4:2 fFebruary, 



ADDITIONS TO THE LIST OF BRITISH A^THOMYIID^. 

 BY E. H. MEADE. 



Myd^a affinis, sp. n. 

 i. Livida siibnitida, cano-tomentosa ; oculi contlgui ; thorax antice 

 distincte, postice obscure, vittatus ; abdomen linea dorsali tenui, tessellisque 

 nigris ornatum ; femora omjiia {cum tibiis) Jlava. Long., 8 — 9 mm. 



This species bears such a close resemblance to M. pagana, Mgn., that I formerly 

 considered it to be only a variety of that fly ; but, after the careful examination of 

 a specimen which I captured in June last, I have no doubt about its being distinct. 



It is of a bluish-black colour, having whitish-grey toraentum on the thorax and 

 abdomen. The eyes are coherent. The thorax is distinctly marked by four black 

 stripes on its front half, but the lines become nearly obsolete behind the transverse 

 suture. The abdomen is marked by a narrow longitudinal stripe in the middle of 

 the upper segments, and also distinctly tessellated by irregular black spots or patches. 

 The legs are entirely reddish-yellow, with the exception of the tarsi, which are black. 



M. pagana varies in colour ; the more common variety is covered with yellowish- 

 grey tomentum, but in many examples this is of a whitish or bluish-grey colour. 

 M. affinis resembles the latter variety in tint, but differs from both kinds in the 

 following points : the eyes are coherent instead of being subcontiguous ; the hinder 

 part of the thorax is less distinctly striped ; the dark abdominal patches or tessella- 

 tions are much more marked ; and the fore femora are entirely yellow, not blackened 

 at the base as in M. pagaua. 



I captured two males of this species near Lake Windermere several years ago, 

 and found another in June, 1890, at Grrange-over-Sands, in Lancashire ; also in the 

 Lake District. I do not know the female. 



HOMALOMYIA VESPARIA, Sp. n. 



S . Nigra siibnitida thorace substriata, abdomine elongato-glauco, ma- 

 culis trigonis ampliis signato ; oculi arctS contigui ; femora intermedia 

 sub-buccata, subtus, barbata, basi niida ; tibice intermedice tuberculo elongato 

 piano, breviter ciliato, instructed ; tibia? posticce villosce. Long., 7 mm. 



This species closely resembles H. scalaris, F., in size, shape, colour, &c. ; it is 

 also nearly allied to H. coracina, Lw. {H. spissata, mihi*), but differs from them 

 both in several well marked distinctive characters, which I will briefly point out. 



The eyes are quite contiguous, while they are somewhat separated in H. scalaris, 

 and also to a less degree in H. coracina. The antennae and other parts of the head 

 resemble those of II. scalaris. The thorax is black, shining, and indistinctly striped, 

 as in both the other allied species. The abdomen resembles that of H. scalaris, 

 being elliptical, rather more elongate than that of H. coracina, and marked as in H. 

 scalaris, with much wider triangular dorsal marks than in H. coracina. The wings 

 have the third and fourth longitudinal veins slightly approximated at their extremi- 

 ties, as in H. scalaris ; they are almost parallel in H. coracina. The internal 

 transverse veins are situated at some distance before the termination of the auxiliary 

 vein, with the point of which they are placed in almost a straight line in both H. 

 scalaris and H. coracina. 



* See the description of this species in Eut. Mo. Mag., vol. xviii, p. 203. 



