2 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



related species in St. Vincent and another to the north of Dominica; 

 Pelagomyia illucens has a close relative in St. Vincent; and the re- 

 maining species have closest relationships with mainland South 

 and Middle American forms. 



Notes on color and pattern of eyes of several species, made on live 

 and recently killed specimens, have been furnished by George C. 

 Steyskal (see also figs. 8-13). 



Cyphomyiu dominicana, new species 



FlGTTKES 1, 7, 8 



Male. — Head mainly black; frontal triangle a sordid yellowish 

 brown, this color extending very slightly below bases of antennae 

 laterally ; face mostly with a dark blue, metallic sheen. Frontal triangle 

 with long black pile; face with dense pale yellow tomentum, thickest 

 laterally but, when viewed dorsally, obscuring most of the face; 

 some longer semi-erect yellow pile below and some scattered, mostly 

 black, long, erect hairs in the middle of the face; narrow occipital 

 orbits yellowish tomentose except on dorsal third, where the orbits 

 vanish; genae and lower occiput with erect whitish to pale yellow 

 hairs. Eyes uniformly but not thickly covered with long pile, almost 

 as long as first antennal segment, mostly black but some whitish 

 below. Proboscis yellowish brown, with pale hairs. Antennae black, 

 flagellum reddish brown toward base on inner surface, elongated, 

 tapering to terminal segment, which is in the form of a greatly atten- 

 uated cone, almost tubular, and ending in a small hair; flagellum 

 0.54 to 0.60 head width. 



Thorax mostly black, some brownish areas on pleura, especially 

 below wing base; mostly with dark bluish reflections; mesonotum 

 with appressed black and pale yellow, dense tomentum and fairly 

 abundant erect, long, mostly blackish pile; the black tomentose 

 coverings in the form of two broad median vittae that appear con- 

 fluent before the suture in most lights and two broad lateral post- 

 sutural vittae; scutellum with pale yellow tomentum and semi-erect 

 pile and with considerable long, erect pile as on mesonotum; pleural 

 pile and tomentum more whitish; a glossy band from front coxa to 

 notopleural suture. Scutellar spines on a level with scutellum, some- 

 what divergent, as long as scutellum, tending to become brownish 

 beyond base; hairs of spines long, mostly black dorsally and yellow 

 ventrally. Legs mostly black with some bluish reflections; knees 

 yellow; front and middle basitarsi yellow, becoming blackish apically; 

 second tarsomere of fore- and middle tarsi and hind basitarsus more 

 or less yellowish below and at base. Wings hyaline; veins brown; 

 stigma pale yellowish brown; second basal and anal cell each with 



