134 FRANCIS HEMMING 



publication in 1878 is known, whereas that of the Annates is not known, this paper ranking 

 therefore only from 31st December of that year, the earliest date by which it is known to have 

 appeared. 

 CYCLOSMA Draudt, [1923], in Seitz, Grossschmett. Erde 5 : 978. Type-species by monotypy : 

 Cyclosma abdonides Draudt, [1923], in Seitz, ibid. 5 : 978. 



CYCLYRIUS Butler, [1897], Proc. zool. Soc. Lond. 1896 (4) : 830. Type-species by original 

 designation : Polyommatus webbianus Brulle, [1840], in Webb & Berthelot, Canaries 

 (Ins.) : 93, pi. 4, figs 1, 1 A J. 



CYCNUS Hiibner, [1819], Verz. bekannt. Sckmett. (6) : 81. Type-species by selection by 

 Scudder (1875, Proc. amer. Acad. Arts Sci., Boston 10 : 151) : Papilio phaleros Linnaeus, 

 1767, Syst. Nat. (ed. 12) 1 (2) : 796. 



CYDIMON Dalman, 1825, K. svenska VetenskAkad. Handl. 1824 (2) : 407. 



This is a genus of moths, not of butterflies. The name Cydimon was introduced by Dalman 

 as a replacement name for Urania Fabricius, 1807. The species of the genus Urania were 

 often erroneously believed by the early authors to be butterflies. This view was taken by 

 Fabricius when he introduced the genus Urania. 



CYDRUS Godman, [1900], in Godman & Salvin, Biol, centr.-amer., Lep. Rhop. 2 : 512. Type- 

 species by monotypy : Cydrus naevolus Godman, [1900], in Godman & Salvin, ibid. Lep. 

 Rhop. 2 : 513, pi. 96, figs 19, 20, 20a, 21 <J 



The name Cydrus Godman is invalid, as it is a junior homonym of Cydrus Billberg, 1820 

 (Enum. Ins. Mus. Billb. : 81). It has been replaced by the name Naevolus Hemming, 1939. 

 The taxon represented by the nominal species Cydrus naevolus Godman is currently 

 considered subjectively on taxonomic grounds to be the same as that represented by the 

 older-established nominal species Proteides orius Mabille, 1883 (Bull. C. R. ent. Soc. Belg. 

 27 : lix). 



CYGARITIS Wallengren, 1857, K- svenska VetenskAkad. Handl., Stockholm (n.f.) 2 (1) (No. 4) : 

 42 (an Incorrect Subsequent Spelling of Cigaritis Donzel, 1847). 



CYLLO Boisduval, 1832, in d'Urville, Voy. " Astrolabe," Ent. 1 (Lep.) : 151. Type-species by 

 selection by Scudder (1875, Proc. amer. Acad. Arts Sci., Boston 10 : 151) : Papilio leda 

 Linnaeus, 1758, Syst. Nat. (ed. 10) 1 : 474. 



Westwood in 1851 (in Doubleday, Gen. diurn. Lep. (2) : 360), when discussing this genus, 

 said that Papilio leda Linnaeus and Papilio bankia Fabricius " may be considered as the types 

 of the genus." Since these nominal species are, and have long been, commonly considered 

 subjectively as representing the same taxon, many later authors, including myself in 1934 

 (Gen. Names hoi. Butts 1 : 32), accepted Westwood's remark as amounting to the selection of 

 Papilio leda as the type-species of Cyllo, but this view is incorrect, for it is necessary for an 

 author when selecting a type-species for a genus, to specify one nominal species only as such. 

 The first author to do this was Scudder in 1875 when he unequivocally stated that Papilio 

 leda was the type-species of this genus. 



The name Cyllo Boisduval is invalid, as it is a junior objective synonym of Melanitis 

 Fabricius, 1807. 



CYLLOGENES Butler, 1868, Ent. mon. Mag. 4 : 194. Type-species by original designation : 

 Melanitis suradeva Moore, 1857, in Horsfield & Moore, Cat. Spec. lep. Ins. Mus. East 

 India Coy (1) : 225. 



CYLLONIUM Westwood, 1854, Quart. J. geol. Soc. Lond. 10 : 395, 396. 



Westwood placed in this genus (which he did not characterize) two new nominal species 

 which he called C. boidusvalianum and C. hewitsonianum. He gave no description for either 

 of these fossils but provided figures of each, the first on plate 17 (fig. 17), the second on plate 

 18 (fig. 27). Scudder in 1875 (Proc. amer. Acad, arts Sci., Boston 10 : 151) expressed the view 

 that it was " exceedingly doubtful " whether C. boisduvalianum was a butterfly and that 

 C. hewitsonianum was certainly not one ; he added that these fossils were " so fragmentary 



