322 Dr. Eiiiar Lonnberg — Notes on Arctonyx. 



coll. Brit. Mas., preseiite:! by tlie Riffles Miiseum aiil 

 Library, to whose energetic Director, Major J. C. iMoulton, 

 O.B.E., T.D., B.A., M.Sc, I have dedicated the species. 



20. Plutodes ivarreni, sp. u, 



Plutodes costatus, Warr. Proc. Zool. Soc. Lond. 1893, p. 388 (nee Biitl.). 



Smaller than costatus, Butl. ( — triangularis, Warr.), an- 

 tenual pectinations rather less long, colouring slightly paler, 

 antemedian triangle larger, with antemedian line from its 

 distal side, postraedian triangle normally narrower than in 

 costatus, variable, very occasionally continued narrowly to 

 join tornal patch ; apical patch of hind wing separated from 

 ground-colour by a "manifestly sinuous" (or indented) 

 dark line ; underside more weakly marked, the oblique dark 

 central line of fore wing almost obsolete. 



N.W. India : Sabathu, type (^ and 4 $ $ in coll. Brit. 

 Mus., 1 c? in coll. Tring Mus. 



To Mr. Warren belongs the credit of discovering that 

 there were two species mixed under the name of costatus, 

 Butl., but he unfortunately overlooked that the true costatus 

 (Darjiling) was the same form which he so carefully 

 differentiated as triangularis {loc. cit. supra, Sikkim and 

 Assam), and that it was the N.W. Himalayan which really 

 required a name. 



XXXVI. — Notes on Arctonyx. 

 By EiNAR Lonnberg, F.M.Z.S. &c. 



Arctonyx leucolceinus mibie-edwarddij subsp. n. 



In his well-known work ^ Recherclies des Mammiferes^ 

 (1868-1874) A. Milne-Edwards mentions and shortly de- 

 scribes (p. 340) a specimen of Arctonyx, which he had received 

 from southern Sliensi among other collections from 

 '^ M. I'abbe David." One of the most important charac- 

 teristics of the skull of this animal was that it was provided 

 with a small premolar more than other specimens of Arctony.v. 

 The R. Nat, Hist. Museum in Stockholm has recently 

 received a specimen of Arctony.v, which has been collected 

 15. X. 1921 in the Minshan Mountains in southern Kansu by 



