from the Philippine Islands. 245 



Drosopliilidae. 



Drosophila ananassae Dolesch. 3 Bijdr. 56 The de- 

 scription is unmeaning, and even a colored drawing which I possess 

 does not aflPord any certainty aboiit the identification. — A single 

 specimen. 



Drosophila hypocausta n. sp. $ Q. Thorax brownish- 

 red above; pleurae and abdomen nearly black; legs brotvnish- 

 yellow, but femora and front coxae brown; \vings yellowish- 

 subhyal'ine. Length 2V2— 3 mm. 



Head brownish-red, including the antennae; cephalic bristles and 

 the arista black; thorax brownish-red above; pleurae and sternum 

 dark-brown; abdomen dark-brown, almost black, in one of the spe- 

 cimens slightly reddish at the base; halteres yellowish-red; legs pale 

 brownish-yellow; front coxae and all the femora, except the knees, 

 brown; a weak praeapical bristle on the hind tibiae; wings yellowish, 

 subhyaline; the costal vein reaches the fourth vein; the last section of 

 the fourth vein only a trifle longer than the preceding; it is parallel 

 to the third vein; the second and third veins are diverging; the interval 

 between their tips is about once and a quarter longer than the interval 

 between the tips of the third and fourth veins; the posterior crossvein 

 is a little longer than the last section of the fifth vein; first vein very 

 short, its tip a little nearer to the root of the wing than the anterior 

 crossvein. — Five specimens. 



Osciitidae. 



Oscinis dimorpha n. sp. $Q. — Black, fore part of the 

 front red; tip of the wings infuscated; 



$. Antennae red; legs reddish-yellow, except the hind femora 



and tibiae, which are brown. 

 Q. Antennae dark brown; legs brown, except the fore coxae, 

 the base of the tibiae and of the tarsi, which are pale 

 yellow. 

 Male. Head black, vertex and posterior part of the front shining 

 black, encroaching in the shape of an angle on the anterior half of 

 the front, which is ferruginous -red. Face and palpi reddish-yellow. 

 Antennae ferruginous-yellow; third joint rounded -oblong, arista micro- 

 scopically pubescent, yellowish at base. Thorax black, slightly grayish- 

 pollinose; scutellum with two pairs of bristles; the intermediate very 

 long. Abdomen black. Halteres reddish-yellow. Wings hyaline, veins 

 yellowish -brown; apex of the wing infuscated beyond the tip of the 



