296 FRANCIS HEMMING 



Evans when in 1955 (Cat. amer. Hesp. Brit. Mus. 4 : 144) he chose the name Mnasalcas 

 Godman to take precedence below the name Mnasithens Godman, of which therefore it is a 

 junior subjective synonym. 



MNASEAS Godman, [1901], in Godman & Salvin, Biol, centr.-amer., Lep. Rhop. 2 : 597. 



Type-species by original designation : Thymelicus bicolor Mabille, 1889, Le Naturaliste (2) 



2 : 174, fig. 4. 

 MNASICLES Godman, [1901], in Godman & Salvin, Biol, centr.-amer., Lep. Rhop. 2 : 602. 



Type-species by original designation : Mnasicles geta Godman, [1901], in Godman & Salvin, 



ibid., Lep. Rhop. 2 : 602, pi. 103, figs 24-26 o*. 



MNASILUS Godman, [1900], in Godman & Salvin, Biol, centr.-amer., Lep. Rhop. 2 : 569. 

 Type-species by monotypy : Mnasilus penicillatus Godman, [1900], in Godman & Salvin, 

 ibid., Lep. Rhop. 2 : 570, pi. 100, figs 39-42 $. 



MNASINOUS Godman, [1900], in Godman & Salvin, ibid., Lep. Rhop. 2 : 561. Type-species 

 by monotypy : Mnasinous patage Godman, [1900], in Godman & Salvin, ibid., Lep. Rhop. 

 2 : 562, pi. 100, figs 17-19 6 s - 



MNASITHEUS Godman, [1900], in Godman & Salvin, Biol, centr.-amer., Lep. Rhop. 2 : 565. 

 Type-species by original designation : Mnasitheus cephis Godman, [1900], in Godman & 

 Salvin, ibid., Lep. Rhop. 2 : 566, pi. 100, figs 26, 27 5*- 



The taxon represented by the nominal species Mnasitheus cephis Godman is currently 

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

 nominal species Cobalus chrysophis Mabille, 1891 (Bull. C.R. ent. Soc. Belg. 35 : lxxxii). 



As has been explained in the note on the name Mnasalcas Godman, [1900], that name and 

 the name Mnasitheus Godman, [1900], are curently treated subjectively on taxonomic grounds 

 as synonyms of one another, and, as both were published on the same date and in the same 

 work, the relative precedence to be accorded to them depends on the choice of the First Re- 

 viser. This choice was made by Evans in 1955 (Cat. amer. Hesp. Brit. Mus. : 144) when he 

 chose the name Mnasitheus Godman to take precedence over the name Mnasalcas Godman. 



MNESTHEUS Godman, [1901], in Godman & Salvin, Biol, centr.-amer., Lep. Rhop. 2 : 606. 



Type-species by original designation : Phlebodes ittona Butler, 1870, Trans, ent. Soc. Lond. 



1870 : 508. 

 MNESTRA Kirby, 1871, Syn. Cat. diurn. Lep. : 217 (an Incorrect Subsequent Spelling of 



Mestra Hiibner, [1825]). 

 MODUZA Moore, [1881], Lep. Ceylon 1 (2) : 47. Type-species by original designation : 



Papilio procris Cramer, [1777], Uitl. Kapellen 2 (9) : 15, pi. 106, figs E, F. 



MOERA Hiibner, [1819], Verz. bekannt. Schmett. (4) : 51. Type-species by selection by Hem- 

 ming (1939, Proc. R. ent. Soc. Lond. (B) 8 : 133) : Papilio phidippus Linnaeus, 1863, Amoen. 

 acad. 6 : 402. 



Hiibner cited the type-species of this genus under the variant spelling phidippe (adopted by 

 him to bring the name into grammatical agreement with the generic name) and cited with it 

 only the reference " Phidippus Cram. 69. A.B ". Reference to the Uitl. Kapellen however 

 shows that that author did not publish the specific name phidippus as a new name of his own 

 but was merely employing it as already published by Linnaeus. The type-species of this 

 genus is therefore correctly citable as Papilio phidippus Linnaeus, 1763. 



This name has frequently been treated as being invalid under the Law of Homonymy on 

 the ground that it had previously been used by Leach for a genus of Crustacea, Scudder (1875, 

 Proc. amer. Acad. Arts Sci., Boston 10 : 220), being the first to express this view. Actually, 

 the name published by Leach was not spelled as Moera but as Maera Leach, [1814] (in 

 Brewster's Edinb. Ency. 7 (2) : 403). The relationship of generic names differing from one 

 another by some small spelling variant remained obscure until the adoption by the Copenhagen 

 Congress of 1953 of the provision now embodied in Article 57(d) that a difference in spelling of a 

 single letter is to be accepted as preventing a situation of homonymy arising as between any 



