272 Mr. C. G. Lamb on Exotic Helomyzid^e, ttr. 



black above, bliick below, but wi.lcly bordered witli yellow, so 

 that liiiid jowls and niouth-margiu are all that colour; eyes 

 like C. leptogaster, with sinuate hind mar<2,in. 



Thorax : dor.^um ?ubsliiiiing black, with uniform shallow 

 minute shagreening ; entirely covered with elegant pale 

 yellow hairs, except for two lines, confluent in front and 

 abbreviated about halfwaj^, which are bare (these are best 

 seen with oblique light); the dorsum is much like lepto- 

 gaster. Pleura like the dorsum in front, but with silvery 

 white hairs, longest below ; the sclerites over the hind leg 

 are all smooth, hairless, and very shining; just over the 

 callus is a rather bright orange narrow bar, and a dark orange 

 one is just visible on the top of the sternopleura. Scutellum 

 all rather shining orange, bristled as in leptogaster. 



Wings slightly smoky, especially broadly so at tip between 

 costa and vein 4 ; the latter is parallel to 5 up to about its 

 distal titth, when it makes a sudden slight bend upwards; 

 veins brown, extreme base of wing orange. Haltere with 

 snow-white head and slightly browni-h stalk. 



Legs all pale straw-coloured, a little whiter proximally on 

 the femora, with no sign of any rings or darkening. 



Abdomen like the thorax in colour and punctation, but the 

 liairs are brownish ; the shape is more wasp-like than in 

 leptogciiter. 



Size 5 mm. 



Ceylon : Peradeniya {A. Rutherford, Lnp. Bur. Ent.). 



LOXOCERA, Mg. 



In the Kilimandjaro-Meru Expedition Reports (x. 5, p. 1 93) 

 Speiser gives a table of the known African members of this 

 geims. Of these, L. dispar, Bezzi, is apparently quite 

 distinct, having a black triangle, sternopleura, and front 

 femora. He separates the others on the presence or absence 

 of thoracic stripes and their position: thus, L. rvfa, Loew, 

 is given as stripeless, L. lateralis, Lw., and L. viacrogrammuy 

 Speiser, are striped in different ways. 



In the Camb. Coll. are eleven specimens of a red Loxocera 

 of the latter group. They are evidently closely related, and, 

 apart from thoracic marks, differ only in the degree of undu- 

 lation of the fourth vein between the cross-veins, and the angle 

 between the last cross-vein and the fifth ; in such cases 

 where the veins are wavy or bent (as is the cross-vein here 

 concerned) the angle in question and the amount of curvature 

 of the veins is always a little uncertain. Apart from this 

 and the colour of the thorax, neither of which are correlated 



