272 Mr. C. G. Lamb on Exotic Helomyzidse, &e. 



black above, black belou', but witlel j bordered vvitli yellow, so 

 tliat hind jowls and mouth-margin are all that colour ; eyes 

 like C. leptogaster, with sinuate hind margin. 



Thorax : dorsum subshining black, with uniform shallow 

 minute shagreening ; entirely covered with elegant pale 

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

 abbreviated about halfway, which are bare (tiiese 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 fifth, when it makes a sudden slight bend upwards ; 

 veins brown, extreme base of wing orange. Haltere with 

 snow-white head and slightly brownish 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 

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

 leptogaster. 



Size 5 mm. 



Ceylon : Peradeniya (A. Rutherford, Imp. 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 

 genus. 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. riifa, Loew, 

 is given as stripeless, L. lateralis, Lw., and L. macrogramma^ 

 Speiser, are striped in different ways. 



In the Camb. CqII. 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 



