Lord Walsingham on Asiatic Tortricidse. 869 



from the smaller area of Japan may in some degree accoun 

 for an impression whicli further research may prove erroneous 

 A curious instance of structural divergence, scarcely amount- 

 ing to special difference, occurs in the familiar Olethreutes 

 arcueUa, Clerck. The late Dr. Clemens founded the North- 

 American genus Exartema on the strength of a lobe dependina: 

 from the limbus in the hind wings, a character not occur- 

 ring in the genus Penihina,Ti\ (Stgr. Cat.). The Japanese 

 specimens of arciieJla, altliough identical with British examples 

 in colour and markings, have a short lobe in the position 

 occupied by that of Exartema, and a careful examination of 

 English specimens reveals the fact that the same excrescence 

 exists here in an aborted (or undeveloped) form : thus the 

 Japanese Olethreutes closely approaches Exartema and tends 

 to connect our arcuella with the species of that genus existing 

 in the Western and Eastern States of America, some of 

 which occur also in Japan. 



In sending for publication a few descriptions of new 

 Asiatic Tortricidw, I renew the expression of my grateful 

 thanks to my numerous correspondents. 



In all cases where specimens have been purchased from 

 Dr. Staudinger, I have adopted his or Herr Bang Haas's MS. 

 names with a view to facilitate identification, although I 

 had previously named the species differently in my own MS. 

 descriptions from specimens already in my collection. 



OXYGRAPHA, Hb. 



n. syn. = RHACODiA, Hb 



§PEJJO.VXi,Crt., =tOii'ffi!-lPiW,Hb. tOXYGRAPHA,Wilk.,=RHACODIA, 



Hb.,= TETiAs, Tr.,=*T£ias, Hein.,=*^c'^ii.i, Meyr. 

 In the European lists the emargination of the costa in the 

 fore wings is relied upon as a generic character for separating 

 Bhacodia, Hb. { = Teras, Tr.) from ^Teras, Hein., &c. 

 Prof. Fernald in his Catalogue of North-American Tortri- 

 cidse (1882) included both forms in Teras, Tr., evidently 

 regarding the amount of excavation as only a special character. 

 If any doubt existed as to the correctness of Prof. Fernald's 

 action, full justification will be found among the species now 

 described, some of which are intermediate between Bhacodia, 

 Hb., and Teras, Hein,, and might be referred to either. 



649 (1). Oxijgrapha quadridentana, sp. n. 



Antennce dull fawn-grey. [Palpi missing.] Read pale 

 fawn-colour. Thorax reddish fawn-colour, posteriorly paler. 

 Fore icings reddish green; the convexity on the costa adorned 

 with four conspicuous teeth or tufts of scales, the first and 



Ann. & Mag. N. Hist. Ser. 7. Vol. v. 24 



