( 7:5!) ) 



F. F. Feiiii. X. p. (•). II. 95 (1809); Heyl., Tijdsrhr. Fiit. xni. p. 140. u. 74. t. 0. f. 1 (1.S70) 



(Breda, var.) ; Vol!., ;4irf. p. 158(1870) (same var.) ; Goosa., Ann. S„<: /?«/. F/v»».r p. 118 ( 1H71) 



(larva var.) ; Siebke, Fii. Jiix. Norr. in. p. 24. n. 3 (1874) ; Megn., Bull. Soc. Eat. Fmiice p. 53 



(1875) (grey var. ; Digne) ; Bell., ibiil. p. 78^(1875) (grey var. ; Digne) ; Stand., Ilor. Soc. E/if. 



A,s.v. xiv. p. 208 (1878) ; Fall., IMI. Sor. Ent. Fmrwe p. 70 (] 8711) (var. ; not red) ; Kill., Jahrh. 



Nol. Gcs. Grauh. xxiii. p. 45 (1880) ; Albr., Bull. Moxm,, p. 379 (1882) (Moscow) ; Rom., .Mem. 



Up. i. p. 71 (1884) (Tiflis ; Borjoum ; v. vi.); Lampa, Ent. TUhhi: vi. p. 27. n. 117 (1885) ; 



Kill., I.e. xxix. p. 8 (1880) ; Amel., Bed. Ent. Zeltxch: xxxi. p. 261 (1887) (Dessau) ; Hofm., 



Rdiip. Grosssvhm. p. 29. t. 8. f. 2, t. 50. f. 18 (1893) ; id., Grossschm. p. 30. n. 12. t. 18. f. 1 



(1894) ; Kill. & Cafl., Jnhrh. Nat. Ge.-: Graiib. xxxviii. App. p. 20 (1895) ; Vos, Tijihrhr. Ent. 



xli. p. 80 (1898) (Apeldoorn) ; Bartel, in Riihl, Gvnss^chm. ii. p. 123 (1900). 

 T/ierclra jiorrollm, Hiibner, Verz. bek. Schm. p. 135. n. 1448 (1822). 

 Siihijiu- pnrcclliix, Vogel, Schmett. Cub. ii. p. 19. t. 7. f. 5. a. b (1822). 

 ('IiocroL-aiiipa purcclliis, Duponchel, in God., Pa/). Frtiwe, Siijipl. ii. p. 160 (18:')5); Woslw. i*t 



Humpbr., Brit. ifotU i. p. 23. t. 23. f. 9. 10 (1843) ; Wallengr., Skand. Het. Fjiir. p. 40. n. 2 



(1803) ; Boisd., S/jec. Gen. Up. Het. i. p. 280. u. 78 (1875). 

 reryem purcclhix. Walker, Lid Lep. Inx. B. M. viii. p. 150. n. 1 (1850) ; Butl., Tran>^. Znnl. Snr. 



Lund. ix. p. 547. n. 1 (1877). 

 Chacrorampa poirellun, Barrett, Lep. Brit. h. ii. p. 55. t. 52. f. 2. 2a (1893) ; Weism., ed. Meld., 



Stud. Theor. Desc. i. p. 184. t. 4. f. 24—28 (1882) (larvae). 

 Metupsilm porcellus, Duncan, in Jard., Nat. Libr. xl. p. 103. t. 11. f. 2 (1843); Kirby, Gd. Lep. I/el- 



i. p. 600. n. 11 (1892) ; id., in Allen, A'<(/. Libr., Moths iv. p. 26. t. 98. f. 2. 3 (1897) ; Stand. 



& Reb., Cat. Lep. ed. iii. p. 104. n. 701 (1901). 

 Deilejihila porcelliis yar. mellin', Oudemans (iion Staudinger, 1878), Tijdschr. Ent. xlii. p. 21 (1899) 

 (Holland). 



c??. Tlie three insects porcellus, suellns, and askoldensis come so near each 

 oilier that we were at first iucliued to treat them as geographical races of the same 

 species. Snellus connects porcellus completely with askoldensis when closely 

 comjiared, combining characters of the one with characters of the other. However, 

 yyWYrW«5 and A7a'//«s occur together and are always different. From this we must 

 conclude that they are independent of one another, i.e. are specifically distinct. If 

 the differences between porcellus and suellus are of specific value, then we have no 

 right, we think, to regard the differences between suellus and askoldensis otherwise 

 tlian being also specific, although the similarity of suellus with askoldensis is a 

 little more marked than between suellus and porcellus. Sexual armature scarcely 

 diffei'ent in the three insects. 



Red colour of forewing occasionally absent. Marginal band of hindwing, above, 

 rarely blackish. 



c?. Tenth tergite convex at tip, feebly hooked in lateral aspect, about half the 

 width of the sternite ; this truncate with the angles rounded. Clasper broad ; 

 about a dozen friction-scales ; process of harpe rather shorter than in elpcuor 

 elpenor ; dentate ridge of penis-sheath also shorter. 



Ocelli of larva rounded ; horn vestigial. 



Pupa much slenderer than that of elpenor, more than three times as long as 

 l)ioad ; tubercle in front of eye pointed ; abdominal belts of tubercles curved basad 

 in middle, the tubercles here less high and more numerous than laterally. 



Hub. Europe, eastward to Asia Minor and Transcaucasia. 



A series of larvae, pupae, and imagines in the Tring Museum fiom various 

 ]ilaces. 



(hSiS. Pergesa suellus. 



neilephila porceUus var., Leder, Ann. Soc. Enl. Behj. xiii. p. 28 (1809) (Hank^nda ; As. m.). 

 DeilephUa porceUux var. ? suellus Staudinger, ITor. Soc. Ent. Roi<s. xiv. p. 298 (1878) (Ama^ia). 

 Deihphila porcellus var. s!(eW«.s, Romanoff, Mem. Lep. i. p. 71. t. 4. f. 1 (1884) (Titlis ; Borjoum : 

 Lagodekhi ; Istissu ; Suanetie ; together with 7)';)re//ws !). 



