280 FRANCIS HEMMING 



species Nereis dianasa Hiibner, [1806] was selected to be the type-species of this nominal 

 genus. That species is the type-species of Eueides Hiibner, 1816, in the synonymy of which the 

 name Mechanitis [Illiger] disappeared on being suppressed by the Commission. 



MECHANITIS Fabricius, 1807, Mag. f. Insektenk. (Illiger) 6 : 284. Type-species by selection 

 by Scudder (1875, Proc. amer. Acad. ArtsSci., Boston 10 : 212) : Papilio polymnia Linnaeus, 



1758, Syst. Nat. (ed. 10) 1 : 466. 



This name was universally accepted as an available name until in 1939 it was discovered — 

 as explained in the preceding note — that it was a junior homonym of the previously overlooked 

 name of slightly older date, Mechanitis [Illiger], 1807. By the suppression by the Commission 

 in its Opinion 232 of the name Mechanitis [Illiger] the name Mechanitis Fabricius was provided 

 with an unassailably available status. By the same Opinion the Commission placed the name 

 Mechanitis Fabricius on the Official List of Generic Names in Zoology as Name No. 661. 



MEDUSIA Verity, 1953, Le Farfalle diurn. d' Italia 5 : 179. Type-species by original desig- 

 nation : Papilio medusa [Denis & Schiffermiiller], 1775, Ankilndung [sic] eines syst. Werkes 

 Schmett. Wiener Gegend : 167. 



MEGALEAS Godman, [1901], in Godman & Salvin, Biol, centr .-amer . , Lep. Rhop. 2 : 617. 

 Type-species by monotypy : Hesperia syrna Godman & Salvin, 1879, Proc. zool. Soc. Lond. 

 1879 : 155. 



MEGALO PALPUS Rober, 1886, CorrespBl. ent. Ver. Iris 1 : 51. Type-species by original 

 designation : Megalopalpus simplex Rober, 1886, ibid. 1 : 51, pi. 4, fig. 4 2. 



The name Megalopalpus Rober was involved in the Pentila\Liptena problem up the time of 

 the settlement of this by the Ruling given by the Commission in its Opinion 566 in 1959 (Opin. 

 int. Comm. zool. Nom. 20 : 377-390). This arose from the fact that the taxon represented 

 by the nominal species Megalopalpus simplex Rober, the type-species of the present genus, 

 is currently considered subjectively to be congeneric with Pentila symna Westwood, [1851], 

 the type-species by monotypy of the genus Pentila Westwood, of which therefore — on 

 the foregoing basis — Megalopalpus Rober was a junior subjective synonym. The names 

 Pentila and Megalopalpus were never used in this sense and the action taken by the Commission 

 in its Opinion 566 gave effect to the long-established usage of these names. Thus, as the 

 result of that Opinion the name Megalopalpus Rober became the oldest available name for the 

 genus concerned. As part of the settlement effected by the above Opinion the name Megalo- 

 palpus Rober was placed on the Official List of Generic Names in Zoology as Name No. 1368. 



MEGALURA Blanchard, 1840, Hist. nat. Ins. 3 : 446. Type-species by original designation : 

 Nymphalis coresia Godart, [1824], Ency. meth. 9 (Ins.) (2) : 359. 



MEGAMEDE Hiibner, [1819], Verz. bekannt. Schmett. (4) : 50. Type-species by selection by 

 Scudder (1875, Proc. amer. Acad. Arts Sci., Boston 10 : 213) : Papilio rhetenor Cramer, 

 [ I 775]. Uitl. Kapellen 1 (2) : 22, pi. 15, figs A, B. 



When Hiibner established the nominal genus Megamede, he recognized two nominal species 

 as belonging to it, the first of these being a replacement species Megamede rhetenoris then 

 established ( : 50) to take the place of Papilio rhetenor Cramer, a nominal species, whose name 

 he rejected for no ascertainable reason. Under the Code (Article 69 (a) (i)) a nominal species, 

 the name of which is cited in a synonymy at the time of the establishment of a nominal genus 

 ranks as one of the originally included nominal species of that genus. Thus, in the present case 

 Scudder's action in selecting Papilio rhetenor as the type-species constitutes a valid type- 

 selection. 



MEGANOSTOMA Kirby, 1871, Syn. Cat. diurn. Lep. : 489 (an Incorrect Subsequent Spelling 

 of Megonostoma Reakirt, 1863). 



MEGASTES Westwood, [1851], in Doubleday, Gen. diurn. Lep. (2) : 346. Type-species by 

 selection by Scudder (1875, Proc. amer. Acad. Arts Sci., Boston 10 : 213) : Dynastor napoleon 

 Doubleday, [1849], Gen. diurn. Lep. (2) : pi. 58, fig. 2. 



