134 THE entomologist's record. 



Neohjcaena was created by de Niceville Butt. Ind., iii., p. 64, in 

 1890, for sinensin, this species being named as the type. It is so 

 closely allied to Stri/uion that it is difficult to differentiate it struc- 

 turally. The wings, however, are quite a different shape, the male 

 armature is different, though somewhat closely akin, whilst in the 

 general pattern of the underside of the imago is found the easiest 

 method of discriminating it. The three species belonging to the genus 

 are sinensis, tnu/styoeiiii, and rhyumus and they are easily separated 

 by their pattern from the main body of the genus Strymon. 



Tutt [lor. rit.) raised a number of genera for various species of Strymon; 

 Fixsenia, type Jierzi, Fixs.; Leechia, type thalia, Leech, (altered by Tutt 

 later on to Strynionidia) : Fclderia, type exiiuia ; Edwanlsia, type 

 w-albnm, Enoch (afterwards altered by him to Chattendenia); Klnyia, 

 type fpini, Schiff. ; Knllaria, type sassnnides: Erschoffia, type lunulata, 

 Ersch.; Bakeria, type Icdereri, Bdv. ; and JSordiiiannia, type iiiyrtale, 

 Klug. In the latter two cases there are no androconical patches, but 

 in all the others androconia are present. I hold, however, that if a 

 genus is to be raised it should be raised on characters applicable to 

 both sexes. I have searched and searched in vain to try and find 

 characters, structural characters, by which I could retain some of these 

 genera, but I have completely failed, and I do not see any valid reason 

 for encumbering our minds with all these names, several of which are 

 for a single species, whilst in most of them no diagnoses were given. 

 On the other hand, they all fall quite satisfactorily into the genus Strywo7i, 

 Hb. This genus is then thoroughly homogeneous, and even including 

 all the North American species, it is by no means unduly large. The 

 male armatures all follow closely one type, the general facies of the 

 various species follow closely similar lines, merely diverging from spots 

 to stripes, whilst their structure is practically identical. Under these 

 circumstances I propose to use the name Strymon to designate the 

 genus of all the species classed by Staudinger, Leech, and others under 

 Theda. I should also mention that Strand gives new names, viz., 

 Pseudotliecla, Sitperflieddo, Thecliola, and luttiola for Ersclwffia, Kollaria, 

 Felderia, and Klngia, all of which are pre-occupied. [Entuvwl. 

 Rundsch., 1910, p. 161.) These names will likewise have to fall to 

 Strymon. 



Zephyrns, Dalman, was raised in 1816 and the type fixed by its 

 author as hetidae, L., and Theda, Fabrieius, had its type fixed by 

 Swainson, as already stated in 1821, as hetulae. 



Ruralis, L., had its type fixed by Barbut in 1781 as betidae : this, 

 therefore, is the type. 



Aurotis, Dalman, is given by its author as a sub-genus of Zephyrus, 

 whilst Scudder, in 1875, fixed the type as quercns. Qiiercns is con- 

 generic with betidae, so that the name falls before Theda, Zephyrus, 

 and Ruralis, 



Bithys, Hb. (1816), had the type fixed by Scudder {loc. cit.) as 

 stryphon. I do not agree with his reasoning, but he fixed the type and 

 this must be accepted. Tutt's suggestion that quercm be the type is 

 ultra vires on account of Scudder's double action, irrespective of which, 

 as I have said before, Stephens' use cannot be accepted as a restriction. 



The genus therefore stands thus : — 



Ruralis, L., type hetulae, L. (1781). 



Theda, Fab. (1807), Zephyrus, Dalman (1816), Aurotis, Dalman 



