1911.] 107 



about a strawberry bed iii a iiiaiiiier which at first made iiie luistalce it 

 for a large Salius fiiscus. 



Alhicincta is found everywhere, also in Scotland (vide Cameron). 

 Its food-plant is said to be Samhucus nujra. 



Bibis seems to be much less common than alhicincta, but I have 

 found single specimens of it occasionally. Its name indicates the 

 supposed food-plant of its larva, but whether it is really always at- 

 tached to Bibes I cannot say. 



The imagines of all the above species seem to appear usually in 

 May or June, seldom much earlier or later. None of them, as far as 

 I know, are double-brooded. 



(To be continued). 



TWO NEW SPECIES OF THE GENUS CHILOSIA, Mg. 

 BY COLBRAN J. WAINWRIGHT, F.E.S. 



I do not as a rule favour the plan of describing odd species 

 belonging to such genera as CMlosia, especially from single specimens ; 

 but the two species here described are unusually well characterised, 

 and the Swiss one being rather a fine insect which was too liandsome 

 to remain unnamed, led me to depart from my rule. By the kind per- 

 mission of Herr Th. Becker I was enabled to submit my specimens to 

 him before describing them, in order that possible mistakes might be 

 avoided, and he writes agreeing that they are both new. 



Chilosia helvetica, n. sp. 



^ . Eyes and face bare ; tibicB broadly yellow at both ends, tarsi in great 

 part yellow; antennae large and all fulvous, with bare arista; largish 

 species 11 mm. long, shining dark olive-green ; pubescence on thorax short 

 but dense, and entirely golden ; toings with bright yellow veins, and a con- 

 spicuoMs darlc patch across centre, with an inconspicuous dark cloud at tip. 



S ■ Head viewed in profile with moderately produced lower face ; face 

 slightly hollowed below antennae, nearly straight ; central knob small but well 

 defined, occupying rather more than one-fom-th of the face height ; iipper 

 mouth edge projecting considerably further forward than central knob ; lower 

 mouth edge much below iipper mouth edge, and the curve from one to the 

 other deeply hollowed ; for a similar head form see Fig. 23 in Becker's Mono- 

 graph of the genus CMlosia, in that, however, the central knob is a little more 

 prominent than in helvetica. Face withoiit hairs, but clothed with pale tomen- 

 tvun, which, however, leaves the central knob down to the upper mouth edge, 

 and the jowls in part, shining black. The eye margins narrow and equal in 



