1894.] 109 



The latter species has not yet been recorded as British ; it is thus characterized : 

 - — Forehead rather prominent ; eyes widely separated in the female ; frontal stripe 

 black, and about equal in width to the sides of frontalia, which, like the face, are 

 glistening white ; fronto-orbital setae extending about half way down the face, but 

 not so far as in C. rustica ; facial cilise only present on the lower third of the 

 facialia ; antennae black, with the third joint about twice as long as the second in 

 the female, but is said to be not much more than the same length in the male ; arista 

 with the third joint thickened for about two-thirds of its length ; palpi piceous ; 

 thorax and scutellum grey, the former with four moderately wide black stripes, and 

 three post sutural outer dorso-central bristles ; abdomen oval, grey, marked with 

 irregular, transverse, black bands and tessellations ; legs black, with hind tibiae 

 irregularly armed with setae on their outer sides ; wings grey, with yellow roots, 

 apical cross veins oblique, and somewhat curved ; cubital appendix rather short. 



I have only seen a single female of this species, which was captured at East- 

 bourne by Mr. W. Esam, and kindly sent to me by the Eev. E. N. Bloomfield. 



Sub-gen. III.- APOEOTACHINA, sul-g. n. 



Suh-ge7i. ch. — Eyes widely separated in both sexes ; fronto-orbital 

 setae only extending as low as the base of the third antennal joint ; 

 antennae with the third joint usually twice the length of the second ; 

 facialia almost nude ; abdomen with both discal and marginal setae on 

 the middle rings ; wings without cubital appendix, and with the fourth 

 longitudinal vein often bent at a blunt angle, or in a slight curve ; 

 apical cross vein mostly straight, and terminating rather nearer to the 

 apex of the wing than in the species belonging to the two former 

 sub-genera. 



1. — A. ANGELICffi, Mgn. 

 2.— A. BEEVIPENNIS, „ 



3. A. MGEOSA, „ 



4. — A. AGILIS, „ 



5. — A. HOETENSIS, „ 



Sub-gen. IV.— PELATACHINA, n. n. 



Hyria, Dsv.,* Br. et v. Brg., pre-occupied. 



Sub-gen. ch. — Eace oblique ; epistome prominent ; eyes much 

 nearer together in the male than the female ; antennae short, the 

 second joint a little elongated, and the third not more than one and a 

 half times as long as the second ; fronto-orbital setae only extending 

 as low as the base of the second antennal joint ; facial setae very few ; 

 abdomen narrow (in the male) and subcylindrical, having both discal 



* Dipteres des ouvu-ons de Paris. T. i, p. IIUO. 



