372 FRANCIS HEMMING 



Hiibner. This application was approved by the Commission in its Opinion 137 promulgated 

 in 1942 (Opin. int. Comm. zool. Nom. 2 : 21-280. In this Opinion the Commission used 

 its Plenary Powers to direct that the name Pontia Fabricius was to be given precedence over 

 the name Mancipium Hiibner. This decision was amplified in 1954 by the Commission in its 

 Direction 4 (loc. cit. 2 : 629-652), in which it was formally placed on record that the ruling 

 given in Opinion 137 was to be interpreted as constituting the suppression of the name 

 Mancipium Hiibner, which was thereupon placed on the Official Index of Rejected and Invalid 

 Generic Names in Zoology. The name Pontia Fabricius had already (in Opinion 137) been 

 placed on the Official List of Generic Names in Zoology as Name No. 566. 



Finally, attention must be drawn to a strange misuse of the name Pontia by Boisduval 

 ([1836], (Sonnini's Suite a Buffon), Hist. nat. Ins., Spec. gen. Lepid. 1 : 430-434), who 

 employed it for Papilio nina Fabricius, 1793, and other species, thus treating this Fabrician 

 name as the equivalent of Leptosia Hiibner, 1818. This mistake of Boisduval's was copied 

 by various later authors, of whom the most prominent was Reuter (1897, Acta Soc. Sci. fenn. 

 22 (No. 1) : 18, 234, 236, 250, 550, 555), who, overlooking Boisduval's rather obscure attribu- 

 tion of this name to Fabricius, cited it as " Pontia Boisd." and even went so far as to erect the 

 nominal family-group taxon Pontiini based upon Boisduval's non-existent genus Pontia. 



PONTIEUCHLOIA Verity, 1929, Ann. Soc. ent. Fr. 98 : 347. Type-species by monotypy : 

 Papilio chloridice Hiibner, [1808-1813], Samml. europ. Schmett. : pi. Pap. 141, figs 712, 

 713 6\ 7H> 7 J 5 ?• 



PORISKINA Druce, 1895, Proc. zool. Soc. Lond. 1895 : 570 nota. Type-species by monotypy: 

 Poriskina phakes Druce, 1895, ibid. 1895 : 570, pi. 34, fig. 15 $. 



PORITIA Moore, [1866], Proc. zool. Soc. Lond. 1865 (3) : 775. Type-species by monotypy: 

 Poritia hewitsoni Moore, [1866], ibid. 1865 (3) : 775, pi. 31, fig. 10. 



PORPHYROGENES Hewitson, 1893, Proc. zool. Soc. Lond. 1893 : 18, 35. Type-species by 

 original designation : Telegonus omphale Butler, 1871, Ann. Mag. nat. Hist. (4) 8 : 284. 

 The taxon represented by the nominal species Telegonus omphale Butler is currently treated 

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

 established nominal species Eudamus passalus Herrich-Schaeffer, 1869 (CorrespBl. zool.-min. 

 Ver. Regensburg 23 : 172 [repaged offprint as Prodromus 3 : 64]). 



POTAMANAX Watson, 1893, Proc. zool. Soc. Lond. 1893 : 43, 55. Type-species by original 

 designation : Leucochitonea flavofasciata Hewitson, 1870, Descr. Twenty-Two new Spec. Equat. 

 Lep. : 76. 



The name Potamanax Watson is invalid, as it is a junior homonym of Potamanax Pilsbry 

 [1893] {Proc. Acad. nat. Sci. Philad. 1892 : 340). It has been replaced by the name 

 Potamanaxas Lindsey, 1925. 



POTAMANAXAS Lindsey, 1925, Ann. ent. Soc. Amer. 18 : 98. Type-species through 

 Section (i) (replacement names) of Article 67 : Leucochitonea flavofasciata Hewitson, 

 1870, Descr. Twenty -Two new Spec. Equat. Lep. : 76. 



The name Potamanaxas was introduced by Lindsay to replace the name Potamanax Watson, 

 1893, which is invalid under the Law of Homonymy. 



POT AMIS Hiibner, [1806], Tentamen : [1]. Type-species by monotypy : Papilio iris Linnaeus, 

 1758, Syst. Nat. (ed. 10) 1 : 476. 



The name Potamis Hiibner, as of the Tentamen, is invalid, owing to the rejection by the 

 Commission of that pamphlet for nomenclatorial purposes. 



If the name Potamis Hiibner had been an available name as from the Tentamen, it would 

 have replaced the name Apatura Fabricius, 1807, of which it would have been an objective 

 synonym. 



POTAMIS Hiibner, [1807], Samml. exot. Schmett. 1 : pi. [79]. Type-species by monotypy : 

 Potamis leonte Hiibner, [1807], ibid. 1 : pi. [79]. 



The situation which was found to exist in regard to this name, after the determination of 



