1888.] LEPIDOPTERA OF JAPAN AND COREA. 



585 



18. CiNOGON ASKOLDENSIS. 



Smerinthus askoldensis, Oberth. Etud. d'Entom. v. p. 251, pi. i. 

 fig. 3 (1«80). 



Cinogon dngulatum, Butl, Trans. Ent. Soc. 1881, p. 2. 



Two specimens in Pryer's collection, one of which is labelled 

 Oiwake. These agree well with Oberthiir's figure of S. askoldensis 

 and also with Butler's description of G. dngulatum. 



Oiwake, Japan {Fryer) ; Askold, Hakodate {Andrews). 



19. ACOSMERYX ANCEUS. 



Sphinx anceus, Cram. Pap. Exot. iv. p. 124, pi. 355. f. A. 



Emjo anceus, Hiibn. Verz. Schmett. p. 132. 1423; Walk. Cat. 

 Lep. Het. viii. p. 119. 



Acosmeryx anceus, Butl. Trans. Zool. Soc. 18"6, p. 544, pi. 90. 

 figs. 11 & 12 (larva and pupa). 



Acosmeryx metanaga, Butl. Ann. & Mag. Nat. Hist. (5) iv. 

 p. 350 (1879). 



Pryer says that this species is common at Yokohama, in which 

 locahty the eight examples in his collection were probably obtained. 

 In some specimens there is no trace of yellow in the discal spot ; but 

 as this spot is really a small tuft of raised yellow scales surrounded 

 with a more or less distinct fuscous ring, absence of the yellow may 

 be due to condition of the specimens. 



Yokohama {Pryer) ; Kiukiang {Pratt) ; Amboina. 



20. Ambulyx schatjffelbergeri. 



Ambulyx schauffelbergeri, Brem. & Grey, Beitr. zur Schmett. 

 Nord. China's, p. 53. 



I got a specimen at Nagasaki in June ; three coll. Pryer and two 

 from Mr. Manley. This is probably a local form of A. substrigilis, 

 Westw., as possibly are also A. maculifera and A. consanguis, Butl. 

 The Japanese insects agree very well with the last-named, but the 

 transverse lines are not clearly defined. 



Nagasaki {Leech) ; Yokohama {Pryer and Manley) ; North China. 



21. Triptogon sperchius. 



Smerinthus sperchius. Men. Enum. Lep. Mus. Petrop. p. 137, 

 pi. 13. fig. 5 (1857). 



Triptogon piceipennis, Butl. Ann. & Mag. Nat. Hist. (4) xx. 

 p. 393 (1877); 111. Typ. Lep. Het. pt. ii. p. 2, pi. xxi. fig. 4 

 (1878). 



Triptogon gigas, Butl. Proc. Zool. Soc. 1875, p. 253; 111. Typ. 

 Lep. Het. pt. v. p. 12, pi. Ixxx. fig. 5 (1881). 



(Pryer records the larvae as feeding on chestnut in the neighbour- 

 hood of Yokohama.) 



In tone of colour, curvature, angulation, and distance apart of the 

 transverse linear markings this species exhibits much aberration. 

 With the exception of an example I took at Tsuruga in July, and 

 one sent me by Manley from Yokohama, all my specimens are from 



