270 HYBRIDS OF SPHINGID.E. By Dr. P. Den so. 



vespertilio, but the forewing is darker grey. ■ — There occur among the main form of hybr. eugeni also specimens 

 rubescens. suffused with red, which we unite here as f. rubescens /. w. ■ — ■ The larvae are extraordinarily variable; they 

 were found at Hueningen on Epilobium dodonaei Villars (= rosmarinifolium Hoclist.) and stand on the whole 

 in between the catei-pillars of hj'br. epilobii and vesj)ertiUo. The horn is very small or absent. — Only obtained 

 in nature. 

 burkhardti. C. hj'br. tert. ord. burkhardti Monj (Celerio hybr. sec. ord. eugeni Morij ^ < Celerio vespertilio Esp. 5). 



Exceedingly close to vespertilio, only distinguished from it by the atavistic line which runs from the apex to 

 the hind margin parallel with the inner edge of the oblique band, as well as the central and outer costal spots 

 being distinct. Moreover the base of the forewing is paler grey, and the distal dentate border of the oblique 

 band contrasts distinctly with the paler marginal area. The black submarginal band of the hindwing is fartiier 

 away from the margin. The underside of the wings as in vespertilio. — The larvae, which were found on Epilo- 

 bium dodonaei Villars (= rosmarinifolium Hochst.), closeh' resemble those of vespertilio p.ccording to Mory, 

 but recall euphorbine in some characters. They have no horn, but bear a small tubercle instead. — Only found 

 in nature. 

 johni. C. hybr. johni Denso (Celerio f. wagneri Dense .^ x Celerio gnllii gallii Bolt. 9). This hybrid is remarkably 



different from the very closelj' related hybr. kindervateri. First of all, the moths are on the whole much paler 

 above as well as beneath. The light olive-green costal border is narrower, and the central and outer costal spots 

 are distinct; the apex of the costal margin is light lilac grey. The central area is broader than m kindervateri 

 and much lighter yellowish brown. The obliciue band extends more basad at the hind margin and is very irre- 

 gularly dentate or imdulate at both the inner and outer edges. Especially noteworthy is a yellowish brown 

 light cloud appearing in most specimens in the lower portion of the band. The distal margin is lilac grey like 

 the apex of the forewing (almost the same colour as in livornica). The hindwing, too, is very different from 

 that of kindervateri. The red colour is much paler, usually shading into yellowish pink at the costal margin, 

 and is usually variegated with olive-green distalty along the submarginal band. The white anal spot is brilliant 

 white and almost exactly circular. The black submarginal band is very irregular in shape, usually small black 

 streaks or spots project from it into the red band. The marginal area is yellowish pink, and the veins are 

 thinly black within it in all the known (10) specimens. The abdomen has usually only a feeble dorsal line, and 

 the white segmental incisions are less prominent than in kiridervateri. The underside is generally yellowish, 

 rarely bearing a pink flush. — Larva very similar to that of galiphorbiae, but the second subdorsal row of spots 

 is usually absent or but slightly indicated. There are now and again feeble traces of the subdorsal line. 



jullieni. C. hybr. (sec. tert. ord. ?) Jullieni Z)eMso. This highly interesting moth is presumably the product of a 



cross between gallii and vespertilio. It differs but little from vespertilio. The ground-colour is more black-brown, 

 the proximal edge of the oblique band is very distinctly marked, likewise the middle costal spot. The transver.se 

 band of the hindwing is pale pink inclining a little towards yellow, the anal spot circular, paler. The submar- 

 ginal band blackish grey, diffuse, farther away from the margm than in vespertilio; margmal area dull pink. 

 Underside as in vespertilio. The abdomen bears only two pairs of black side-spots, the usually white-coloured 

 hair on the sides is here yellowish. Pulvillus distinct. — The larva, which was found in the Valais in the same 

 place as larvae of vespertilio, was black with many small red dots, brigiit red subdorsal spots, no dorsal line, 

 and a very short horn, which was half black half red. 



walkingi. C. hybr. walkingi Turati [C. f. (hybr.) giesekingi Titrati (^ xC. f. (hybr.) ivalteri Turati $). Costal margin 



of forewing darker than in euphorbiae, some of the veins pale in the oblique band. The atavistic line in the 

 marginal area of the forewing usually distinct. Underside of wings red. Thorax without white border to the 

 patagia. Dorsal line sometimes indicated. The third pair of the black and white abdominal spots always pre- 

 sent, but sometimes very weak. 



ffrossei. C. hybr. grossei Denso (C. hybr. galiphorbiae Denso (^ xC. euphorbiae euphorbiae L. $). Strongly recalls 



euphorbiae, but the costal border to the forewing is darker, the costal spots resemble the scheme of markings 

 of gallii. On the hindwing the red band is slightly paler at the anal margin. Antennae partly pure white, partly 

 light olive. 



helenae. C. hybr. helenae Grosse {C. hybr. galiphorbiae Denso ^ x C. gallii gallii Rott. $). Differs from gallii, 



which it closely resembles, in the shape of the oblique band, which extends much less basad, and in the broader 

 marginal area of the hindwing. Antennae of ,^^ greyish olive with white apex, those of $$ pure white. 



kindergallii. C. hybr. kindergallii Grosse {C. hybr. kindervateri Kysela ^ x C. gallii gallii Rott. ?). Forewing very 



much like that of gallii in markuig and colouring; hindwing more similar to tliat of euphorbiae. 



Mppoides. C. hybr. hippoides Z)emso (C.hippophaes hippophaes Esp. o x C. hybr. hippophorbiae Denso $). Similar 



to a very T^ale hippophaes, but the basal costal spot of the forewing is not produced into a pointed projection; 

 moreover, the middle costal .spot, which is a mere smear in hippophaes, is more strongly developed. 



