33Q FRANCIS HEMMING 



In 1935 however it was superseded by the name Potanthus Scudder, 1872 on its being dis- 

 covered that the previously unidentifiable nominal species (Hesperia omaha Edwards, 1863) 

 which was its type-species represented a taxon closely related to that represented by the 

 nominal species Hesperia dara Kollar, the two taxa concerned being from a subjective 

 taxonomic point of view undoubtedly congeneric with one another. Unfortunately, this dis- 

 covery came at a moment when for various reasons the Commission was not in a position to 

 intervene effectively and the change-over from Padraona to Potanthus was accordingly 

 effected. The name Potanthus is fully established — see Evans, 1949 (Cat. Hesp. Europ. 

 Asia Australia : 374-388) — and the time has long past when the interests of nomenclatorial 

 stability would be served by a return to the use of the name Padraona, which, being a junior 

 subjective synonym of Potanthus, is no longer required. 



PAD UCA Moore, 1886, /. linn. Soc. Lond., Zool. 21 : 34. Type-species by original designation : 

 Atella fasciata Felder (C.) & Felder (R.), i860, Wien. ent. Monats. 4 : 236. 



Prior to the promulgation of the new Code in 1961 there existed no authoritative provision 

 determining the conditions in which any two generic names were to be treated as being 

 homonyms of one another. In these circumstances the name Paduca here in question and 

 the name Paduka Distant were treated as being homonyms of one another. Both these 

 names were published in the year 1886, the name Paduka Distant having appeared in that 

 year on 30th April and Paduca Moore on 13th November. As the junior of these two names 

 Paduca Moore was rejected as being invalid under the Law of Homonymy ; it was replaced 

 in the year 1900 by Moore himself by the name Ducapa. Under the clarification of the rules 

 relating to homonymy between generic names embodied in Article 56(a) of the revised text 

 of the Code the " One-Letter-Difference" Rule provides that a generic name is not to be 

 treated as a homonym of another name, if the two names concerned differ from one another 

 in spelling by a single letter. Under this provision the name Paduca Moore is not to be 

 treated as a homonym of the slightly older name Paduka Distant and is therefore an available 

 name, its replacement name Ducapa falling therefore into synonymy. According to current 

 taxonomic ideas the name Paduca Moore will not however require to be brought into use, for 

 the type-species of Paduca is currently regarded subjectively as being congeneric with the 

 type-species of the genus Algia Herrich-Schaeffer, 1864. 



PADUKA Distant, 1886, Rhop. malayana : 369, 375. Type-species by original designation : 

 Paduka glandulosa Distant, 1886, ibid. : 376, pi. 35, fig. 5. 



The taxon represented by the nominal species Paduka glandulosa Distant is currently 

 treated subjectively on taxonomic grounds as being the same as that represented by the older- 

 established nominal species Hesperia lebadea Hewitson, [1868] (///. exot. Butts 4 [109], pi. [58], 

 figs 22, 23). 



PAENASMIA Kirby, 1896, in Allen's Nat. Libr., Lep. 2 : 303 (an Incorrect Subsequent 

 Spelling of Panosmia Wood-Mason & de Niceville, 1886). 



Kirby did not regard himself as introducing this as a new generic name ; he attributed it 

 to Moore, by whom however neither this name or any name resembling it was ever published, 

 and this attribution must certainly have been due to inadvertence. It cannot be doubted 

 that what Kirby was attempting to do was to cite the name Panosmia Wood-Mason & de 

 Niceville, 1886, of which Papilio dasarada Moore, 1857, which he stated was the type-species, 

 was one of the species originally included by Wood-Mason & de Niceville. 



PAGYRIS Boisduval, 1870, Consid. Lipid. Guatemala : 34. Type-species by monotypy : 

 Ithomia ulla Hewitson, [1857], ///. exot. Butts 2 : [32], pi. [16], fig. 124 q*- 



PAIWARRIA Kaye, 1904, Trans, ent. Soc. Lond. 1904 : 199. Type-species by original desig- 

 nation : Papilio venulius Cramer, [1779], Uitl. Kapellen 3 (21) : 85, pi. 243, fig. G. 



PALAEOCHRYSOPHANUS Verity, 1943, Le Farfalle diurn. d' Italia 2 : 23, 64. Type- 

 species by original designation : Papilio hippothoe Linnaeus, 1761, Faun. svec. (ed. 2) : 274. 

 This name was first published by Verity in 1934 (Ent. Rec. 46 (5), Suppl. : (13) nota) but, 



