1908.] 253 



ON THE BRITISH SPECIES OF PIIORA (Past II). 



BY JOHN II. WOOD, M.B. 



APPENDIX TO SECTION B. 

 tty an oversight ;i very distinct species, at least in the case of the 



female, was omitted from its place in the table. It belongs to the 



small group with bristly pleurae and yellow halteres, and will come 



next after dubitalis, necessitating the following alteration in the 



table : — 



16a (16$) Costal fringe very long 2 mm. S ■ dubitalis, sp. n. 



ICyb (L6a) Costal fringe only moderately long. End of female abdomen bright 

 orange. 



$ $ . Thorax and abdomen black, the latter in female with the whole of the 6th 

 segment and under parts of the 5th of a rich yellow or orange, anterior scutellar 

 bristles half the size of the posterior ones ; frons black, and slightly shining, 

 rather broader than long $ , but of equal dimensions ? , supra-antennal bristles 

 moderately large and nearly equal ; palpi dirty yellow $ , clear yellow $ , broad 

 and strongly bristled ; wings clear or nearly so, their veins fine and dark, 1 barely 

 longer than 2 and shorter than 2 + 3, angle at the fork moderate ; legs black, 

 bristles on hind tibia} fairly large, with the central one plainly the longest ; 

 male abdomen stout, hypopygium not large but with a well developed yellow 

 ventral process, anal organ yellow and of moderate size; ovipositor yellow, 

 large and stout ; halteres slightly clouded at the extreme tip ? , but more 

 extensively <J 1\-1\ mm - flavieauda, n. sp. 



In all one male and three females have been captured. The male 

 and one of the females were taken September 9th, 1907, at Wall Hills 

 near Ledbury ; another female was swept from under spruce firs in 

 Stoke Wood, July 24tb, 1907 ; and the third was found at Woolhope, 

 July 24th, 1905, on the flowers of wood Angelica. The female, with 

 its remarkable orange-ended abdomen, is quite sui generis, but the 

 male is without any striking character, and comes rather near dubitalis, 

 the species with which it is bracketed. The latter, however, is a 

 larger insect with tinted wings, a longer costal fringe, and with the 

 thin veins coarse and strongly marked, the 1st costal division is also 

 distinctly longer than the 2nd and rather longer than the 2nd and 

 3rd together, and the fork more open than in fiavicauda ; further, the 

 tibial bristles are longer and the central one not larger than the 

 others. There are other small differences which need not be men- 

 tioned. 



On a recent visit to Sweden Mr. Collin took the opportunity of 

 examining Zetterstedt's and Fallen's types, and made some very in- 



