NOTES ON MESAPIA PELORIA AND ITS ALLIES. 99 



costal dash on the primaries, which hardly looks like typical 

 H. gaosalis, and may be the specimen intended. It is not, how- 

 ever, congeneric with Grote's H. petrealis, because its antennae 

 are shortly pectinated and without nodosity. 



Prof. Smith will probably point out that his lines end with a 

 full stop, and therefore that the specific name which follows 

 belongs to the reference on the succeeding line. This may be 

 so, but then what becomes of the first reference following the 

 specific name P. Goasalis, Wlh. (sic), and which has nothing what- 

 ever to do with the species, inasmuch as the page quoted does 

 not include either of the forms quoted as belonging to Philometra. 



To my mind the simplest form of reference, and that least 

 likely to lead to mistakes, is that usually adopted in England. 

 This would give Walker's species thus : — 



Herminia metonalis. 



Herminia metonalis, Walker, Cat. Het. xiv. p. 236. 



Epizeuxis gaosalis, Walker, Cat. Het. xix. p. 876. 



Philometra longilabris, Grote, Tr. Am. Ent. Soc. iv. p. 99. 



Nova Scotia and Hudson's Bay. In B. M. 



As before stated, I should be much astonished if none of these 

 inaccuracies existed in Prof. Smith's very admirable work ; they 

 could hardly be avoided. But, in a later edition of the Catalogue, 

 whenever a further revision is needed, they ought to be corrected. 

 Therefore I feel that they should be at once recorded. No true 

 entomologist is ever impatient of just criticism, but desires 

 before all things to arrive at the exact truth ; and, as regards 

 the points adverted to in the present communication, anyone 

 who has a copy of Walker's Catalogue can test their accuracy 

 for himself. 



NOTES ON MESAPIA PELORIA, Hewitson, AND ITS 



ALLIES. 

 By W. F. Kirby, F.L.S., F.E.S., 



Assistant in Zool. Dept., British Museum (Nat. Hist.), S. Kensington. 



"Green-veined white" butterflies are very numerous in 

 Central Asia, and in 1853 the late Mr. Hewitson described a 

 curious insect from Chinese Tartary, respecting which he re- 

 marked : " This species, except that the nervures are different in 

 their arrangement and the antennae longer, has more the ap- 

 pearance of a Parnassiiis than of a Pieris, and would probably 

 be more naturally placed in that genus. It is at any rate an 

 admirable link by which to connect the two genera. It flies at a 

 great elevation on the mountains of Chinese Tartary." 



In 1887 Alpheraki re-described this species from N. E. 

 Thibet, under the name of Aporia lama. 



