414 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



BELVOSIOMIMA FOSTERI, new species. 



Length of body, 11 to 12 mm.; of wing, 8.5 to 9.75 mm. Two 

 females and one male, Sapucay, Paraguay, February (W. T, Foster), 



Rufous in general ground color. Head luteous, including frontalia, 

 the whole of face silvery-white, the front and cheeks showing less so. 

 Antennae and palpi rufous, the third antennal joint shaded with 

 blackish on upper edge and tip especially in male. Mesoscutum 

 blackish except hind margin, thinly yeUowish-gray pollinose, with 

 four vittae, and a fifth one behind suture. Scutellum more or less 

 completely luteous or rufous. Abdomen thickly pale gold pollinose 

 on whole of anal segment and very narrow bases of second and third 

 segments, the pollen of third extending more thinly over all of seg- 

 ment except a broad hind border, varying with light incidence, and 

 that of second similarly still more thinly extended. Legs dark 

 brown, tarsi black. Wings slightly infuscate, tegulae very pale 

 yellow. 



Holotype.—C&t. No. 19607, U.S.N.M., female. 



Family CROCUTIDAE. 



CALPODOMYIA, new genus. 



Genotype. — Calpodomyia linearis, new species. 



Very small. Female only described. Eyes very large, taking up 

 nearly the entire area of the head in profile, only the front showing as 

 a rim outside their borders: bare, descending even lower than 

 vibrissae. Parafacials and cheeks linear. Front and face of equal 

 width, conspicuously less than eye-width, about four-fifths of same. 

 A well-marked median facial carina present, formed like a ridge of a 

 roof. Oral margin cut off, inverted broad V-shape, the median notch 

 higher than vibrissal insertion, the carina running uniformly from 

 notch to insertion of antennae. Antennae closely approximated, 

 inserted above eye-middle; second joint short, third about three and 

 one-half times as long as second. Aiista thickened on less than basal 

 half, microscopically short-pubescent. Frontalia broad, normally 

 occupying fully one half width of front. Frontal and facial profiles 

 both curved or bulged, the former more prominent. Weak pair of 

 proclinate ocellars. Two proclinate and two reclinate fronto-orbitals. 

 Two verticals, the outer one weak. Frontals descending to base of 

 third antennal joint. Proboscis very short; palpi short, widened 

 apicaUy. Facialia with about three short bristles above vibrissae, 

 peristomals about same number and size. Scutellum subtriangular, 

 with three lateral macrochaetae, the hindmost longest and divaricate; 

 no discal, no apical. Macrochaetae of abdomen only marginal. 

 Femora rather broad; claws very short. Apical ceU closed in margin, 

 ending just before wingtip. Cubitus curved, without wrinkle. Hind 



