18 Mr. A. G. i^Litler on Japanese 



Papilionidae. 



PlERIN^. 



24. Terias suava. 



Terias suava, Boisduval, Sp. Gen. i. p. 670 (1836). 



One male, Yokohama, in August. 

 A narrow-winged Chinese species. 



25. Terias Mariesii. 



Terias Mariesii, Butler, Trans. Ent. Soc. Loudon, 1880, p. 198. 



One female, Yokohama, in August. 



It is singular that the rarer sex only of this species should 

 have been obtained. 



26. Terias Tluhsoni. 



Terias Hohsoni, Butler, Proc. Zool. Soc, 1880, p. 668. 



Two females, taken in Yokohama in August. 

 This species has hitherto only been known to occur in For- 

 mosa. 



27. Colias 'pol'uxjraplius. 



Culias poliof/raphus, Motschulskj, Etudes Entom. ix. p. 29 (1860). 



Hakodate and Kobd, July. 



28. Colias simoda. 

 Colias simoda, De TOrza, Lep. Jap. p. 16 (1869). 



Hakodate, in July. 



This Colias is difficult to separate from the preceding when 

 one has a large series to examine, owing to the tendency to 

 hybridization known to exist between close allies in this 

 genus ; typical examples of the two forms are readily recog- 

 nizable. It is of course possible that C. jjoliographus and 

 C. simoda may belong to one variable species; but they must 

 be carefully reared from the Qg^^ before one can with fairness 

 assert their identity. 



29. Ganoris cructvora. 



Tier is hrassiae, var. crucivora, Boisdiival, Sp. Gen. i. p. 523 (1830). 

 A pair taken at Hakodate in July. 



30. Ganoris dulcinea, sp. n. 

 Most nearly allied to G. megamera of Japan, but very 



