224 [October, 



what semilunar shape ; anal segments of the male small and incurved ; wings clear 

 with yellowish roots, fourth long veins bent at a rather obtuse angle ; apical cross 

 vein curved, and terminating near the apex of the wing ; outer cross vein oblique 

 and straight ; legs black, tibiae all furnished on their outer surfaces with a number of 

 long, strong, irregular bristles. 



The Ecv. E. N. Bloomfield sent three specimens of this fly for 

 my inspection in July last, which had been taken at Ipswich by Mr. 

 Claude Morley. I had also the pleasure of examining another (by 

 the kindness of Mr Grimshaw) belonging to the Museum of Science 

 and Art. in Edinburgh, which was captured by the Rev. Alfred Thornley 

 at Treswell in Nottinghamshire, and presented by him to the Museum. 

 The Keeper of the Natural History Collection (Dr. Traquar) kindly 

 allowed me to describe it. 



The genus PJtorocera contains a number of species which vary so 

 much in many of their characters, that they have been separated and 

 placed in different subgenera by Rondani and Brauer and Ber- 

 genstamm. Only one species has been referred by these authors to 

 the sub-genus CampylochcBta, viz., P. schistacea, Mgn., which, like P. 

 ineerta, Mde., has hairy cheeks and a bent arista, &c. ; it differs from 

 it, however, in many other characters, having pale palpi and tibiae. 



Bradford : September 6lh, 1897. 



ON THE BEITISH SPECIES OF THE GENUS OBEYS OPS (FAMILY 



TABANIDJi). 



BT ERNEST E. AUSTEN. 



According to Mr. G. H. Verrall's "List of British Dipfera" 

 (1888), our native species of the handsome but bloodthirsty flies, 

 known as Chrysops, are three in number, namely, Chrysops ccecutiens, 

 L., quadraius, Mg., and relictus, Mg., and the supplementary list of 

 "Reputed British Diptera'''' contains no addition to this total. The 

 British Museum has recently received two entirely black male speci- 

 mens, which on casually glancing at them I took to be merely the 

 common Chrysops ccecutiens, L. On making a closer examination, 

 however, I at once saw that they must be distinct. 



The features which first attract attention are the larger hyaline space at the 

 apex of the wing and the much more pronounced and clearly defined transverse 

 fenestra on the inner (proximal) margin of the transverse band. The greater extent 

 of the clear space at the apex of the wing is due to the apical blotch (" Spitzenfleck " 

 of Schiner) being much reduced in size, and to the fact that the outer (distal) margin 

 of the transverse band is concave instead of convex. The transverse band does not 



