OF WASHINGTON, VOLUME XVI, 1914 93 



males standing in U. S. Museum collection under Leucostoma 

 undetermined specifically, bearing label Cache County, Utah, 

 J. M. Aldrich. Species belonging to this genus are said to be 

 parasitic on beetles of the genus Cassida in Europe. 



Linnaemyia fulvicauda n. sp. 



Resembles hcemorroidalis Fall, but differs as follows: Cheeks black, 

 palpi black, not flattened transversely when viewed from front. Fourth 

 segment of abdomen pure orange yellow, front and superior occiput usu- 

 ally golden pollinose. Third antennal joint rounded at apex. Length 

 8 to 9 mm. Female, frontal vitta dark brown to blackish, sides of front 

 thinly sprinkled with black hairs, and covered with golden pollen which 

 extends downwards on parafacials around border of eyes and also to supe- 

 rior occiput; remainder of face whitish pollinose excepting facial ridges 

 which are bordered on inner side with blackish. Antennae brown, basal 

 joints black. Third joint (fig. 6a) about twice length of second, straight 

 or slightly concave on anterior border; apex broadly rounded. Arista 

 rather slender, black, second joint about as long as broad. Eyes rather 

 densely hairy. Cheeks distinctly black, clothed with bristly hairs. Palpi 

 black, linear. Proboscis about as long as head height, blackish, chitinized 

 on intermediate third. 



Thorax gray, marked with four distinct black vittse. Scutellum rounded, 

 black, a faint yellowish tinge at apex. Dorso-centrals three, sternopleu- 

 rals three. Abdomen ovate, three basal segments black pseudomaculate 

 with gray. Second and third bearing- discals and marginals. Fourth, 

 dorsally, pure orange yellow slightly yellow pollinose. Genitalia retracted, 

 yellow. Wings slightly grayish. Veins yellowish. Third vein bristly half 

 way to small cross vein. Bend of fourth appendiculate; apical cell open 

 in costa. Legs black including coxae, hind tibia? not ciliate, middle tibiae 

 bearing from two to five strong macrochaetse on front side. Angle of hind 

 crossvein 115 degrees in four specimens, enters fourth vein close to bend. 



Male differs as follows: Third antennal joint distinctly convex on front 

 border (fig. 6), nearly two and one-half times length of second. Yellow 

 pollen of front does not usually extend to parafacials. Eyes more densely 

 hairj-. Palpi brownish. Hypopygium exerted, doubled forward, entirely 

 yellow. Apical cell more narrowly open in costa. Front in both sexes of 

 about same width, i.e., three-fourths that of eye. 



Described from five specimens, male and female, reared from 

 Remigia repanda Fabr., by T. H. Jones from specimens taken at 

 Aibonito and Rio Piedras, Porto Rico. Issued February 3 to 23, 

 1912. Type a female. 



Compsilura oppugnator n. sp. 



Female: Black and gray, wings hyaline. Length 7 mm. Front about 

 two-thirds as wide as eye, vitta dark brown, parafrontals golden \vllo\v 



