458 FRANCIS HEMMING 



WATSON I A Elwes & Edwards, 1897, Trans, zool. Soc. Lond. 14 (4) : 220. Type-species by 

 monotypy : Watsonia swinhoei Elwes & Edwards, 1897, ibid. 14 (4) : 220, pi. 20, fig. 6 q*. 



The name Watsonia Elwes & Edwards is invalid, as it is a junior homonym of Watsonia 

 Folin, [1880] {Proc. zool. Soc. Lond. 1879 (4) : 807) (Mollusca). It has been replaced by the 

 name Watsoniella Berg, 1898. 



WATSONIA Tutt, [1906], Nat. Hist. Brit. Butts 1 (6) : 191. Type-species by original desig- 

 nation : Papilio metis Linnaeus, 1764, Mas. Lud. Ulr. : 325. 



The name Watsonia Tutt is invalid under the Law of Homonymy, being a junior homonym 

 of Watsonia Elwes & Edwards, 1897, discussed above, and, like that name, of Watsonia 

 Folin, [1880]. It has been replaced by the name Metisella Hemming, 1934. 



WATSONIELLA Berg, [17th Dec. 1898], Com. Mus. nac. Buenos Aires 1 : 42. Type-species 

 through Section (i) (replacement names) of Article 67 : Watsonia swinhoei Elwes & Edwards, 

 1897, Trans, zool. Soc. Lond. 14 (4) : 220, pi. 20, fig. 6 q*. 



The name Watsoniella was introduced as a replacement for Watsonia Elwes & Edwards, 

 1897, which is invalid under the Law of Homonymy. This name, which (as shown above) 

 was published on 17th December 1898, is invalid as a junior objective synonym of Stimula 

 de Niceville (another replacement of Watsonia Elwes & Edwards), which was published on 

 10th December 1898, and thus has seven days' priority over Watsoniella Berg. 



XANTHIDIA Boisduval & Leconte, [1829], Hist. gen. icon. Lipid. Chenilles Amir, sept. 

 (1/7) : 48. Type-species by selection by Scudder (1875, Proc. amer. Acad. Arts Sci., Boston 

 10 : 288) : Papilio nicippe Cramer, Uitl. Kapellen 3 (18) : 31, pi. 210, figs C, D. 



The name Xanthidia Boisduval & Leconte is invalid, as it is a junior objective synonym 

 of Abaeis Hiibner, [1819]. 



XANTHOCLEIS Boisduval, 1870, Consid. Lipid. Guatemala : 30. Type-species by selection 

 by Scudder (1875, Proc. amer. Acad. Arts Sci., Boston 10 : 288) : Thyridia aedesia [July, 

 1847], Gen. diurn. Lep. (1) : pi. 16, fig. 4 [text (loc. cit. (1) : 118) published in October 1847] 



XANTHODISCA Aurivillius, [1925], in Seitz, Grossschmett. Erde 13 : 528. Type-species by 

 monotypy : Astictopterus vibius Hewitson, 878, Ann. Mag. nat. Hist. (5) 1 : 343. 



XANTHOTAENIA Westwood, 1858, Trans, ent. Soc. Lond. (2) 4 : 187. Type-species by 

 monotypy : Clerome (Xanthotaenia) busiris Westwood, 1858, ibid. (2) 4 : 187. 



As shown by the reference given above, Westwood regarded Xanthotaenia as a subgenus of 

 Clerome. 



XENANDRA Felder (C.) & Felder (R.), [1865], Reise Fregatte " Novara ", Lep. Rhop. (2) : 304. 

 Type-species by monotypy : Xenandra heliodes Felder (C.) & Felder (R.)» [1865], ibid., 

 Lep. Rhop. (2) : 304, pi. 38, figs 19-22. 



XENIADES Godman, [1900], in Godman & Salvin, Biol, centr .-amer . , Lep. Rhop. 2 : 517. 

 Type-species by original designation : Papilio orchamus Cramer, [1777], Uitl. Kapellen 

 2 (13) : 92, pi. 155, figs E, F. 



XENICA Westwood, [1851], in Doubleday, Gen. diurn. Lep. (2) : 387 nota. Type-species by 

 selection by Butler (1868, Cat. diurn. Lep. Satyridae Brit. Mus. : 70) : Papilio abeona 

 Donovan, 1805, Epitome nat. Hist. Ins. New Holland : pi. 22, fig. 1. 



When dealing with the genus Lasiommata, Westwood cited twenty-five nominal species, 

 against the names of the last four of which he placed a note of interrogation, thereby indicating 

 that he placed those species only doubtfully in the above genus ; further, against the name 

 of the first of these he placed an arrow mark, directing attention to a footnote in which he 

 stated that this and the following species differ from the type of this genus [i.e. the genus 

 Lasiommata'] ... " They may, perhaps, however, be regarded as a separate subgenus, under 

 the name of Xenica." Papilio abeona, selected as the type-species of Xenica, was the third 

 of the four species doubtfully referred to Lasiommata in the manner described above. 



