1 70 BRITISH LEPIDOPTERA. 



kriechen die Vogel zu einerley Jahreszeit aus. Doch sind mlr Ao. 

 1771, 2 Stuck von dem S. gallii vier Wochen nach ihrer Verwand- 

 elung ausgeflogen, nemlich im Aug. da die Raupen sich erst im 

 Julio verwandelt. Es ist dieser letzte Vogel und seine Raupe 

 ziemlich selten, und ich habe in keinem Jahre mehr als ein, hochstens 

 zwey Stiick davon gefunden, da hingegen die Wolfmilchraupe in 

 hiesiger Gegend sehr haufig ist. Alle diese Umstande zusammen 

 genommen, scheinen mir genugsamen Grund zu geben, diesen jetzt 

 beschriebenen Vogel nicht fur eine blosse Abanderung vom Sphinx 

 enphorbiae, sondern fur eine besondre Art zu halten, und ich nenne 

 ihn daher nach dem Futter der Raupe Sphinx gallii (Rottemburg, 

 Der Naturforscher, vii., pp. 107-108). 



Imago. — 62*5111111. — 91mm. Thorax deep olive-brown, with white 

 lateral lines from front to end of thorax, edged above with blackish ; 

 abdomen deep olive-brown banded alternately with black and white 

 towards thorax and ringed with white towards anus, a median 

 longitudinal dorsal row of white spots. Anterior wings deep olive-brown 

 with a moderately wide oblique ochreous fascia from apex to inner 

 margin near base, curved as it approaches inner margin, pointed 

 towards apex, and extending somewhat wedge-shaped towards base, 

 two irregular extensions on upper edge, one at end of discoidal cell, 

 the other midway between this and apex ; outer marginal area 

 purple-greyish ; fine inner marginal line white ; basal patch of white 

 scales ; fringes unicolorous, dark ochreous-brown. Posterior wings 

 with black base ; central band creamy-pink, becoming quite red 

 where it meets the white basal patch ; black submarginal band 

 (variable in width) ; outer marginal area pinkish-grey, speckled with 

 dark scales ; fringes white. 



Sexual dimorphism. — The ? tends to be the larger, but there 

 is very little difference in the general build, the more slender aspect 

 of the $ is obscured in cabinet specimens by the contraction of the 

 segments. The antennae are longer in the $ . The anterior tibial 

 spurs are 2*21211x1. long in the $ , only 17mm. in the 2 ,and the comb is 

 more than proportionally reduced, occupying barely a third of the 

 length of the spur, whilst the spines of which it is composed are short 

 and hairlike. In the $ , the comb occupies fully half the length of 

 the spur and the individual spines look flat and are very unlike 

 ordinary hairs, they are more than twice the length of those 

 in the ? spur (about o'2mm. and o'imm,). The $ possesses a scent 

 fan consisting of a rather small wisp of hairs about 3*omm. in length, 

 enclosed in a pocket at the side of the first and second abdominal 

 segments (Chapman). 



Gynandromorphism. — The following is the only gynandromor- 

 phous example of which we can find any record : 



a. Left $ , right $ . Incomplete gynandromorph, but more ? ; right antenna 

 and wings strikingly Longer, but not different in colour and markings ; abdomen 

 ?. Bred. (Germar, Meek. Archiv. ; Rudolphi, p. 54; Burm., p. 341; Hagen, 

 S. E. Z., xxii., p. 271, Schultz, ///. Woeh. fur Ent., i., p. 351). 



Variation. — The species varies considerably in the depth of the 

 ground colour, in the paleness of the outer marginal area, in the width 

 of the oblique band, and in size. In some specimens the band is deep 

 ochreous, others incline markedly to whitish-ochreous, ah. pallida, n. ab., 

 whilst the two projecting teeth on the upper edge of the band vary 



