NEW MUSCOID FUES FROM THE ANDEAN MONTANYA 169 



marginzJ bristles, the apical pair cruciate. Abdomen subcylindricai, the 

 first two segments yellow, darkened centrally ; third segment blackish 

 above, with diffuse yellowish spot at apical angles, the following segments 

 entirely black; vestiture of sparse, evenly distributed, fine black hairs; 

 venter yellow. Wings hyaline, rather broad, rounded at apex; veins 

 brown ; costal margin finely and densely spinulate. Legs slender, pale 

 yellow ; anterior tibiae with moderate preapical bristle ; middle tibiae with 

 long apical and preapical bristles ; hind tibiae broadened, with long deli- 

 cate bristle well removed from apex. 



Length : Body, about 2 mm. ; wing, 1 .8 mm. 



Mountain View, Hawaii, reared from spider's eggs, in egg-sacks on 

 sugar cane, August 22, 1912 (Otto H. Swezey). 



Type, Cat. No. 19071, U. S. Nat. Mus. 



This insect, by its pale blue-gray pruinose coloration, reminds one of 

 the agromyzid genus Leucopis. The extraordinary development of the 

 macrochaetae of the head and thorax gives this form a very anomalous 

 appearance. 



NEW MUSCOID FLIES, MAINLY HYSTRICIID>E AND 

 PYRRHOSIINi^ FROM THE ANDEAN MONTANYA 



By CHARLES H. T. TOWNSEND 

 (Continued from page 1 60) 



Jurinella andicola, new species. 



Length of body, 9.5 to 10 mm. ; of wing, 9 to 9.5 mm. Two males 

 and two females, Chosica, about 2,700 feet. May 8 and 9, 1913, on 

 flowers of Mikania sp. ; one female, Santa Eulalia, about 3,700 feet, 

 July 5, 1913, on flowers of Buddleia occidentalis ; and two males. 

 Verrugas Canyon, about 5,400 feet, July 2 and 23, 1913, on same 

 flowers. 



Head except front light colored, wath very pale golden pollen, facieJ 

 plate less golden. Parafrontals blackish under the golden pollen. Fron- 

 talia, first two antennal joints, and lunula fulvous, third joint and arista 

 brownish. Palpi yellow. All head pile golden, except black hairs of 

 parafrontals. Mesoscutum and pleurae blackish, quite thickly light golden 

 pollinose and of same shade as parafrontals, four narrow vittae of usual 

 pattern. Scutellum and abdomen shining black, with a bluish luster ; no 



