1887.] 75 



stripe. The wings are slightly brunesceiit ; the legs in the male have the front tarsi 

 longer than the tibiae, and the three proximal joints more or less marked with white. 

 This genus was formed by Rondani for tlie reception of the above-mentioned 

 species, and as this had not been recorded as an inhabitant of Great Britain at the 

 time my " Annotated List of British AnthomyiidcB " was drawn up, I did not 

 include it. In my analytical table of the genera with widely separated eyes in both 

 sexes, which was published in the Ent. Mo. Mag., vol. xx, p. 50, the genus Chirosia 

 should have had its place between Mycofhaga and Chelisia. 



CHELISIA, Eond. 



C. TRICOLOE, Zett. 



This small and rare species bears a close general resemblance to C. mollicula, 

 Fall., so I have placed it in the same genus ; it must, however, be looked upon as an 

 aberrant species, for the male is destitute of the large and complicated genital pro- 

 cesses seen in C. mollicula, which form one of the characteristic features of the 

 genus. 



C. tricolor has very short (almost rudimentai-y) anal veins, so I cannot put it 

 into the last genus (Ckirosia), thoagh it would agree with its other characters. The 

 antennse are wholly black ; the arista is pubescent ; the tliorax is grey, marked with 

 two indistinct stripes ; the abdomen has the first and second segments yellow, and 

 the third and fourth grey, each segment being marked with two black spots. The 

 division between the yellow and grey segments is sharply defined, by which it differs rfrn-i 

 from C. mollicula, in which tlie hind segments, when nigrescent, are only partially Sept., 1887. 

 and irregularly so. 



I found a single male at Buckingham in August, 1884, and a single female 

 (which is a good deal larger than the male) at Conishead Priory, near Ulverston, 

 Lancashire, in August, 1886. 



SCH^NOMTZA, Hal. 



S. LITOBELLA, Fall. 

 Mr. W. H. Harris, of Cardiff, sent me a specimen of this little maritime fly in 

 1886, which he had found there. It may at once be known by its generic character 

 of having the first longitudinal veins shortened, so that the internal transverse veins 

 are placed considerably beyond the termination of the auxiliary branches of the first 

 longitudinal vein in the costa. The alulets are so small, that this species might 

 more properly be left among the Acalypteratce, where Meigen placed it in the genus 

 Sciomyza. 



Bradford: 1887. 



