3. ATHERIX 283 



grey ; palpi blackish. Antennae blackish ; arista about twice as long as the 

 antennae. 



Thorax blackish brown, slightly shining ; humeri, the quadrangular space' 

 behind them, and the pleurae darker grey than in L. lineola. Pubescence 

 on the thorax fairly long and conspicuous, brownish yellow. Scutellum 

 entirely greyish black. 



Abdomen brownish black, but lurid and somewhat pellucid on almost all 

 the three basal segments, and almost ochreous about the hind corners of the 

 second segment, more conspicuously shining than in Z. /iWo/a ; pubescence 

 brownish yellow, neither short nor scarce. Belly shining blackish brown but 

 inclined to ochreous on the second segment ; pubescence pale, rather long. 

 Genitalia with the side lamellaj greyish, but the long incurved hooks and the 

 middle piece dark orange. 



Legs dull dark broAvn, but all the tibiae dull obscure orange with the tip 

 blackish; front femora obscurely and indeterminately orange on about the 

 basal quarter, and also nearly all the middle femora and the basal half of the 

 hind femora, though the posterior side of the hind femora is nearly all 

 obscurely orange ; middle tarsi obviously dull ol)Scure orange on more than 

 the basal joint, but the base of the other tarsi only slightly obscure. 



Wings distinctly darker than in L. lineola and more brownish orange 

 about the base. Halteres brown with yellow stems. 



$ . Frons with a more brownish tinge than in L. lineola ; palpi blackish brown. 



Scutellum greyish black with only the tip broadly but indistinctly 

 ferruginous. 



Abdomen shining brownish black with the sides of the first segment and 

 the sides and hind corners of the second segment ferruginous, and also 

 obscurely though rather bi'oadly ferruginous on all the hindmargins. 



Legs dull orange, but dull blackish brown on more than the apical half of 

 the front and hind femora, though the front femora are (as in L. lineola) 

 obscurely orange at the tip itself ; tibite as in the male but the fi'ont tibite 

 more distinctly blackish at the tip and the hind tibiae indistinctly darkened 

 on the apical quarter ; tarsi much blacker than in L. lineola, the front pair 

 being scarcely at all ferruginous at the base. 



Wings much browner than in L. lineola, with the base more brownish 

 orange I stigma blackish brown. Halteres more brownish orange. 



Length about 6 mm. 



This species is closely allied to L. lineola, and is probably only a dark 

 form bearing the same relation to it as L. nigriventris does to L. tringaria ; 

 it is curious that several species of Leplis appear to have very distinct- 

 looking light and dark races. 



L. monticola was taken hj Colonel Yerbury at Waterville in Co. 

 Kerry on August 1 and 4, 1901, and my description is made from a male 

 and a female taken liy him. It is recorded from Central Europe and Italy. 



Synonymy. — Egger described this (so-called) species in 1860, and Schiner ac- 

 cepted it' in 1862 ; Loew in 1869 considered it to be probably only a dark form of 

 L. lineola, but Becker in 1887 considered it a good species and stated that the male 

 (only) had some black hairs on the thorax ; he did not seem to recognise any 

 connection between it and L. lineola Q\i\iex then or when in 1890 he compared it 

 with L. funehris. Bezzi in 189.'^ gave it specific rank, but in Kertesz's '"Katalog" 

 (1903) he placed it as a "var."" of L. lineola. I have described it separately from 

 L. lineola mainly because British collectors may otherwise imagine that they have 

 found some new British LejJtis. 



3. ATHE3RIX. 



Atherix Meigen, Ilhg. Mag., ii., 271 (1803). 



Medium-sized moderately pubescent flies wliicli have 



