114 C. R. Osten Sacken: Diptera 



male, he forgets to mention the broad black crossbands on the in- 

 cisures of the abdominal segments, which distinguish it from the female. 

 Seems to be a common species from the Philippines to Java. 



Psiiopiis longicornis Dolesch. 3^* Bijdr. 22 (Amboina). 

 Agrees with the copy of Doleschalls original drawing, which I possess ; 

 only in the description the word tibiis should be substituted for 

 tarsi s. May also be the same as P. crinicornis Wied. if the latter 

 has the gray cloud in the middle of the wings, which is not mentioned 

 in the description. (Conf. 0. S. Enumer. 48). My ($) specimen has, 

 on the upper side of the front tibiae, four erect bristles, and two si- 

 milar bristles on the upper side of the first joint of the front tarsi. 



Psilopus. A dozen of specimens in bad condition represent 

 several other species of the genus. 



JDiaphorus aeneus Dolesch. 1 Bijdr. 7, Tab. XII, f. 1. A 

 single male. The original colored drawing by Doleschall, which I 

 possess, convinces me that it is the same species. The eyes are se- 

 parated by a very narrow almost linear front: all the pulvilli, but 

 especially those of the front legs, are very large. The conspicuous 

 bristles at the end of the hypopygium prove it to be a Diaphorus in 

 the sense of Loew, Monogr. etc. II, 157. 



Diaphorus sp. $ $ With darker wings. than the preceding; 

 abdomen metallic-blue with golden -green incisures. Two damaged 

 specimens. 



Diaphorus maurus n. sp. $ Eyes of the male contiguous 

 on the front; pulvilli of the front legs enlarged; body brown, 

 with greenish-metallic reflexions; second abdominal segment 

 brownish-yellow ; legs brownish-yellow; wings infuscated. Length 

 374 — 4 mm. 



Face, as well as the small interocular triangle above the antennae, 

 whitish-hoary, although the ground-color is black; palpi brownish- 

 yellow; cilia of the inferior orbit pale whitish-yellow; antennae brownish, 

 third joint very short; arista inserted in an excision at its tip, and 

 therefore nearly apical. The ground color of the mesonotum is dark 

 metallic; dark purplish anteriorly, more or less covered with a delicate 

 brownish pollen; greenish posteriorly; scutellum metallic green or 

 coppery; pleurae black, grayish-hoary; abdomen brown, its second 

 segment brownish-yellow, except its posterior margin, which is brown. 



