G64 Mr. J. R. Mallocli 07i E^votic Muscaridse. 



LXXYl,— Exotic Muscaridffi {Dipiera).—lX.'^ By J. E. 

 Malloch, Bureau of Biological Survey, Washingtok^ D.C. 



Subfamily Phaoniinje. 

 Genus Ophyra, R.-D. 



The members of this genus are very widely distributed, 

 and there is some doubt in my mind as to the distinctness 

 of some of the described species. I suspect that several that 

 are now listed as distinct will ultimately fall as synonymous 

 with some of the older species. In this paper I present a 

 key to the species in the British Museum material now 

 before me, with some records of their distribution. 



Key to Males. 



1. Palpi rufous-yellow ; hiud tibia with short fine 



setalose hairs on antero-dorsal surface, one 

 long postero-dorsal bristle beyond middle, 

 and two short antero-ventral bristles ; 



calyptrse yellow cenesceiis, Wied. 



Palpi black 2. 



2. Hind tibia verj- conspicuously curved, furnished 



on ventral surfaces with soft, erect, black 

 hairs which are longest at base of series, 

 just before middle of tibia ; mid-femur 

 with two series of short spines near base on 



ventral surface ; calyptrae fuscous leticostoma, Wied. 



Hind tibia straight or very slightly curved, 

 and without hairs as above described ; mid- 

 femur with at most one series of short 

 spines of bristles near base on ventral 

 surface 3. 



3. Apices of segments of fore tarsi narrowly 



yellowish or whitish ; mid-femur with 

 some very fine hairs near base on postero- 

 ventral surface, without short spines ; hind 

 tibia straight, usually with one antero- 

 dorsal and three postero-dorsal bristles, and 

 some long setulose hairs on apical half of 

 antero-ventral and postero-ventral surfaces, 



more bristle-like on the former chalcoyaster, Wied. 



Fore tarsi black; mid-femur with one or more 

 short spines or bristles on ventral surface 

 near base ; eye with a slight but distinct 

 rounded emargination at or near middle of 

 posterior margin 4. 



* For Part VIII., see Ann. & Mag. Nat. Hist. (9) x., December 1922, 

 pp. 573-587. 



