326 FRANCIS HEMMING 



of the subsequent history of this case are given below in the note on the name Princeps 

 Hiibner. It is therefore only necessary here to note that the Commission approved of the 

 foregoing request in its Opinion 179. Later, in Opinion 270 the Commission placed the name 

 Orpheides Hiibner, as a junior objective synonym of Princeps Hiibner, [1807], on the Official 

 Index of Rejected and Invalid Generic Names in Zoology as Name No. 68. 



ORSES Godman, in Godman & Salvin, Biol, centr.-amer., Lep. Rhop. 2 : 621. Type-species 

 by original designation : Hesperia cynisca Swainson, [1821], Zool. Illustr. (1) 1 (7) : pi. 40. 



ORSIXENICA Sharp, 1916, in Zool. Rec. 51 (year 1914) (Ins.) : 212 (an Incorrect Subsequent 

 Spelling of Oreixenica Waterhouse & Lyell, 1914). 



ORSOTRIAENA Wallengren, 1858, Ofvers. VetenskAkad. Fork., Stockh. 15 : 79. Type- 

 species by monotypy : Papilio hesione Cramer, [1775], Uitl. Kapellen 1 (1) : 16, pi. 11, 

 figs C, D. 



The taxon represented by the nominal species Papilio hesione Cramer is commonly treated 

 subjectively on taxonomic grounds as being a subspecies of the taxon represented by the 

 nominal species Papilio medus Fabricius, 1775 (Syst. Ent. : 488). In view of the fact that the 

 two names cited above were both published in 1775, it may usefully be noted that by the 

 Ruling given in its Opinion 516 (Opin. int. Comm. zool. Nom. 19 : 1-44) the Commission 

 gave directions, inter alia, that names published by Fabricius in 1775 were to be accorded 

 precedence above names published by Cramer in that year. 



ORSOTRIOENA Bingham, 1905, Faun. Brit. Ind., Butts (ed. 1) 1 : 69 (an Incorrect Subse- 

 quent Spelling of Orsotriaena Wallengren, 1858). 



ORSTRIAENA Young, 1903, /. Bombay nat. Hist. Soc. 15 : 301 (an Incorrect Subsequent 

 Spelling of Orsotriaena Wallengren, 1858). 



ORTHOLEXIS Karsch, 1895, Ent. Nachr. 21 : 319. Type-species by monotypy : Ortholexis 

 melichroptera Karsch, 1895, ibid. 21 : 320. 



Evans (1937, Cat. Afric. Hesp. Brit. Mus. : 17) observed that, although the type of Ortho- 

 lexis melichroptera was described by Karsch as a <$, it was believed to be a $ of Erionota holo- 

 causta Mabille, 1891 (Bull. C.R. Soc. ent. Belg. 35 : cxi). 



ORTHOMIELLA de Niceville, 1890, Butts India Burmah Ceylon 3 : 15, 125. Type-species 

 by original designation : Chilades (?) pontis Elwes, 1887, Proc. zool. Soc. Lond. 1887 (3) : 

 446. 



ORTHOPAETUS Evans, 1927, Ident. Ind. Butts (ed. 1) : 197, 211, 296 (an Incorrect Subse- 

 quent Spelling of Orthophoetus Watson, 1895). 



ORTHOPHAETUS Watson, 1895, /. Bombay nat. Hist. Soc. 9 (4) : 422 (an Incorrect Original 

 Spelling of Orthophoetus Watson, 1895). 



The generic name here in question was published in two Original Spellings, namely Ortho- 

 phoetus and Orthophaetus. Of these the spelling Orthophoetus is, as explained in the note on 

 Orthophoetus, the Correct Original Spelling under Article 32(b) and Orthophaetus is the In- 

 correct Original Spelling. 



ORTHOPHOETUS Watson, 1895, /. Bombay nat. Hist. Soc. 9 (4) : 419 et nota. Type-species 

 through Section (i) (replacement names) of Article 67 : Eudamus phanaeus Hewitson, 

 1867, Descr. One Hundred new Spec. Hesp. (1) : 14. 



This generic name was introduced as a replacement for Pteroxys Watson, 1893, which is 

 invalid under the Law of Homonymy. 



As noted above, the present generic name was published in two Original Spellings : first, 

 in the main description (: 419) the concluding portion of the name appeared in the spelling 

 " -cetus " ; second, in the ensuing discussion ( : 422) that portion of the name appeared in the 

 spelling " -aetus ". This variation in spelling, no doubt due to the unfortunate use of 

 digraphs (diphthongs) would not have occurred if the letters of which the name is composed 



