46 BRITISH LEPIDOPTERA. 



hybrid, in general, possesses it. The uppenvings are more porcellus, with the 

 exception of the black basal area (Hu»uenin). 



The details of obtaining the moth are given by Gruet (of Renan) 

 as follows : Larvae found in July, 1870, on the large Epilohiuni 

 in the ditches on the banks of the Suze ; they were of different 

 sizes, with the colours more or less dark, and I supposed they were 

 of the same species, but, in the spring of 187 1, on the emergence 

 of this particular specimen, my' father sent it to you. Porcellus 

 is also found here, but I have not yet been able to discover the 

 larva. Bartel gives (Pal. Gross-Schmett., ii., pp. 122 — 123) another 

 detailed description of the specimen, and adds : " There is a 

 further specimen of this interesting hybrid in Wiskott's coll., 

 Breslau."' Rossi notes (Ins. Parse, xix., p. 369) that Jorgens, 

 in 1890, fed up larvae of porcellus and elpenor on a patch of Galium 

 in his garden, covering them with a basket and allowing them to 

 pupate on the spot. In May or June, 1891, he found under the 

 basket a £ porcellus, in cop. with a 2 elpenor. He allowed the 

 $ to oviposit under the basket, and in August had three halfgrown 

 larvae, of which only one pupated, and produced a fine hybrid 

 imago in January, 1892, which was sold to Heyne, and a figure 

 of which is reproduced (loc. cit.). He describes the imago as 

 having the wings and the form of the body nearer elpenor than 

 porcellus. In size it is intermediate — 57mm., as against 68mm. for Rossi's 

 largest elpenor, and 48mm. for his largest porcellus. Body coloured 

 much as in elpenor, thorax olive-green with rose-red stripes, abdomen 

 green in middle, red at side and tip ; the median red stripe which divides 

 the green central area of abdomen in elpenor is hardly visible. The 

 forewings are olive-greenish, the inner oblique violet-red stripe ' of 

 elpenor is more yellow-reddish, towards the margin there are three 

 additional darker green oblique stripes. The white longitudinal 

 stripe which elpenor has at base of inner margin is present, but 

 seems to be more reddish-white. The costa is narrowly margined 

 with rose-red, the outer margin broadly with the same colour, 

 while in elpenor it is violet-red. The hindwings resemble those of 

 porcellus ; they are black at the base, yellowish in the middle, rose- 

 red at the border, the black at the base is, however, darker than in 

 porcellus. 



2. Hyles hybr. kpilobii *, Bdv., Rbr. and Gras., "Icon. Chen. 

 Spiling.," pi. ix., fig. 2 (1832); Bdv., "Icon.," ii., p. 24, pi. 51, fig. 3 (1834); 

 "Spec. Gen.," i., p. 177 (1875); Dup. "Hist. Nat.," supp. ii.. p. 123, pi. 

 xii., fig. 1 (1835); H.-Sch., "Sys. Bearb.," ii., p. 89, fig. 9 (1846); Staud., 

 "Cat.," 2nd ed., p. 36 (1871); 3rd cd., p. 101 (19011 ; Hofm., " Gross- 

 Schmctt.," &c , )). 29, pi. xvii., fig. 1 b (1884); "Raupen," &c, p. 285, 

 pi. xlviii., fig. 11 (1893); Kirby, "Cat. Het.," p. 668 (1892); Stdfss.. "Hand- 

 bnch," &c, pp. 54, 63 (1896); "Exp. Zool. Stud.," p. 43 (1898 ; Schlumb., 

 "Mitt. Muni. Ent. Ver.," no. 12, pp. 1 - (> (1897)5 no. 13. pp. 2 — 4 (1898 : 

 Bart., "Pal. Gross-Schmett.," ii., p. 63 (1899); Mory, "Mitt. Schw. Ent. Ges.," 

 x., ]>. 33, figs. 2 — 3 (1901). — Imago: Alis anticis subcinereis fascia obliqua cxtus 

 angulosa ad apicem, alteri basali, macula media obsoleta thoraceque, cinereo- 

 olivaceis ; posticis rubroincarnatis basi limboque nit:ti>, Angulo anali albido; omnibus 

 subtus roseis extimo cinereo, anticis macula media, obliqua nigra {Icones, ii., p. 24. 

 pi. Ii., fig. 3). Larva : Nigra flavo lateraliter punctulata, maculis seriatis, 

 rotundatis, flavis; fascia laterali interrupta vol subnulla rubra; capite cornuque 

 minuto, minis. The great rarity of tins larva, its colour and its markings, prove 



* Assumed parentage J eupkorbiae x ? ve&pertilio. The larva- were taken 

 on Epilobiu/N, the food of the last-named species. 



