THERETRA PORCELLUS. 93 



(4). Anterior wings, ground-colour olive-ochreous, transverse lines well- 

 marked, red parts ill-developed, rosy-grey in tint ; the hindwings with the outer 

 area suffused and with only slight traces of reddish=ab. indistincta, n. ab. 



Oldham captured (Proc. Sth. Lond. Ent. Soc, 1888, p. 68) 

 an aberration with the usual pink blotches along the costal 

 margin of the forewings narrower, and of a much lighter shade 

 than in most specimens, whilst the broad outer margins are 

 somewhat indistinct. Tugwell notes ( Young Nat., x., p. 43, and 

 Proc. Sth. Lond. Ent. Soc, 1888, p. 129) an aberration, bred 

 January 28th, 1889 (from a forced pupa, the larva from Kings- 

 down), as having " the usual deep rose-colour almost absent, 

 only the rose-coloured body being normal, the forewings with 

 a fine rose-coloured narrow streak along the costal margin, the 

 whole of the disc of the wing being of a faint bright olive-green 

 with a faint show of grey shade on the inner margin. The inferior 

 wings are greenish with faint grey-brown shades along the inner 

 margin." Moncrieffe captured, at Moncrieffe, an aberration in which 

 the ordinary colour is replaced by grey with lemon markings (E?it., 

 xi., pp. 103, 169, pi. ii., fig. 3). Bartel notes (Pal. Gross-Schmett., ii., 

 p. 125) an aberration in which the outer margin on the upperside 

 of the hindwings, which is rose-red in normal specimens, has the 

 blackish tone of the inner-marginal half, so that the red colour has 

 entirely disappeared, while the yellowish-green is confined only to 

 a weak, dusky, central stripe ; there is also a considerable difference 

 on the underside of the hindwing ; in the typical form the outer 

 margin is broadly red, sharply bounded by black towards the base, 

 but in this aberration the margin is light grey, only weakly tinged with 

 red, and shades off gradually into the yellow colour of the central area. 

 Examples in which the hindwings are much suffused with blackish might 

 be termed ab. suffusa, n. ab. Rothke in his fauna of Crefeld, mentions 

 a bred example of T. porcellus which was almost entirely scaleless, 

 but in which, unfortunately, the hindwings were slightly crippled. The 

 following appear to be the only named forms of the species : 



a. ab. lutescens, CklL, "Ent.," xx., p. 152 (1887); "Proc. South Lond. 

 Ent. Soc," 1887, p. 101 (1888). Porcellus ab., Carr., " Ent.," xi., p. 169, 

 pi. ii., fig. 3 (1878). — A very pale aberration, in which all the rosy-crimson of 

 the normal examples of the species is replaced by yellow, and the coloration 

 much subdued. Captured at Moncrieffe by Sir Thomas Moncrieffe, and is in 

 beautiful condition (Carrington). The normal pink replaced by yellow. Perthshire 

 (Cockerell, with reference to Ent., xi., p. 169, pi. ii., fig, 3). 



Bartel notes (Pal. Gross-Schmett., ii., p. 125) that greenish-yellow 

 aberrations, in which the red has quite disappeared, have occurred 

 rarely in several localities in northern Germany. He supposes that 

 these may belong to an analogous form to that to which Heylaerts 

 alludes in his Macrolep. Fauna of Breda, and which was found 

 freshly emerged on May 26th, 1869. It is figured on pi. vi., fig. 1, 

 and is distinguished, so far as can be seen from the figure, by its 

 entire lack of red colour on the forewings. This is replaced by a 

 yellowish-brown, in which the somewhat darker markings are by no 

 means prominent. Hindwings yellow in the middle, light rose-colour 

 before the outer margin. 



(3. var. suellus, Stgr., " Hor. Soc. Ent. Ross.," xiv., p. 298 (1878) ; " Rom. 

 M6m.," i., p. 71, pi. W., fig. 1 (188T); "Cat.," ed. 3, p. 104 (1901); Kirby, 

 " Cat.," p. 660 (1892) ; Bartel, " Pal. Gross-Schmett.," ii., p. 127 

 (1900). Porcellus var., Led., " Ann. Soc. Ent. Belg.," xiii., p. 28 (1869). 

 — In size, form and formation of antennas, &c, suellus entirely agrees with 



