LAMB— DIPTERA : LONCH^ID^, SAPROMYZID^, EPHYDRID^, ETC. 347 



56. Agro)nyza sp. ? 



A single specimen of another species is in the collection, but it is not in sufficiently 

 good condition to warrant a full description. 



The insect is in form, size, etc. very close to the last species ; but it is of a moderately 

 shinino- and of a true black colour, including halters and legs. The head is black and 

 very similar to the last species, but the third antennae joint is small and slightly pointed, 

 and the arista is bare and shorter than usual. The chsetotaxy cannot be given owing to 

 the damaged condition. The wing venation is shown in Fig. 33 ; the wings are slightly 

 milky with yellow veins and a fine dark costal line. 



Locality. Seychelles. Mahe: Mare aux Cochons district, 1500—2000 ft, I.— II. 1909. 



Fig. 33. Ayroinyza, sp. ?, wing. 



57. Agromyza sp. ? 



A second single imperfect specimen. No description can be given in any detail, but 

 the insect has a remarkable mouth-margin, produced each side into a pointed lobe, which 

 tei'minates in a long slightly curved white spine. The insect is quite black ; wings pale 

 with brown veins ; discal cross-vein just about opposite the junction of the first vein with 

 the costa, and the relative position of the' two cross-veins just about as shown in Fig. 33 ; 

 though the terminal section of the fifth vein is shorter than the part bordering the discal 

 cell, instead of being of about the same length. 



Locality. Chagos Islands : Salomon Atoll, lie de Passe ; bred from mines in Sccevola 

 Koenigii (1905). 



Leucopis, Meigen, 

 Leucopis Meigen, Syst. Beschr., xi. (1830), p. 133. 



58. Leucopis griseola (Fallen), Dipt. Suec, Agroniyz., (1823), p. 8 [^Lnthomyza]. 



There is a fairly long series of a species of this genus ; they exhibit no structural 

 differences from the above species, but are on the average somewhat smaller in size, being 

 from 1^ to IJ mm. long. The legs are not quite so definitely coloured and the third 

 antennal joint is in most cases slightly larger. It is impossible to separate the specimens 

 satisfactorily from the members of the series of L. griseola in the Cambridge Museum. 



Localities. Seychelles. Silhouette: Mare aux Cochons plateau and forest above, 

 IX. 1908; Mahe: country above Port Glaud, 500— 800 ft., 5. XI. 1908; Port Victoria, 

 XII. 1908; Cascade Estate, about 1000 ft. ; Anonyme Island, I. 1909; marshes on coastal 

 plain, Anse aux Pins and Anse Royale, I. 1909. Also known from the Canary Islands. 



