1888.) 99 



tinal vein, while AcypJiona has it long before the end. Page 159, line 

 8, D. lutea has no process from the male genital lamella ; I expect 

 this error crept in from an unnoticed D. mitis, in which species the 

 process is very conspicuous. Page 265 : I have already called attention 

 that the second clause of 18 should be omitted, it being in its right 

 place at 26 ; at 22 should come in L. subtincta, Ztt., with clouded 

 cross veins, these being almost uncoloured in L. discicollis, Mg. Vol. 

 xxiv, page 111, before A. immaculata in the table will come A. clari- 

 pennis, n. sp. ; medium sized, ground colour yellowish-grey, male 

 genitalia and base of ovipositor ochreous, as against the smallish 

 species with black-grey ground colour, and having the male genitalia 

 and base of ovipositor blackish. After A. occulta in the notes should 

 come 



A. claeipennis, n. sp. ( $ ? ). — Flavido-cinerea ; thorace lineis quatuor fuscis ; 

 abdomine ochraceo-fusco, basi, lateribus et genitalibus ochreis ; alls hyalinis, basi 

 jiavidis. Long, corp., 8 mm. 



Head blackish-grey, rostrum near end obscurely ochreous ; palpi blackish-grey ; 

 antennee 17-jointed, joints not crowded together, basal joint elongate, greyish, rest 

 black, globular-oval, and bearing short bairs. 



Thorax light yellowish-grey, with four somewhat shining dark brown lines and 

 humeral pit, the middle pair of lines close together, extending to front but not to 

 back, side pair abbreviated in front but extending to back ; pleurae yellowish-grey ; 

 halteres dirty yellowish, knob brownish. 



Abdomen dark brownish, the base, lateral stripes and genitalia ochreous, the 

 middle segments obscurely ochreous ; in the female the base of the ovipositor is 

 ochreous. 



Wings hyaline, considerably yellowish about the base ; the first sub-marginal 

 cell is sometimes considerably, sometimes only a little, longer .than the second ; a 

 discal cell is often present— in my twelve specimens three have a discal cell on both 

 wings, five on neither wing, three on the right wing only, and one on the left wing 

 only ; when the cell is present, the upper vein from it is forked, and the stem is 

 nearly twice as long as the fork ; in one specimen the second sub-marginal cell is 

 petiolate on the right wing, the neuration then would be identical with Tricyphona, 

 only the connecting vein closing the discal cell happens to be present. The preefurca 

 is short, sometimes very short, about midway between the sub-costal and marginal 

 cross veins ; the great cross vein is very sloping. 



Legs dark brown, femora ochreous until after the middle, often almost to tip ; 

 coxae and trochanters yellowish, sometimes the extreme base of the coxee is obscure ; 

 spurs small, ochreous. 



I know no European species at all allied to this ; the dark colour, 



clear wings, and medium size at once distinguishing it. I caught one 



at Frant on June 4th, 1886, and then found it abundant in Wales, 



especially about Barmouth, early in June, 1887. Professor Mik 



showed me last January some Austrian specimens. 



Sussex Lodge, 



Newmarket. 



1 2 



