On the Species of the Genus Hebomoia. 289 



we have examined (B. M, coll. no. 96. 9. 23. 5) reaches a 

 total length of only 127*5 millim. The females exhibit the 

 same characters, but are smaller. In conclusion, it may be 

 noted that we have examined specimens from Kamtchatka, 

 the Aleutian and Commander Islands, Lapland, Norway, 

 Spitzbergen, Iceland, and Greenland. 



Dimensions of the type of C. lagopus spitzbergenensis, a 

 female collected in Spitzbergen by Dr. J. W. Gregory (B, M. 

 coll. no. 9G. 9. 23. 3) : — Basal length 109 millim. ; greatest 

 length 118*5; greatest breadth 6(3; length of palate 56; 

 length of nasals 38 ; length of lower jaw 86. 



XLIX. — A Review of the Species of the Genus Hebomoia, a 

 Group of Pierine Butterflies. By ARTHUR G. BuTLEK,, 

 Ph.D., F.L.S., F.Z.S., &c. 



This genus, of which the Museum collection now contains all 

 the known forms, consists chiefly of a series of fairly well- 

 defined geographical modifications, mostly inhabiting different 

 islands, and consequently exhibiting a degree of constancy in 

 their often slight distinctive characters which gives them some 

 title to be regarded as diverse species. Several of these 

 species were named by Wallace in 1863, in a paper published 

 by him in the * Journal of Entomology ' ; but in his " Re-. 

 vision of Oriental PierinjB," published four years later in the 

 ' Transactions of the Entomological Society/ he ignored all 

 but two of them, not even quoting the names which he had 

 given, in his synonymy. 



It has been generally considered that one species of Hebo-. 

 moia is distributed over the whole of India, Burma, China, 

 and Ceylon ; but a study of our present fine series has con- 

 vinced me that this is not correct, inasmuch as the forms of 

 Northern and Southern India differ quite as much as typical 

 H. glaucippe does from its representative forms in some of 

 the islands. 



The seasonal forms of Hebomoia do not seem to be very 

 strongly defined even on the Continent, and probably in the 

 insular species they are unrepresented. 



I. H. glaucippe group. 



Wings above milky white, rarely tinted towards the borders 

 with brimstone-yellow : primaries of males with a broad trian- 

 gular orange apical patch, broadly bordered externally and, 



Ann. & Mag. N.Hist. Ser. 7, VoI.\. 22 



