202 



[September, 



SUPPLEMENT TO "A SYNOPSIS OF BRITISH PSYCnOBIDJL." 



BY THE KEV. A. E. EATOK, M.A., F.E.S. 



{Continued from page 131). 



Subsection A of the 3rd Section of Peeicoma. 



Eefer ante 2nd ser., vol. iv, 123, step 1 ; also supra p. 127. 



Affinities with Subsections B and E, and partly with D. 



Wing-inarkings in great measure independent, for their good 

 definition, upon the pose of the specimen with regard to light. On 

 nervures with ruffled hair, except on the mediastinal and axillar, the 

 rows of bristling hair extend beyond the second or median dark 

 transverse band and end in the light, or white, haired interval that 

 sliirts it externally ; on the axillar the bristling hair ends with the 

 nervure in the dark median fascia. The narrow dark cuspidate or 

 halbert-shaped fascia across the extreme base of the wing is sometimes 

 indistinct. Beneath at the wing-roots, interior to the fringes, in both 

 sexes, the wing-nervures are beset with long, linear, stipate scales that 

 are more or less acuminate, and are very soon succeeded by flattened 

 hairs, followed soon in their turn by ordinary hairs. 



16. Peeicoma ocellaeis, Meigen. 

 \\Trichoptera ocellaris, Meig., *K]assif. d. Zweifl., Bd. i, 44 (1804). 

 — Psychoda ocellaris, Lat., Gen. Crust, et Ins., iv, 251 (1809) ; Meig., 

 System. Beschr., *[ed. i], i, 105, tab. iii, 14 and 17 (1818) ; id., op. 

 cit. [ed. ii], i, 83, tab. iii, 14 and 17 (1851) ; Zett., Dipt. Scand., ix, 

 3705 (1850).— P«. variegata, Macq., Dipt. N. de France, p. 167 (1826). 

 — Pericoma ocellaris (Hal. MS.), Walk., Ins. Brit. Dipt., iii, 258 

 (1856) ; Schiner, Fn. Aust. Dipt., ii, 633 (1864) ; v. d. Wulp, Dipt. 

 Neerland., i, 318, pi. ix, 16 [neuration] (1877) ; Etn., ante, 2nd ser., 

 vol. iv, 124, step 2, and vol. v, pi. ii, P. 16 (details). 



The inner border of the dark median fascia of the wing meets the costa sub- 

 opposite the end of the axillar nervure, but is shortly recurrent in the costal fringe ; 

 from the oosta it recedes obliquely to the bifurcation of the radius, then passes 

 obliquely to the bifurcation of the pobrachial, whence it again recedes obliquely to 

 the anal nervure subopposite its limit on the radius, and from thence runs sub- 

 transversely to the inner margin : in wings that are excessively flattened out its 

 course to the inner margin from the radius is deeply and boldly curved. The outer 

 border of the same fascia is transverse from the terminal white hair-spot of the 

 subcosta to the anterior radius ; on the next three nervures it is advanced rectangu- 

 larly to subopposite the end of the postical nervure, and the fascia is there connected 

 in front (by means of oblique prostrate dark hairs) with a dark space on the costa, 

 while confluent in the usual manner, along the prsebrachial nervure, with the ulterior 



