1892.] 95 



cic stripes are finer, the scutellum yellow instead of gi'eyish-yellow, the stripe on the 

 back of the abdominal segments is rather narrower, and the yellow patches on the 

 sides extend on to the third segment ; the anal segment in the male is rufous or 

 yellow instead of grey, the outer cross vein is rather nearer to the angle of the fourth 

 longitudinal, being placed at about one-third of the distance between that and the 

 inner cross vein, instead of two-fifths ; the fore femora also are quite yellow. Not 

 uncommon. 



M. PACiFiCA, Mgn. 

 This species differs from all the former ones by having the abdomen entirely 

 grey, with the exception of a small yellow patch on each side of the first segment ; 

 the third joint of the antennae is longer, it being between two and three times the 

 length of the second ; the palpi are thicker at the ends ; the scutellum is grey ; 

 and the wings have the fourth longitudinal veins bent more at an angle. Rare ; 

 I captured one near Ulverstone, in Lancashire, in 1889 j it is also in Miss Presoott- 

 Decie's collection. 



33.— LESKIA, Dsv. 



Mtobia, p. Mgn. and Mcq. 

 Pyerosia, p. End. 



I have introduced this genus out of its numerical position in my 

 analytical table owing to its close affinity to the prec* ding one, from 

 which it scarcely differs, except by having the third '^f the an- 



tennae a little longer. Meigen and Macquart both placv he only 

 species which it contains in Myohia, and E-ondani includes it in his 

 genus Pyrrosia. R. Desvoidy thus defines the genus : " Tons les 

 caracteres du Genre Myobie, le troisieme article antennaire triple du 

 deuxieme qui est plus court, teintes jaune."* Though the characters 

 of the two genera are, therefore, almost identical, still the species 

 referred to Leskia is peculiar, and differs in appearance (being wholly 

 yellow) as well as in habits from those in Myohia, the larvse of the 

 latter being parasitic upon Hymeno'ptera or Coleoptera {Curculioiiidce) , 

 while those of the former are said to live in the bodies of the cater- 

 pillars of Lepidoptera (Sesice). 



L. AUEEA, Fin. 



Jlavescens, Dsv. 

 Ochreous ; head and face golden-yellow, with silvery glitter ; frontal stripe 

 narrow, and reddish-brown ; antennae dark yellow ; palpi yellow, long and narrow 

 in the male, and slightly thickened at the end in the female ; thorax light brown, 

 with golden-yellow pubescence, and very faintly striped ; abdomen ochreous and 

 translucent, the sides and hinder edges of the segments having silvery-white 

 reflections ; calyptra and halteres yellow ; wings brownish-yellow ; legs yellow, 

 with brown tarsi. "Very rare. 



* Essai sur les Myodaires, p. 100. 



