No. XIX.— DIPTERA : LONCHyEIDtE, SAPROMYZID^, EPHYDRID^, 



CHLOROPIDvE, AGROMYZID^. 



By C. G. Lamb, M.A., B.Sc, Clare College, Cambridge. 



(Plates 15, 16 and Text-Figures 1—33.) 



(Communicated by Peofessoe, J. Stanley Gardiner, F.R.S., F.L.S.) 



Read 20 June, 1912. 



Lonchseidse, 



LoNCH^A, Fallen. 

 Lonchcea Fallen, Dipt. Suec, Ortal., (1820), p. 25. 



1. Lonchcea splendida Loew, Beschr. Europ. Dipt., iii. p. 292. 



Several specimens of this fine species were collected. It is known from the Medi- 

 terranean Region. 



Localities. Seychelles. Bird Island, VII. 1908 (Fryer). Dennis Island, VIII. 1908 

 (Fryer). Mah^ : Cascade Estate, about 800 ft. and over, 1908—9. Praslin : Cotes d'Or 

 Estate, XL 1908. 



2. Lonchcea plumata, n. sp. 



This is a black species with black legs ; the calypters are pale and pale-haired ; there 

 is a long terminal abdominal segment in the t like that of L. incequalis, Loew. 



$. The whole insect is uniformly black, including the legs. 



Head (PI. 15, fig. l). Frons nearly parallel-sided, slightly narrowing from the vertex 

 to the front fronto-orbital bristle. The vertex and the narrow eye-margins as far as the 

 insertion of the fronto-orbital bristles are very shining. The rest of the frons (including 

 the lower part of the eye-margins) is dull, but the space below the lunule and between 

 the antennal bases is covered with shining dust. The lower eye-margins are black. 

 Labrum just visible in front, antennal fovea? shallow but evident. The face widens rapidly 

 from the frons to the mouth. 



Eyes large, very long-oval in profile, bare. 



Antennae with second joint somewhat greyish, third joint long and laterally com- 

 pressed, slightly concave in front in side view with a rounded tip, about four times as 

 long as broad, with tip extending almost to the mouth margin. Arista pale and thickened 

 SECOND SERIES— ZOOLOGY, VOL. XV. 39 



