I 



NEW MUSCOID FUES FROM THE ANDEAN MONTANYA |33 



basal half; venter paler. Legs pale yellowish, with black setulae and 

 bristles, the anterior and median tarsi distally somewhat infuscated. 

 Wings wholly clear, with a slight yellowish tint ; veins yellowish brown ; 

 anterior cross vein about at middle of discal cell, last section of fourth vein 

 twice as long as preceding section and without stump. Halteres white. 



Length: Body about 2.7 mm.; wing 3 mm. 



Guam Island (D. T. FuUoway), three specimens. 



Type, Cat. No. 18809, U. S. Nat. Mus. 



NEW MUSCOID FLIES, MAINLY HYSTRICIID>E AND 

 PYRRHOSIIN.4£ FROM THE ANDEAN MONTANYA 



By CHARLES H. T. TOWNSEND 

 (Continued from page 128) 



Parepalpus Coquillett. 



The following description is given of the generic characters of a single 

 specimen which I refer to this genus. 



General external characters of Gymnomma. Description is from male 

 only. Front of male at vertex rather more thzui eye- width; cheeks 

 nearly Iwo-thirds eye-height. Proboscis about one and one-third times 

 head-height, the geniculation being about in middle. Palpal bristlets 

 present. Third antenneJ joint about one and one-half times as long as 

 the elongate second. Second eiristeJ joint about three times as long as 

 wide. No ocellar bristles. There is an inwardly curved bristle close to 

 orbit, outside of fourth bristle of frontal row counting backward, which 

 evidently represents a doubling of frontals rather than a true orbital bristle. 



Three sternopleural bristles ; three strong postsutural bristles, with an 

 extra or supernumerary weaker one just in front of the anterior strong 

 one ; three strong postacrostichal and two preacrostichal bristles. Scutel- 

 lum with straight spinelike macrochaetae in a marginal and a transverse 

 discal row, all short except a long separated median pair in marginal row ; 

 two long strong lateral marginal pairs of ordinary macrochaetae, no apicd 

 pair. Abdomen a little wider than thoreix, ovcJ, arched or subglobose- 

 convex above ; second segment with a strong median discal pair of macro- 

 chaetae, a stronger median marginal pair, several very weak pairs between 

 these on median line, and two or three marginal at sides ; third segment 

 with one median discal pair, and a marginal row ; anal segment sparsely 



