264 Hybrids of Spliingidae. By Dr. P. Den so. 



])al(' grey sjx'cirnons. Ground-colour very variable, usually light white-grey, but soinetiine.s slaty grey. One 

 specimen bright coppery red. In the whitish grey examples the red-brown l)asal patch of the hindwing is visibly 

 reduced. Generative glands strongly atrophied. Expan.se: ^ <>7 to 82 mm, 9 67 to 82 mm. 



C. Secondary Hybrids. 



(All <iiily obtained in captivity). 



datihi. S. hyltr. daub! Stand f. {Smerinthu.s ocellata ocellutd L. £ x Amorpha populi i. (hybr.) langi Standf. $). 



Two obviously different series were bred from two pairings. The first series contained, besides two gynandro- 

 morphic examples, only ,^^ ex])anding 68 to 84 mm ; distal margins strongly dentate, undulate lines very strongly 

 marked; the blue ocellus of the hindwiiag and the thoracic median spot are strongly obsolescent; the ground- 

 colour is lighter or darker slaty grey. The second series contains only normal-sized (J (J of 79 to 89 mm expanse; 

 the dentition of the distal margins indistinct, midulate lines but little sharp or diffuse, ocellus of the hindwing 

 large but dull; on the middle of the thorax a distinct darkening; the ground-colour a peculiar bluish grey. 



pkil'iiipsl. A. hybr. philippsi Standf. {Amorpha populi f. (hybr.) dnriciniana Standf. ^ x Smerinthus ocellata 



ocellata L. $). Only (J^J of 74 to 91 mm expanse were obtained. Ground-colour dark blackishgrey with a slight 

 violet tint. Distal margins u.sually obviously sinuous, the undulate lines sharj^ly defined and distinct; tlje 

 black anal patch of the hindwing is exceptionally large and very deeply coloured, the blue ocellus placed in it very 

 variable in size. The dark thoracic spot usually strongly developed. 



emiliae. S. hyhi'. emlliae Standf. {Smerinthus ocellata ocellata L. (^ x Amorpfia. populi f. (hybr.) darwiniana 



Standf. '+). Two j^ of 74 and 77 mm expanse. Very narrow-winged, delicate moths, with only slight indi- 

 cations of oceUata-mp,rkmg>i. Distal margins of wings undulate-dentate; the blue ocellus of the hindwing only 

 feehly indicated and diffuse; the thoracical spot entirely absent; undulate lines not sharply defined; ground- 

 colour sonu'what |)aler than in noi-nial ikijihU. 



II. Hybrids of tlu' noiicra ('('lorio niul Pcriiosa. 



A. Crosses between races of the Celerio euphorbiae group. 



waltcri. C. f. (Ii_\l)r.) walteri I'nrati {Celerio euphorbiae dahli Hbn.-G. ,^ /, Celerio euphorbiae eupliorbiae L. $). 



The motli entirely resembles in facies a pale dahli, having inherited from dahli particularly the following cha- 

 racteristics : above <dl the 3 pairs of very distinct lateral abdominal black spots, which are present in all specimens, 

 further the prominent white border of the patagia, and the feeble white dorsal line. Also the strongly white- 

 scaled veins are a dahli-c\\a,ra,ctev, though they occur also not very rarely among euphorbiae. Further, the shape of the 

 basal costal s{)ot of the forewing is derived from dahli, as well as the small, linear spot, which is more directed 

 towards the centre of the wing and is exceedingly rare in euphorbiae. Some traces of the atavistic line *) are visible. 

 From euphorbiae are derived especially the shape of the two spots near the base and middle of the costal margin 

 and the broad pale median area. The underside of the wings closely resembles that of dahli. Only obtained 

 in captivity. 



wagmri. C. f. (In'hr.) wagiierl Denso {Celerio euphorbiae mauretanica Stgr. (J x Celerio euphorbiae euphorbiae 



L. $). This cross strongly recalls mauretanica. The costal margin is very broadly olive-green, much more broadly 

 so than in f. (hybr.) waUeri, the distal costal spot being completely absorbed by this border and the median 

 costal sj)ot confluent with it. 'Ilie small spot near the basal patch is distinctly marked. The distal edge of the 

 oblique band is not so dentate as in euphorbiae, but is shaped more nearly as in mauretanica. The red of the hind- 

 whig, too, is of the same tint as in mauretanica. The black basal area of the hindwing as well as the black sub- 

 marginal band are particularly strongly developed. The underside of the wings with a feeble yellowish pink 

 tint, without markings. — Only obtained in captivity. 



giesekinffi. C. f. (hybr.) ghsek'mgi Turati {Celerio euphorbiae euphorbiae L. i^ x Celerio euphorbiae dahli Hbn.-G. $). 



This cross, the inverse of f. (hybr.) walteri, distinctly inclines towards euphorbiae, although it also po.ssesses 

 fZa/iK-characteristics, but in a lesser degree than ivalteri. The olive-green colour of the costal margin of the 

 forewing is almost as in ivalteri, but the distal costal spot more nearly resembles that of dahli. The small 

 accessory spot near the base, an inheritance from dahli, is feebly marked. The patagia are not bordered with 

 white; the dorsal line is not present, and the third pair of abdominal spots, which is so characteristic of dahli 



*) III pure species, but more frequentlj- in Hybrids, there occurs often an atavistic line which is most strongly 

 marked at the distal costal spot placed at Vj and runs from there to the hindmargin, being nearly parallel with the prox- 

 imal margin -of the obUque band. 



