GENERIC NAMES OF BUTTERFLIES 129 



CRENIS Boisduval, 1833, Nouv. Ann. Mus. Hist, nat., Paris 2 (2) : 196 (separately paged 

 offprint as Faun. ent. Madagascar, Lep. : 48). Type-species by monotypy : Crenis madagas- 

 cari, Boisduval, 1833, ibid. 2 (2) : 196. 



The name Crenis Boisduval is invalid, as it is a junior homonym of Crenis Hiibner, 1821 (see 

 above). It has been replaced by the name Sallya Hemming, 1964, Annot. Lep. (3) : 139. 



CREON de Niceville, 1896, /. lionibay nat. Hist. Soc. 10 (2) : 179. Type-species by original 

 designation : Polyommatus cleobis Godart, [1824], Ency. mith. 9 (Ins.) (2) : 634. 



CRESSIDA Swainson, 1832, Zool. Illustr. (2) 3 (21) : pi. 94. Type-species by selection by 

 Bryk (1929, in Strand's Lep. Cat. 35 : 8) : Cressida heliconides Swainson, 1832, ibid. (2) 

 3 (21) : pi. 94. 



Swainson wrote of this genus : " Types, Cressida heliconides and harmonides ", but, as he 

 cited two, and not one nominal species, this action of his is of no nomenclatorial significance. 



The taxon represented by the nominal species Cressida heliconides is currently identified 

 subjectively on taxonomic grounds with that represented by the nominal species Papilio 

 cressida Fabricius, 1775 [Syst. Ent. : 448). 



CRETEUS Westwood, [1852], in Double-day, Gen. diurn. Lep. (2) 1511. Type-species by 

 tautonymy under Article 68(d) : Papilio creteus Cramer, [1780], Uitl. Kapellen 3 (24) : 163, 

 pi. 284, figs C, 1). 



I his 11. nne was published by Westwood in the synonymy of Goniloba (then also a new name). 

 Westwood attributed the name Creteus to Hiibner, but this was a mistake, because Hiibner 

 never published a generic name consisting of this word. The first species placed 1>\ \\ estwood 

 in Goniloba and therefore also in its synonym Creteus was Papilio creteus Cramer, which there- 

 fore becomes the type-species of Creteus Westwood by tautonymy, as was pointed out by 

 myself in 1941 (J. Soc. Bibl. nut. Hist. 1 : 443). 



Since I dealt with this name in 1941, the position has changed completely through the 

 action of the Fifteenth Internationa] Congress of Zoology, London, 1958, in inserting in the 

 revised Code a provision in Article 11(d), under which a name published in a synonymy 

 acquires no status m zoological nomenclature thereby. The name Creteus Westwood, [1852], 

 is therefore invalid. 



CRETEUS de Niceville, 1895, J . Bombay nat. Hist. Soc. 9 (4) : 385. Type-species by original 

 designation : Hesperia cyrina rlewitson, 1876, Ann. Mag. nat. Hist. (18) 4 : 450. 



\^ explained in the immediately preceding entry there is an older name Creteus Westwood, 

 [1852], but under a provision (Article 11(d)) introduced into the present revised Code a name 

 published in a synonymy, as was the name Creteus Westwood, acquires no status of availability 

 thereby. Accordingly, the name Creteus de Niceville is not invalid under the Law of Homo- 

 nymy. Prior to the introduction into the Code of the foregoing provision, the name Creteus 

 de Niceville was rejected under the Law of Homonymy and was replaced by the name Cyrina 

 Hemming, 1939 ; in the altered circumstances described above that replacement name has 

 become a junior objective synonym of Creteus de Niceville. 



CREUSA de Niceville, 1896, /. Bombay nat. Hist. Soc. 10 (2) : 176. Type-species by original 

 designation : Creusa culta de Niceville, 1896, ibid. 10 (2) : 177. 



This name is invalid, as it is a junior homonym of Creusa Zittel, Schenk & Scudder, 1875 

 (in Zittel, Handbuch Palaeont. 1 (2) : 539). 



CR1COSOMA Felder (C.) & Felder (R.), [1865], Reise Fregalte " Novara ", Lep. Rhop. (2) : 

 292. Type-species by monotypy : Gricosoma leopardinum Felder (C.) & Felder (R.), 

 [1865], ibid. (2) : 293, pi. 37, figs 29, 30. 



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

 296. Type-species by monotypy : Crocozona pheretima Felder (C.) & Felder (R.), 

 [1865], ibid. (2) : 296, pi. 36, figs 16, 17. 



CROITANA Waterhouse, 1932, Austr. Zool. 7 : 199. Type-species by original designation : 

 Cyclopides croites Hewitson, [1874], 77/. exot. Butts 5 : [115], pi. [60], fig. 14. 



