I893-J 



THE BRITISH NATURALIST. 



53 



" Moufet's Theatrum." Let us now compare the nomenclature of 

 Carolus de Villers. 1789, with that of Fabricius, 1793 : 



Villers. Fabricius. 



Palceno, L. = Hyale, L. 



Hyale, L. = Edusa, F. 

 So also Esper., in 1777, gives Pa I a no for Hyale, Hyale for Edusa, 

 Europome for Palmno. Hubner also figured Hyale of Fabricius under 

 the name of Palmno, Edusa of Fabricius under that of Hyale, and 

 Palaino of Fabricius under that of Europome. 



Here is Linnaeus' description of Palceno " Alis integerrimis rotunda- 

 tis flavis apice nigris margineque fulvis posticis subtus puncto argenteo. 

 Affmis nimeiun Hyales." Mr. W. F. Kirby, in a paper read at a meet- 

 ing of the Entomological Society, on Dec. 4th, 187 1 , states that he had 

 already questioned the correct identification of this insect and felt 

 sure that the insect intended by Linnaeus is the female of Papilio 

 croceus, Fourc He goes on to say " C. palceno is by far the commonest 

 species in Sweden, and there has never been any doubt about this 

 species, except that some of the older authors who were unacquainted 

 with it gave Hyale under this name. Both C. hyale and C. edusa are 

 of doubtful occurrence in Sweden." (M. Schojen includes C. edusa 

 in his list of the " Rhopalocera of Norway," but not C. hyale, see 

 " Entomologist Monthly Magazine," Vol. XXVI., p. 77.) " In one or 

 two cases {e.g. by Scopoli and Geoffrey), Hyale, Auct, is casually 

 noticed as a var. or as the other sex ; but the two species were since 

 properly separated. Linnaeus probably included both under the name 

 of Palceno. Denis and Schiffermiller in the " Wiener Verzeichniss," 

 (1775), gave Hyale, Auct, as Palceno, Linn, (certainly an error), and 

 Croceus as Hyale, another reason why the name Hyale should be 

 applied as it was by nearly all the old authors, to the latter species." 



If the law of priority is enforced in this instance C. hyale, Auct, is 

 nameless. The best way out of the difficulty will be to transfer the 

 name of Edusa to it. Tims the Common Clouded Yellow will be 

 Hyale, Linn, the Pale Clouded Yellow, Edusa. But a better way will 

 be to let the law of usage override the law of priority, thus— Hyale, 

 Fab., = Hyale, Linn. 



THE PTEROPHORIN A OF BRITAIN. 



BY J. W. TUTT, F.E.S. 



(Continued from p. 29). 



Of the genus Leioptilus, Dr. Jordan writes : — " The Swedish 

 species of this genus are L. scarodactylus, L. tephradactyhis, L. micro- 

 dactylus, E. osteodactylus and L. brachydactylus. Our own British 



