APPENDIX. 361 



Genus SITTA. Type by monotypy : S. europcea Linn. 



Sitta caesia. Hartert (Brit. Birds, i. 1907, p. 128) Las separ- 

 ated the British Nuthatch from that o£ Germany, calling 

 the former Sitta europcea hritannica, the latter S. e. ccesia. 

 The Committee are unable to distinguish these two 

 races. 



Genus REGULTJS. Type by tautonymy : R. reyidus (Linn.). 

 This genus may be accepted as of Cuvier, though its 

 introduction by that author is perhaps hardly in accord- 

 ance with the rules as laid down in the international 

 code. See Eritliacus^ p. 366. 



Regulus regulus. This name is changed under the rule 

 admitting tautonymic names. The British Goldcrest is 

 considered a distinct subspecies by Hartert (Bull. 

 B. 0. C. xvi. 1905, p. 11), but the Committee are un- 

 able to uphold this. 



Genus PANURUS. Type by monotypy : P. hiarmiciis 

 (Linn.). 



Genus PARUS. Type by subsequent designation o£ Gray 

 (List Gen, Bds. 1st ed. 1840, p. 23) : P. major Linn. 



Genus JEGITHALUS. Type by monotypy : Ji. caudatus 

 (Linn.). Spelled in the original description ^iiV/iiAaZos. 

 This genus dates from 1804, twelve years before Koch 

 introduced his Acredula used in the 1st edition of the List. 



Genus LANIUS. Type by subsequent designation of Swain- 

 son (Zool. Journ. i. 1824, p. 294) : L. excubitor Linn. 



Xanius senator. The oldest name for this species is un- 

 doubtedly that here used, dating from 1758. Un- 

 fortunately Linnaeus gave " in Indiis " as the habitat. 

 On referring to Albin (Birds, ii. 1738, p. 15), on which 

 Linnseus founded the name, we find that the only 

 locality given is the River Rhine, whence Willughby 

 described it. On this account Hartert, who has revived 

 the name, has fixed the type locality as Rhineland. 



