1889.] 449 



Britain. Mr. Verrall found it plentifully in Arran in June, 1882, and kindly sent 

 me several specimens ; I also captured three males myself at Baslow, in Derbyshire, 

 in July, 1887. 



It is oblongo-cylindrical in shape, shining black, with a grey abdomen having an 

 interrupted longitudinal stripe. The eyes are rather long haired ; the arista is de- 

 cidedly pubescent, almost sub-plumose ; the wings are mostly nigrescent, and the 

 halteres are also described as being of the same colour, but in all my specimens they 

 are testaceous ; the hind tibise are very hairy on both sides, and there is a strong 

 blunt spur on their inner side at the extremity ; the under-surfaces of the middle 

 femora are armed with a row of very strong long spines. 



T. iNNOCtrus, Zett. 

 This species, which was also found by Mr. Verrall at Arran in June, 1882, is 

 very similar to the former in general shape and colour ; but has the eyes in the 

 male more closely contiguous, and is destitute of the spur at the end of the hind 

 tibise, as well as of the spines beneath the middle femora ; the hind tibise are fur- 

 nished with hairs on their sides in a very similar manner to those of T. hirsutulus. 



CHORTOPHILA, Macq. 



C. cubvicauda, Zett. 



This minute species (only about 3 mm. in length) possesses several well marked 

 characters : the forehead and face are prominent ; the thorax is dull grey and indis- 

 tinctly striped ; the abdomen in the male is sub-cylindrical and greyish-black, be- 

 coming glabrous towards the apex ; the anal segments are globular, dilated and 

 reflexed ; the wings are somewhat nigrescent, especially at the base, and armed along 

 the whole costa with short spines. The female has the eyes only moderately sepa- 

 rated, and the abdomen (which is ovoid and pointed) of a shining brown-black 

 colour, with a metallic lustre. 



This little fly was captured abundantly at Shiere, near Guildford, in Surrey, by 

 Dr. Capron, in April, 1888, who kindly sent me several specimens of both sexes. 



PEGOMYLA, E. Desv. 



P. F1AVIPES, Pall. 

 This fly is distinct from the P. flavipes of Desvoidy and Macquart, a species 

 which I do not know. 



P. TRANSGRESSA, Zett. 

 Miss B. Prescott-Decie sent me a male of this rare fly in April last, which she 

 had captured near Chagford, South Devon, in May, 1888. It has not yet been 

 recorded as British. The antennae and palpi are black ; the eyes in the male are con- 

 tiguous, and the triangular space between them above the antenna? is red. The thorax 

 is cinereous and indistinctly striped. The abdomen is fusco-ferruginous, linear, and 

 depressed with very large complicated yellow subanal processes. The legs are tes- 

 taceous, with the exception of the fore femora, which are partly nigrescent, and the 

 tarsi, which are black. 



Bradford : November 6th, 1889. 



