GENERIC NAMES OF BUTTERFLIES 197 



represent the lectotype of Papilio pumilio. The syntype represented by Cyrilli's figure was 

 selected for this purpose in preference to one of those represented by the figures published by 

 Esper or Hiibner, partly because Cyrilli was the first author to publish a figure of this species 

 and partly because the exact locality in which the specimen figured was taken was known. 



Great confusion would result if it were necessary to accept the true Papilio pygmaeus 

 Fabricius as the type-species of Gegenes Hiibner, for this would involve the transfer of the name 

 Gegenes from its long-accustomed position in the group currently known as the " Gegenes 

 Group " in the family Hesperiidae to the only distantly related group in the same family 

 currently known as the " Astictopterns Group ", where it would replace the well-established 

 name Aeromachus de Niceville. In order to avoid these most undesirable transfers, the 

 Commission has been asked to use its Plenary Powers under Section (1) (misidentified type- 

 species) of Article 70 to designate Papilio pumilio Hoffmansegg to be the type-species of the 

 genus Gegenes Hiibner, thereby both giving effect to Hiibner's intention when establishing 

 this genus and providing a valid basis for the long-established use of that name. In accord- 

 ance with the provisions of Article 80, the present case is here treated provisionally as though 

 the application submitted had already been approved by the Commission. 



GEHENNA Watson, 1893, Proc. zool. Soc. Land. 1893 : 92, 108. Type-species by original 

 designation : Hesperia abima Hewitson, 1877, Ann. Mag. nat. Hist. (4) 19 : 83. 



The taxon represented by the nominal species which is the type-species of the present genus 

 is currently treated subjectively on taxonomic grounds as being congeneric with Isoteinon 

 satwa de Niceville, the type-species of the genus Zographetus Watson. The generic names 

 Gehenna and Zographetus, being names published on the same date (and in the same work) 

 depend for their relative precedence upon the choice made by the First Reviser. In this case 

 the First Reviser was Evans (1949, Cat. Hesp. Europ. Asia Australia Brit. Mus. : 299) who 

 gave preference to Zoographetus over Gehenna, sinking the latter as a junior subjective 

 synonym. 



GEHLOTA Doherty, 1889, J. asiat. Soc. Bengal, Pt II, 58 (1) : 131. Type-species by selection 

 by Watson (1893, Proc. zool. Soc. Lond. 1893 : 49) : Plesioneura sumitra Moore, [1766], 

 Proc. zool. Soc. Lond. 1865 (3) : 787. 



GEIROCHEILUS Edwards, 1874, Trans, amer. ent. Soc. 5 : 18 (an Incorrect Subsequent Spell- 

 ing of Gyrocheilus Butler, 1867). 



GEITONEURA Butler, 1867, Ann. Mag. nat. Hist. (3) 19 : 164. Type-species by selection 

 by Butler (Feb. 1868, Ent. mon. Mag. 4 : 196) : Satyrus klugii Gu6rin-Meneville, [1831], 

 in Duperry, Voy. autour Monde, " Coquille ", Zool. 2 (Pt 2) (Div. 1), pi. 17, fig. 2 ; id., [1838], 

 ibid. Zool 2 (Pt. 2) (Div. 1) : 280. 



Butler, who established this genus in 1867 without a designated type-species, selected the 

 above species as type-species twice in 1868, first, in February cited above, and, second, in 

 July (Cat. diurn. Lep. Satyridae Brit. Mus. : 166). 



GELOTOPHYE Ferreira d'Almeida, 1940, Rev. Ent., Rio de Janeiro 11 (3) : 760. Type-species 

 by original designation : Thyridia mystica Zikan, 1931, Ent. Rundsch. 48 : 102. 



GERIDUS Westwood, [1851], in Doubleday, Gen. diurn. Lep. (2) : pi. 76, fig. 5 (an Incorrect 

 Subsequent Spelling of Gerydus Boisduval, [1836]). 



GEROSIS Mabille, 1903, in Wytsman's Gen. Ins. 17 (A) : 44, 49. Type-species by monotypy : 

 Coladenia hamiltoni de Niceville, 1888, /. asiat. Soc. Bengal, Pt II, 57 : 291, pi. 13, fig. 8. 



The taxon represented by the nominal species Coladenia hamiltoni de Niceville is currently 

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

 older-established nominal species Satarupa phisara Moore, 1874, /. asiat. Soc. Bengal, Pt II, 

 53 (1) : 50. 



GERYDUS Boisduval, [1836], (Roret's Suite a Buffon) Hist. nat. Ins., Spec. gen. Lepid. 1 : 

 pi. 23 [= pi. 7C], fig. 2. Type-species by monotypy : Papilio symethus Cramer, [1777], 

 Uitl. Kapellen 2 (13) : 84, pi. 149, figs B, C. 



