246 Transactions. — Zoology. 



short brown pedicel, but a large cinereous club. Abdomen 

 cylindrical, terminating in a short ovipositor. Abdomen 

 clothed with short black hairs. Legs short and rather robust, 

 dark-brown ; first joint of the tarsus about half as long as 

 the tibia and about double the length of the second joint ; 

 very few hairs on any of the joints. Wings smoky. Second 

 longitudinal and costa dark-brown, the others lighter ; distinct 

 indication of auxiliary vein, but it does not join the costa; 

 first longitudinal rather more than half the length of the 

 wing, bending down at the junction of the transverse vein,. 

 which is only one-fifth of the length of remaining portion of 

 first longitudinal ; basal portion of second longitudinal about 

 one-third of the length of vein, only slightly bent, joins 

 margin before the apex of the wing ; third longitudinal very 

 indistinct, arising from second longitudinal at a little beyond 

 a third of length of basal portion, cannot be followed more 

 than a third of the distance to the margin ; fourth longitudinal 

 distinct, anterior branch only slightly bent, posterior branch 

 almost at right angles, disappears before reaching the posterior 

 margin of the wing. Posterior angle of the wing pronounced. 

 Surface covered with a minute brown pubescence. 



I have only one specimen of this lai'ge distinct species^ 

 taken at Lincoln in December, 1893. 



Camioylomyza robusta, n. sp. Male. Antennae, 0-024 ; wings,. 



0070 X 0031 ; body, 0-055 x 0-011. 



Antennae black, 2 -f 11 jointed ; flagellar joints almost 

 globose ; pedicels about a quarter the length of the joints ; 

 all the joints are covered with hairs, but there are no 

 verticils ; subterminal joint oval, and longer than the others, 

 which are slightly compressed longitudinally ; terminal joint 

 much smaller than the others, apparently without a pedicel. 

 Thorax black, clothed sparingly with light-coloured hairs. 

 Scutellum black. Halteres with short thick brown pedicels, 

 ending in rather a large oval cinereous club. Abdomen very 

 dark brown, covered with scattered black hairs. Legs light- 

 brown ; femora about the same length as the tibiae, thick, 

 clothed sparingly with light-coloured hairs. Wings with a 

 distinct anal angle, rather smoky, covered with black hairs. 

 First longitudinal less than half the length of the W'ing, part 

 beyond point of origin of transverse vein about four times tlie 

 length of transverse vein ; second longitudinal slightly bent, 

 ending a very little before apex of the wing, very distinct ; 

 third longitudinal very indistinct, arising a little beyond 

 middle point of basal portion of second longitudinal ; both 

 branches of fourth longitudinal distinct, but the posterior 

 branch does not reach the margin. 



Lincoln, February. 



