396 [October, 



When I published my Annotated List and First Supplement, I had not seen a 

 British specimen of H. lugtihris or of any of its congeners, though it had been re- 

 corded as indigenous by Stephens and Walker. A few months since, however, I had 

 the pleasure of receiving one from Miss R. Prescott-Decie, of Bockleton Court, near 

 Tenbury, which she had captured at Chagford, South Devon, in May, 1888. I 

 determined this to be H. consohrina, Zett. 



H. SUDETICA, Schn. 



At Baslow, in Derbyshire, in July, 1887, I captured two males of a distinct and 

 well marked little species which appeared to me to be new to science. In colour, 

 form and general appearance it bore a strong resemblance to S. basalis, Zett., but 

 was only half the size ; and also differed by having only a pubescent arista and 

 short haired eyes. I was in doubt whether to place it in the genus Hyetodesia or 

 Trichopthicus, especially as it had a strong spur at the inner end of each hind tibia, 

 as is found in several species of the latter genus ; but tl^e ov al shape <of the abdomen 

 with its general form and colour pointed to its proper, place being in the more highly 

 developed genus. I intended to publish a description of it, but delayed doing so 

 until I found that it had also been discovered at about the same time (in July and 

 August, 1887) by my friend Dr. Schnabl at Grsefenberg, in Austrian Silesia, and a 

 description of it publislied in the Entomologische Nachrichten* under the name of 

 Alloeostylus sudeticus. He placed it in a new genus, in which he also included H. 

 simplex, Wdm., and M.flaveola, Fin., but I think it better to leave it for the present 

 in the genus Hyetodesia. 



This little fly is about 5 mm. {2\ lines) in length, of a yellowish-grey colour, 

 with the thorax marked with four longitudinal black stripes, the outer ones being 

 maculiform, and furnished with four post-sutural dorso-central bristles. The abdo- 

 men has a fine dorso-central stripe, and shows some dark reflections ; the legs are 

 testaceous with black tarsi, and in my specimens the fore femora only have the 

 greater part nigrescent ; while Sehnabl says that in his, " femoribus obscure piceis," 

 which I suppose applies to them all. The hind tibiae, as I have mentioned, are 

 armed at their inner extremities with a blunt spine or spur, which consists of two 

 bristles joined together into a fasciculus. I have not seen a female, but Dr. Schnabl 

 captured two which seem closely to resemble the males. 



(To be continued). 



1888, No. 4, Seite 49—50. 



