1892.] THE NAGA AND KAREN HILLS AND PERAK. 657 



Casyapa PHAN^US. 



G.phaneeus, Hew. Descr. Hesp. p. 14 (1867) ; Dist. Rhop. Mai. 

 p. 386, t. XXXV. 18. 



There are two forms of this species which seem very distinct, if their 

 colour only is regarded ; but I cannot see any difference in the 

 markings by which to separate them. The one figured by Distant is 

 bright orange-brown ; of this form I have two pairs from East Pegu 

 sent by Doherty, which agree with his type of C. lalita in my col- 

 lection, taken in the Chittagong Hills. 



Of the other form, which is of a much darker, more chocolate- 

 brown, I have two females from Perak which agree with Hewitson's 

 type from Borneo, and two males from Pulo Laut, Borneo. Celcenor- 

 rhinus omeia. Leech, from West China, is nearly allied, but is olive- 

 brown and shows no black spots on the hind wing. 



HiDARI IRAVA. 



Hesperia irava, Moore, Cat. Lep. E. I. C. vol. i. p. 254 (1857). 

 Hidari irava, Dist. Rhop. Mai. p. 395, t. xxxiv. 15 $ . 

 Several specimens from Perak. 



HiDARI STAUDINGERI. 



H. siaudingeri, Dist. Rhop. Mai. p. 395, t. xxxv. 25. 



A single male from Perak which agrees with Distant's plate. 



Plastingia callineura. 



Hesperia callineura, Feld. Reise Nov. iii. p. 513, t. 719. 10 

 (1866). 



? Hesperia latoia, Hew. Ex. Butt. Hesp. t. 6. 62, 63 (1868). 



1 Plastingia helena, Butl. Trans. Ent. Soc. 1870, p. 511. 



Doherty sent two large males from Perak which agree with 

 Felder's plate. Also a smaller specimen which may belong to a 

 distinct species, and if so will bear the name H. latoia. Hew., or 

 P. helena. Bull., as it agrees with the type of that species from 

 Sarawak and with others from Pulo Laut, Borneo. 



There appears to be much variation in this genus, and I can see 

 no characters which seem sufficiently constant to separate these 

 forms. 



Var. MARGHERITA. 



Plastingia margherita, Doh. J. A. S. B. 1889, p. 131, t. x. 5. 



I have the type of this species together with another from the 

 Naga Hills and three from the Karen Hills. On the Naga specimen 

 is a ticket in Doherty's handwriting, "probably not distinct from 

 H. latoia, Hew." I may say, however, that though I cannot follow 

 the characters given by Doherty in separating P. margherita from 

 P. callineura, I can distinguish all these five specimens from any I 

 have from Perak or Borneo by the colour and pattern of the under- 

 side, though none of them are quite fi'esh specimens, and I believe 

 it will be found that this form is constant as a local race, if not as 

 a species. 



