Mr. J. R. Mallocli on Exotic Muscaridfe. 229 



short ; liypopleura with tlie usual hairs below spiracle. 

 Abdomen narrow, subcylindrical; upper hypopygial forceps 

 rather long, acute at apex ; basal steruite bare ; fifth 

 sternite with a deep V-shaped incision. Fore tibia with a 

 long fine median posterior bristle ; fore tarsus longer than 

 tibia; mid-femur with a series of long bristles on postero- 

 ventral surface; mid-tibia with four long posterior bristles ; 

 hind femur with long bristles on apical half of autero- 

 ventral surface, the series duplicated in part; postero- 

 ventral surface bare ; hind tibia with some long bristles on 

 apical half of antero-ventral and antero-dorsal surfaces, 

 some of them invading the anterior surface. Outer cross- 

 vein almost S-shaped ; veins 3 and 4 divergent at ajjices. 



Female. — Frons less than one-third of the head-width at 

 vertex, widened anteriorly ; a series of setulse descending 

 on parafacial below apex of second antennal segmeiit. 

 Legs with stouter and shorter bristles than in male, the 

 hind tibia with one antero-ventral and two antero-dorsal 

 bristles. 



Length 7-8 mm. 



Type, male, and allotype, north of Mt. Kenia, 18. ii. 

 1911, 8300 feet. Paratype, male, west of Mt. Kenia, 19-20. 

 ii. 1911, 6500-7250 feet (Z. J. Ander on). 



The African species Afydcea nemoralis. Stein, probably 

 belongs to the genus Spilaria, and may be separated from 

 the species listed in this paper by its having four pairs of 

 postsutural dorso-ventral bristles, and the cross-veins not 

 noticeably infuscated. Stein has placed his species as a 

 synonym of mulcata, Giglio-Tos, a Mexican species, but I 

 am inclined to doubt this. I have not seen nemoralis, Stein. 



Genus Idiopygus, nov. 



Generic characters. — Similar to Heiina^ R.-D. Differs in 

 having the superior and inferior hypopygial forceps of male 

 long and slender, and the fifth sternite very deeply cleft in 

 middle of posterior margin, giving it the appearance of 

 having two long latero-posterior processes, the general 

 habitus of the hypopygium similar to that of some species 

 of Coenosia and Pyyophora. The fourth visible tergite of 

 female is not chitiuised and transverse at apex, but depressed 

 and somewhat membranous, sometimes notched in centre of 

 posterior margin. The anterior intra-alar bristle is absent 

 or distinctly caudad of the anterior postsutural dorso- 

 central. Hypopleura either bare or with some minute hairs 



