1 6H f"^"^^' 



NOTES ON BEITISH PHORA (Corrections and Additions). 



BY JOHN H. WOOD, M.B. 



(Concluded from p. 99.) 



atrimana, sp. n. 



,? ? . A deep black insect with almost colourless wings : Thorax, abdomen, 

 and halteres black, pleural bristles strong- and equal ; frons and supra-antennal 

 bristles much as in campestris ; antennae of ordinary size, palpi pure black ; 

 wings scarcely tinted, costa less than half the wing length, bvit more than | in 

 both sexes, fringe moderately long, 1 dovible 2 ( (J ), rather more ( ? ), angle at 

 fork moderate, 1st thin vein scarcely curved at its origin ; legs black, fore-legs 

 browner, cilia under hind femora small (in campestris moderately long on inner 

 half), hind tibiae less robust, and cilia weaker than in campestris ; hypopygivmi 

 and anal organ large and black, and similar in form to those of campestris, the 

 former as in that species with a few long liairs rather than bristles below. 

 1} — 1^ mm. 



Of all the species in this section it comes nearest to campestris, 

 but the shorter costa, longer fringe, and deep blaclc legs are characters 

 obvious enough to distinguish it at once from that species. 



A pair only. Dates and localities: J . Middle Parle Pool, 10/6/09 ; 



? . Westhide, 28/10/07. The female happens to be a somewhat 



abnormal specimen, the 2nd thick vein on the left side being unforked, 



and the anterior or least stable scutellar bristle t)n the same side being 



reduced to the condition of a hair. 



Aphiochxta major, sp. n. Very near ciliata, with which it agrees 

 absolutely in general colour, form and armature of legs, and in the 

 possession of a very long pleiiral bristle, but distinguished by two 

 important characters, namely, the absence of the abbreviated 4th 

 abdominal segment of the female, and by the thickness of the costal 

 vein, which is unusixally slender in ciliata but of ordinary thickness in 

 major. Less important distinctions are a somewhat wider frons with 

 stronger bristles, paler wings with the first costal division rather 

 shorter than the other two, instead of being as long or even rather 

 longer, and in the forelegs being darker, the coxae especially wanting 

 the bright yellow colour which is so conspicuoiis a feature of ciliata' s. 

 The hypopygium and anal organ are also somewhat larger, and the 

 underside of the former is more produced posteriorly. It is, besides, a 

 larger and more robust insect, and measures 2 mm. 



For the present it remains very scarce. The first specimen I saw 

 was a female submitted to me by Mr. Collin, who captured it at Wey- 

 bridge (Surrey), 5/7/09. A pair have since fallen to my share, the 



