs; frons at narrowest part a 
little wider than distance across posterior ocelli; inter- 
frontalia distinct on its entire length; orbits linear, each 
with about six bristles on anterior half and no setula 
opposite anterior ocellus; arista with very short hairs; 
vibrissal angle slightly produced. Presutural acrostichals 
in four series ; postsutural dorso-centrals 3; anterior intra- 
alar absent, the posterior one weak. Abdomen elongate- 
ovate ; incision in fifth sternite very deep. Fore tibia 
unarmed at middle; mid-tibia with one posterior median 
bristle ; hind femur with 4 or 5 bristles on apical half of 
antero-ventral surface ; hind tibia with one antero-ventral 
and one antero-dorsal bristle, the apical ventral bristle 
curved. Fourth vein distinctly curved forward at apex. 
Female.——-Similar in colour to the male, but the dorsum 
of thorax has more distinct vitte, these being brown on a 
black ground. 
Frons at vertex one-third of the head-width. Chetotaxy 
of thorax as inmale. Apical genital segment with numerous 
short spiny hairs. 
