CAENACANTHA, 59 



pair far removed from that of the two posterior pairs. 

 Wings much longer than the abdomen ; discal cell trape- 

 zoidal, on the upperside contiguous with the mediastinal 

 cell (stigma) and emitting three longitudinal veins towards 

 the margin. 



4. Caenacantha bipartita, n. sp. 

 (Plate 5, fig. 1, la and lb). 



Ferruginea ; antennarum stylo , puncto ocellari, rostro , palpi, 

 scuteUi parte posteriori et abdomine nig ris ; alis Jlavescentibus , 

 macula subapicali nigro-fusca. — Q. Long. 9,5 mm. 



Ferruginous ; style of the antennae , ocellar point , rostrum 

 and palpi black. Thorax covered with a sericeous fulvous 

 toment, provided with a narrow black stripe along the middle 

 of the back , and laterally with a similar stripe extending 

 from the shoulders to the base of the wings ; when held in 

 a certain direction three longitudinal sericeous bands are 

 visible, of which the central one is divided by the black 

 mesial stripe ; the breast is blackish. The hind part of the 

 scutellum and the spines are shining black; the smaller 

 posterior spines have yellow tips. Abdomen dull black , the 

 sides of the basal segments rufous. Legs and halteres red- 

 dish-yellow. Wings hyaline, with a yellow tinge; veins 

 and stigma reddish-yellow; before the tip a large, not 

 distinctly limited, darkbrown spot is present. 

 A 9 from Bogota (v. Lansberge). 



5. Negritomyia bilineata, Fabr. 



Siratiomys bilineaturn , Fabr. Syst. Antl. 79. 5 ; — Cli- 

 tellaria bivittata , Wied. Auss. Zweifl. IL 46. 1 ; — Ephippium 

 angustum , Macq. Suit, a Buff. Dipt. L 252. 2 ; — Bhophio- 

 cera spinithorax , Macq. Dipt. ex. supp. 3. 17. 3; — Clitellaria 

 tenebrica, Walk. List Dipt. Brit. Mus. III. 522; — Ephip- 

 pium spinigerum, Dol. Nat. Tijdschr. Ned. Indie, X. 407. 

 13. pi. 9 f. 2. 



Notes from tlie Leyden Museum, Vol. VII. 



