]^24 (June, 



the s^^nonymy now promulgated. Among the specimens referred to 

 in the volume for 1S95, p. 209*, those labelled Seaton, or Penselwood 

 Common, belong here. 



32. Pericoma auriculata, Hal. MS. 



Psychoda auriculata (ITal. MS.) Curt. Brit. Ent., xvi, 745, fig. 9 

 (wing), and probably fig. T. (1889), [undescribed]. 



Pericoma Xfmcn, Walk., Ins. Brit. Dipt., iii, 2(50 (1S5G) ; ? V. d. 

 Wulp, Dipt. Neerl., i, 31S (1877). 



$ . Base ot" wing, interior to the parting of the bristling from the smoother hair, 

 subequal in depth of tint to the region beyond : a broad band of dark hair, faintly 

 defined, extends along the parting from the anterior radius to the postical nervure, 

 without quite touching tlie axils of the forks, and except at its commencement 

 (where it is narrowed a little) maintains a tolerably even width. Anul and axillar 

 nervures from certain standpoints rendered more noticeable than the other veins 

 through a difference in their under-clothing ; the former rather more prominently 

 arched than the latter and inclined slightly backwards ; the axillar above, clad in its 

 basal half with bristling hair. Fringe of the alula in no way extraordinary ; the 

 longest hairs would not reach beyond the limit of the bristling hair on the last 

 nervure : marginal fringe of the concave axillar area more or less obliquely deflexed ; 

 the margin in this part scale-clad below the fringe, with the scales for a short distance 

 at its commencement imbricate and subappressed to the border, but soon divergent 

 in two ranks, — one rank lining or mingling with the hair of the fringe and composed 

 of acicular scales hardly half the length of the hairs ; the other rank, of shorter, 

 very narrow linear scales, obliquely appressed to the membrane. Axillar and anal 

 nervures, beneath, also squammate througliout ; the scales for the most part linear, 

 disticlious, obliquely divergent and secund, or reclinate upon the membrane, but 

 becoming freer and acuminate towards the end of the anal, and finally hair-like. 

 Anteriorly the scales are acuminate from the commencement, and gradually become 

 more and more restricted in extent, giving place to flattened hair, succeeded by 

 ordinary hair much sooner than in P. fusca ; hence the wing of the <? in P. 

 auriculata has a more feminine aspect than the wing of the other male, although 

 lacking the dark spots of the female. Fringe of the costal callus, or humeral tuft, 

 in well-preserved specimens, densely fasciculate and relatively very long, extending 

 to subopposite the radial bifurcation, along and partly behind the fringe of the 

 costa, in a way that makes this seem to be doubled back or somewhat revolute at its 

 commencement. Gloss on the tarsus limited to the extreme apex of the terminal 

 joint. In other respects very similar to P. fusca, and in general colouring quite as 

 dark as the female of that species. 



? . Just like the female of P. fusca (31) : identifiable by association with (he 

 male. 



Ilaliday's description (ef. P. X fusca, Walker, op. cif.) applies 

 better to the present species than to No. 31, because he calls attention 



* Walker's iippliciition of the name P. fusca was followed in loc. cit. To make the paragraph 

 coiifiirm to the synonymy here adopted, the parenthesis alhiding to the SjTiopsis should be 

 trar.sfeired to after " .\Iacquai-t." 



