NEW MUSCOID FLIES FROM THE ANDEAN MONTANYA 87 



second segment with marginal row, one lateral discal, and a median discal 

 bunch of six or eight ; third segment with a marginal row which becomes 

 double at sides in about three discal bristles, and with a median transverse 

 bunch of eight ; anal segment beset with macrochaetae on posterior two- 

 thirds. Abdomen swollen, much broader than thorax, broad-oval in out- 

 line from above, abruptly narrowed apically. Ventral plates with short 

 spinelike macrochaetae. 



Reproductive habit, larviposition of colored maggots. 



Type, Eujurinella abdominalis, new species. 



Eujurinella abdominalis, new species. 



Length of body, 9.5 mm.; same to ends of spines, 10.75 mm.; of 

 wing, 9 mm. One female, Uruhuasi Bridge, San Gabaui Ceinyon, about 

 6,500 feet, February 3, 1910, on flowers of Baccharis sp. 



Coloration is closely similar to that of Corpulentosoma cornutum, dif- 

 fering as follows : The dark pareifrontals show a thin silvery pollen in 

 oblique lights. First two antennal joints reddish-yellow, the third joint 

 brownish but largely suffused with yellowish. Palpi pale yellow, with 

 fciint reddish tinge. Thoraix blackish in ground color, thinly silvery ; scu- 

 tellum pale reddish-yellow, thinly silvery. Abdomen and legs light red- 

 dish or rufous, the abdomen of a slightly deeper shade and with faint 

 silvery bloom in oblique lights. Wings wholly infuscate. Tegulae white, 

 the front scale smoky. Thoracic vittae fairly heavy. 



Type, TD3955 (fly, dissection of uterus, slide of maggots). 



This species has the same coloring and habitus as that of Corpulento- 

 soma cornutum, Eucorpulentosoma simile, and Epalpellus corpulentus, 

 all inhabiting the Uruhuasi region. 



Eucorpulentosoma, new genus. 



Bearing much resemblance to Corpulentosoma, so much so that its 

 female might easily be mistaken as belonging with the male of that genus. 

 The truly spinelike macrochaetae of abdomen, with spines on venter and 

 on disk of scutellum, and the absence of the facio-orbital bristle will at 

 once distinguish it from that genus. Description is from female only. 

 Third antennal joint of female considerably widened apically, rounded- 

 subtruncate, fully twice as long as the weakly elongate second joint. 

 Second aristal joint well elongated, the arista conspicuously geniculate. 

 Female front at vertex about equal to eye-width, widening evenly into 

 face which is almost tv^nce that width below. Cheeks about as long as 



