GENERIC NAMES OF BUTTERFLIES 193 



FAUNIS Hubner, [1819], Verz. bekannt. Schmett. (4) : 55. Type-species by selection by Hem- 

 ming (1933, Entomologist 66 : 198) : Papilio eumeus Drury, [1773], ///. nat. Hist. 1 : index 



et 4, pi. 2, fig. 3. 

 FAUNULA Fekler (C.) & Felder (R.), [1867], Reise Fregatte " Novara ", Lep. Rhop. (3) : 488. 



Type-species by monotypy : Faunula leucoglene Felder (C.) & Felder (R), [1867], ibid., 



Lep. Rhop. (3) : 488. 

 FAVONIUS Sibatani & Ito, 1942, Tentkredo 3 (4) : 327. Type-species by original designation : 



Dipsas orientalis Murray, 1875, Ent. mon. Mag. 11 : 169. 

 FAVRIA Tutt, [1906], Nat. Hist. Brit. Butts 1 : 218. Type-species by original designation : 



Hesperia cribellum Eversmann, 1841, Bull. Soc. Nat. Moscou 1841 (1) : 25. 

 FELDERIA Semper (G.), 1888, in Semper (C. G.), Reis. Archipel. Philipp. (2) (No. 5) (Schmett.) 



1 (3) : 88. Type-species by selection by de Niceville (1893, J . Bombay nat. Hist. Soc. 8(1): 



46) : Felderia phlegethon Semper (G.), 1888, in Semper (C. G.), ibid. (2) (No. 5) (Schmett.) 



1 (3) : 90, pi. 17, figs 6, 7 <$, 8, 9 ?. 



The name Felderia Semper is invalid, as it is a junior homonym of Felderia Walsingham, 



1887 (Trans, ent. Soc. Lond. 1887 : 165). It has been replaced by the name Cynitia Snellen, 



1895- 

 FELDERIA Tutt, [1907], Nat. Hist. Brit. Butts 2 : 142. Type-species by original designation : 



Thecla w-album Knoch var. eximia Fixsen, 1887, in Romanoff, Mim. Lipid. 3 : 271, pi. 13, 



fig. 2. 



Like Felderia Semper, 1888, discussed immediately above, the name Felderia Tutt is invalid, 



as being a junior homonym of Felderia Walsingham, 1S87. It has been replaced by the name 



Thecliolia Strand, 1910. 

 FELICENA Waterhouse, 1932, Auslr. Zool. 7 : 99. Type-species by original designation : 



Thymele dirpha Boisduval, 1832, in d'Urville, Voy. " Astrolabe " , Faune ent. 1 (Lep.) : 162. 



FENISECA Grote, 1869, Trans, amer. ent. Soc. 2 : 308. Type-species by original designation : 

 Hesperia tarquinius Fabricius, 1793, Ent. Syst. 3 (1) : 319. 



FEST1VUS Crotch, 1872, Cist. ent. 1 : 62. Type-species by original designation : Papilio 

 plexippus Linnaeus, 1758, Syst. Nat. (ed. 10) 1 : 471. 



The term " Festivus " is one of a number of words used by Linnaeus (1758, loc. cit. : 470) to 

 denote groups of species within the genus Papilio. Many years later these terms were the 

 cause of considerable confusion owing to claims being advanced on their behalf that they 

 should be treated as having acquired the status of subgeneric names as from the date on which 

 they were originally published in the XVHIth century. This unsatisfactory situation persis- 

 ted until the foregoing claim was categorically rejected by the Commission in its Opinion 124 

 (1936, Smithson. miscell. Coll. 73 (No. 8) : 1-2 ; republished in facsimile in 1958 (Opin. 

 int. Comm. zool. Nom. 1 (B) : 465-466). In the meantime some of these terms had been 

 published in genuine binominal form by authors who attributed them wrongly to Linnaeus 

 but who must themselves be treated as the authors, since it was through their action alone 

 that these terms acquired status in nomenclature. In the present case the first author of 

 this kind was Crotch and the name Festivus must therefore be attributed to him. The type- 

 species of Festivus Crotch is Papilio plexippus Linnaeus, by designation by Crotch. 



The name Festivus Crotch is invalid, as it is a junior objective synonym of Danaus Kluk, 

 1802. 



FIXSENIA Tutt, [1907], Nat. Hist. Brit. Butts 2 : 142. Type-species by original designation : 

 Thecla herzi Fixsen, 1887, in Romanoff, Mini. Lipid. 3 : 279, pi. 13, fig. 4 $. 



FLACCILLA Godman, [1901], in Godman & Salvin, Biol, centr.-amer., Lep. Rhop. 2 : 593. 

 Type-species by original designation : Papilio aecas Stoll, [1781], in Cramer, Uitl. Kapellen 

 4 (29) : 102, pi. 343, figs A, B. 



The name Flaccilla Godman was formerly considered to be invalid as a junior homonym of 

 Flacilla Koken, 1896 (JahrB. geol. ReichsAnst. 46 : 92), and, as such, was replaced in 1939 by 



