414 Professor Williston on the 



. 17. Urosophila, sp. ?. (PI. XIY., fig. 153, wing.) 



$ . Deep shining black. Front very broad, broader than long. 

 Antennae blackish ; third joint narrow and pointed. Face not 

 more than half the width of the front, gently convex in the middle 

 the narrow orbits, the inferior margin and the cheeks greyish 

 dusted. Legs, including the front coxae, wholly light -yellow. 

 Wings nearly hyaline ; third costal section a little longer than 

 the second. Length 2 mm. 



One specimen, '' Union Is.^ Oct.'^ 



^liMw^'*^ 18. Drosophila polUnosaj n. s-p. 



^^ $. Black in ground-colour, thickly pollinose. Front longer 



than broad, only a little broader above ; densely yellowish-grey 

 pollinose, with four rows of bristles, the median ones not extend- 

 ing quite as far as the orbital ones. Antennae reddish-yellow, 

 the third joint rounded, the arista with but few rays on the upper 

 side. Face greyish-pollinose, like the front, fiat or with a slight 

 carina above ; vibrissse present ; cheeks not broad. Thorax densely 

 pollinose, the mesonotum and scutellum yellowish-grey, the pleurse 

 more grey ; apex of the scutellum reddish. Abdomen black, yel- 

 lowish-grey dusted. Legs reddish-yellow. Wings nearly hyaline ; 

 anterior cross- vein situated before the insertion of the first vein ; 

 third section of the costal vein only a little shorter than the 

 second section Hsdteres yellow. Length 2 mm. 



Two specimens. St. Vincent. In all probability the 

 present species belongs among tlie Ephydrid^, but the 

 very flat face and the presence of vibrissge will lead one 

 to search for the species in this genus. The presence of 

 the additional row of frontal bristles, the few rsijs to the 

 antennal arista, the small carina, and the partial absence 

 of the anal cell are all characters out of accordance 

 with those of this genus, as well as the general colouring 

 of the species. 



19. Drosophila Umhata, n. sp. 



^ , $ . Head, thorax and legs yellow or reddish-yellow, but 

 little or not at all shining ; third joint of the antennae brownish ; 

 face carinate. Abdomen yellow, with a posterior black band to the 

 segments, the bands broader in the middle and narrow at the sides. 

 Wings distinctly clouded with blackish along the front border, 

 filling out the costa, marginal and submarginal cella, and reaching 



