GENERIC NAMES OF BUTTERFLIES 313 



NEUROSIGMA Butler, 1868, Proc. zool. Soc. Lond. 1868 (3) : 615. Type-species by original 

 designation : Adolias siva Westwood, [1850], in Doubleday, Gen. diurn. Lep. (2) : 291 (a 

 nominal species established as a replacement for Acontia doubledaii Westwood, 1848, Cabinet 

 orient. Ent. : 76, pi. 37, fig. 4), the name of that nominal species being a secondary homonym 

 in the genus Adolias Boisduval of the name Adolias doubledaii Gray (G. R.), [1846] (Descr. 

 Figs. lep. Ins. Nepal : 13, pi. 13, 2 figs). 



The two species discussed above are not currently regarded as being congeneric with one 

 another : Acontia doubledaii Westwood (i.e. Adolias siva Westwood) is accepted as represent- 

 ing a taxonomically valid species and is the type-species of the genus Neurosigma Butler ; 

 Adolias doubledaii Gray, on the other hand, is currently placed in the genus Euthalia Hiibner, 

 where the taxon which it represents is identified with the taxon represented by the older- 

 established nominal taxon Adolias patala Kollar, [1844] [in Hiigel's Kashmir 4 (2) : 435). 

 Thus, the specific names doubledaii Westwood, 1848, and doubledaii Gray, [1846], are not 

 secondary homonyms according to current taxonomic ideas. Under the current revised Code 

 (Article 59(c)) a name rejected as a secondary homonym prior to i960 is not subject to revival 

 when on taxonomic grounds the taxa bearing the names in question are no longer regarded 

 as being congeneric with one another. Accordingly, the replacement name siva Westwood, 

 [1850], is the valid specific name for the type-species of the present genus. 



NEURYPEXINA Bethune-Baker, 1910, Trans, ent. Soc. Lond. 1910 : 64. Type-species by 

 original designation : Lycaenesthes lyzanius Hewitson, 1874, Ent. mon. Mag. 11 : 36. 



NICA Hiibner, [1826], Samml. exot. Schmett. 2 : pi. [17]. Type-species by monotypy : Nica 

 flavilla Hiibner, [1826], ibid. 2 : pi. [17]. 



Prior to the Copenhagen Congress of 1953 there was no clear statement in the Code as to 

 what constitutes homonymy as between generic names, but this difficulty was overcome by the 

 decision then taken that a difference in spelling of a single letter is to be taken as removing 

 any two generic names from the situation of homonymy. In the present case the name 

 Nica Hiibner was rejected by Kirby in 1871 as a junior homonym of Nika Risso, 1816 (Hist, 

 nat. Crust. : 84) and renamed Pseudonica. However, under the Copenhagen decision referred 

 to above, now embodied in the Code in Article 56(a) the words Nica and Nika are not homo- 

 nyms of one another. Accordingly, the name Nica Hiibner is an available name and Pseudo- 

 nica Kirby, 1871, is invalid as a junior objective synonym of that name. 



NICEVILLEA Evans, 1926,/. Bombay nat. Hist. Soc. 31 : 57, 623. Type-species by original 



designation : Pamphila gola Moore, 1877, Proc. zool. Soc. Lond. 1877 (3) : 594, pi. 58, fig. 9 $. 



The name Nicevillea Evans is invalid, as it is a junior homonym of Nicevillea Hampson, 



1895 {Trans, ent. Soc. Lond. 1895 : 307). It has been replaced by the name Oriens Evans, 



1939- 



NICONIADES Hiibner, [1821], Samml. exot. Schmett. 2 : pi. [147]. Type-species by mono- 

 typy : Niconiades xanthaphes Hiibner, [1821], ibid. 2 : pi. [147]. 



NILASERA Moore, [1881], Lep. Ceylon 1 (3) : 114. Type-species by original designation : 

 Papilio centaurus Fabricius, 1775, Syst. Ent. : 520. 



NIMULA Blanchard, 1840, Hist. nat. Ins. 3 : 465. Type-species by original designation : 

 Papilio lucinda Cramer, [1775], Uitl. Kapellen 1 (1) : 3, pi. 1, figs E, F. 



Blanchard attributed this name to Boisduval, and, as four years earlier (i.e. in 1836) 

 Boisduval had established a genus to which he had applied the name Nymula, it might have 

 been possible to argue that the present name was no more than an Incorrect Subsequent 

 Spelling of Nymula. This hypothesis seems however to be most unlikely in view of the widely 

 separated character of the species placed by Blanchard in Nimula and by Boisduval in Nymula 

 and in view also of the proprietary way in which Blanchard designated the type-species of 

 this genus. Accordingly, Nimula is here treated as the name of a genus established inde- 

 pendently by Blanchard on his own authority. 



NINA Horsfield, [1928], Descr. Cat. lep. Ins. Mus. East India Coy (2) : 140. Type-species by 

 monotypy : Papilio nina Fabricius, 1793, Ent. syst. 3 (1) : 194. 



