SMERINTHUS OCELLATA. 425 



p. 5 (1835). Ocellatus, Stephs., " Illus.," i., p. 112 (1828); " Cat. Br. 

 Ins.," pt. 2, p. 30 (1829) ; " List Br. An. Br. Mus.," v., p. 26 (1850) ; Meig., 

 "Eur. Schmett.," ii., p. 148 (1830); Wood, " Ind. Ent.," p. 11, fig. 7(1839); 

 Humph, and Westd., " Brit. Moths," p. 7 (1841) ; Sta., u Man.," i., p. 87 

 (1857); Hein., "Schmett. Deutsch.," p. 150 (1859); Humph., "Gen. Biit. 

 Moths," p. 7 (i860); Newm., " Brit. Moths," p. 4 (1869); Bdv., "Spec. 

 Gen. Het.," i., pp. 17, 31 (1875) \ Kirbv, " Eur. Butts, and Moths," p. 74 (1879) '> 

 " Cat.," p. 711 (1892); " Handbook, &c," iv., p. 60 (1897) ; Poulton, "Trans. 

 Ent. Soc. Lond.," pp. 27 et seq. (1884) ; loc. cit., pp. 283 — 284, pi. x., fig. 1 (1887) ; 

 Hellins, " Buckl. Larvae," &c, ii., p. 99 (1887); Auriv., " Nord. Fjar.," p. 43 

 (1889); Bacot, "Ent. Rec," vi., p. 174 (1895); Meyr., "Handbook," &c, 

 p. 299 (1895) ; Griffiths, " Ent. Rec," vi , p. 256 (1895) ; Barr., " Lep. Brit.," 

 ii., p. 3 (1895); Lucas, "Brit. Hawk-Moths," p. 123 (1895); Grote, "Ent. 

 Rec," viii., p. 18 (1896); Tutt, "Brit. Moths," p. 20 (1896); Chapman, 

 "Ent. Rec," xi., p. 186 (1898) ; Lamb., "Ent. Rec," xi., pp. 330 et seq. (1899). 



Original description. — Sphinx ocellata, alis angulatis : posticis 

 ocellatis. Rai., Ins., 148. Phalaena major, corpore crasso, alis 

 amplis interioribus macula ophthalmoide. Mouff., Ins., 91. Goed., 

 Ins., 3, p. 25, t. O. Uddm., Diss., 58, f. ii. Mer., Ins., 2, t. 37. 

 Wilk., Pap., 10, t. 1, B. 5. Jonst., Ins., t. 8, f. 30. List., Goed., 

 68, f. 24. Alb., Ins., 8, f. 12. Roes., Ins., 1, phal. 1, t. 1. Rai., 

 Ins., 148, no. 2. Habitat in Spiraea, Salice, Pomiferis, Drupiferisque 

 arboribus (Linn., Sys. Nat., xth ed., p. 489). [To this Linne adds : 

 " Imago elinguis. Thorace macula ferruginea. Larva viridis lineis 

 albis" (xiith ed., p. 797).] 



Imago. — 68mm. — 93mm. Thorax and abdomen dove-grey to 

 fawn with a broad central velvety-brown dash on thorax. Anterior 

 wings dove-grey or fawn, shaded, mottled, and streaked transversely 

 with olive-brown, a dark outer marginal border, a small patch on 

 inner side of transverse streak, a suffusion of central area strongest 

 towards base and below the pale grey lunule ; the posterior wings 

 beautifully suffused with bright rose-pink from base for two-thirds 

 towards margin ; the ocellated spot consisting of a bluish-black pupil 

 surrounded by bright blue, in turn enclosed by a broad black margin. 



Sexual dimorphism. — The ? is decidedly larger than the $ — 

 say as 85mm. to 73mm. The ? is much heavier and, in a set 

 specimen, the $ abdomen has. a concave margin, the ? convex ; 

 this is more marked during life, when the $ sits with the abdomen 

 very markedly curved upwards. The male has larger and denser 

 hairs on many parts, the thoracic dark crest stands up more 

 markedly, but especially the legs are more roughly haired ; this is 

 very pronounced in the tibiae and first tarsal joints of the front 

 legs. The first tibiae and spurs are more robust in the $ . The 

 $ colouring is perhaps lighter and brighter, and the markings more 

 crisply detailed than in the 2 , but individual variation quite swamps 

 any such distinction between any specimens taken at random. 

 The antennae differ as in all other Sphinges, but the hairs on the 

 $ antennae are especially well-developed, so that the sexual differ- 

 ence is more marked than usual. The antennal joints 54 to 56 seem 

 the same in both sexes (Chapman). 



Gynandromorphism. — Compared with the large number of 

 recorded gynandromorphic examples of Amorpha populi, there are 

 very few of this species. The following are those which appear 

 to have been recorded : 



a. Left side «? , right ? . Left pair of wings darker than the right ; left 

 antenna <? , right <? . Along the abdomen a sharply-marked dividing line, which 



