NO. 1935. AIUSCOID FLIES FROM SOUTH AMERICA— T0WN8EXD. 325 



lowish-red. Wings faintly infuscated, veins blackish with more or 

 less definite linear smoky borders. Small crossvein narrowly black- 

 clouded. 



Type.— Cat. No. 15163, U.S.N.M. Female, November 22, 1910. 



DOLICHOSTOMA, new genus. 



Sarcophaga-like in facies of abdomen, but with the head characters 

 of Andinomyia described farther on. Head extremely long, trun- 

 cate-subconical, the parafacials almost as wide as eye-width. Eyes 

 thickly hairy. Cheeks fully twice as long as mean width, greatly 

 widened posteriorly, mean ^vidth rather less than eye-height. Fe- 

 male vertex about one and one-third times width of one eye, pair of 

 proclinate-divergent ocellar bristles, two proclinate and two diver- 

 gent orbitals in line in female. Frontal bristles descending low at 

 wideh^ divergent angle, outer short row of shorter bristles on para- 

 frontals. Structure of facial plate, epistoma, vibrissse, peristomal 

 bristles, facialia and their bristles, antennae, and arista quite same 

 as in Andinomyia, except that the second antennal joint is not quite 

 so elongate, arista is shorter with first and second joints both elon- 

 gate, and lower or oral profile of head is almost straight. Tliird 

 antennal joint rounded apically, slightly longer than second. Pro- 

 boscis is awl-like, slender and horny, part below geniculation about 

 as long as oral profile of head; palpi very long and slender, very 

 gradually and slightly enlarged apically. 



Three sternopleural and three postsutural macrochaetae; three lat- 

 eral pairs of scutellar macrochaetae, the two posterior ones equal and 

 very strong and the anterior one much shorter ; very short weak apical 

 pair, and a stronger longer widely separated discal pair, with a short 

 pair between them. Abdomen flattened, submarmorate, no median 

 bristles on first two segments, eight or ten weak marginal bristles 

 on third segment and one or two lateral discal ones; several discal 

 or submarginal and terminal ones on anal segment. Hind tibiae with 

 irregular bristles, claws of female nearly or quite as long as last tarsal 

 joint. Apical cell very narrowly open well before wingtip, fourth 

 vein prolonged in strong stump beyond apical crossvein, hind cross- 

 vein quite close to apical crossvein. 



Reproductive habit, almost certainly leaf-larviposition; uterus 

 probably strap-like, developing colored maggots. 



Type-species. — Dolichostoma alpine, new species. 



DOLICHOSTOMA ALPINA, new species. 



Length of body, 9 mm.; of wing, 7.5 mm. One female, Tirapata, 

 Peru, on the high puna of the Lake Titicaca region, about 13,000 feet, 

 January 28, 1910, on flowers of a dwarf species of Hypochoeris. 



