1915.] 263 



of the same time noticed it to be abundant on the actual summit of 

 Mount Canigou, one of the higher Pyrenees, where the conditions were 

 ahnost arctic, and it was nearly the only insect to be found." 



I now solicit material from all parts of the British Isles, and from 

 as varied a habitat as possible, e.g., from the base of cliffs around our 

 coasts ; from moors and the tops of mountains ; from damp situa- 

 tions, from exceptionally dry places, from under stones in rich soil and 

 gardens, and from greenhouses, moles' and ants' nests, etc. They 

 should be collected into tubes of say 60 to 60 % alcohol, and as the 

 cerci break off very readily the tube should not be allowed to be only 

 partly full of liquid, thus causing the contents to be knocked about, 

 but q^uite full, and, though extravagant, this is important, i)lease pid 

 one insect in one tube. 



I append my address, and shall be pleased to identify and report 

 upon collections as early as circumstances permit, and to give any ad- 

 vice or suggestions. 



Penshaw Lodge, 



Penshaw, Co. Durham : 

 July 28th, 1915. 



A SECOND BRITISH SPECIES OF PLA8T0SCIARA. 



BY F. W. EDWARDS, B.A., F.E.S. 



(Published by iper'missio7i of the Trustees of the British Museum.) 



In a recent number of this periodical (May, 1915) I described, 

 under the name Plastosciara 'pernitida, a fly new to science, the first of 

 its genus to be found in this country. Hardly had this description 

 appeared in print when I received from Mons. D. Keilin, of the 

 Quick Laboratory, Cambridge, specimens of another British repre- 

 sentative of the same genus, which also proves to be new to science. 

 It differs from its congeners in size, coloration, and in the structure of 

 the male forceps, and may be described in the following terms : — 



Plastosciara keilini, sp. n. 



Head black. Antennae alike in both sexes, not quite twice as long as the 

 thorax ; fii-st joint of iiagellum about half as long again as broad, next fovir 

 joints about as broad as long, remaining joints about one-sixth longer than 

 broad, except the last joint, which is aboixt the same length as the first ; hairs 

 uniformly distribvxted, not quite so long as the width of the joints. Palpi short, 



