166 [J«iy. 



but wrongly, as this was already the type of three different genera! 

 See Leptidia. Sinapis was taken as type of Leptidia in 1S20, Bre- 

 phos has belonged to Leueidia since 1847, Alcesta and Xipbia are 

 congeneric, and Xiphia may be taken as the type. See Nina and 

 Nychitona." 



Scudder (I. c, 205), " Leucophasia.* 1827. Steph., 111. Brit. Ent. 

 Haust. i. 24 : sinapis. Sole species, and therefore type, as specified 

 by Westwood (Gen. Syn. 87). Used in the same sense by many sub- 

 sequent authors. Falls before Leptidia. See also Leptoria." 



Scudder (/. c, 201) : "Leptoria.* 1841. Westw., Brit. Butt. 31 : 

 sinapis (candida). Sole species, and therefore type. Falls before 

 Leptidia. See also Leucophasia and Leptosia, for the latter of which 

 it was probably a misprint." 



Scudder overlooked entirely Stph., 111. Br. Ent., Haust. IV, 404 

 (1835): "244 Leptoiua (Leucophasia). 1001 Sinapis, 24, 5811" 

 and therefore failed to understand that thero was no such genus as 

 " Leptoria, AVstwd.," that Westwood was quoting from Stephens, 

 who had written f Leptoiua [Hb.], Steph., in error for JLeptosia, lib., 

 and that in 1835 Stephens intended to convey the idea that Leptosia, 

 lib. (1818) [-\Leptoria (Hb.), Stph.] = Leucophasia, Stph. (1827), 

 type, sinapis. Scudder proposes Xiphia for the type of Leptosia in 

 1S75, neglecting to observe that Stephens had made sinapis the type 

 in 1835. If Leptidia be inadmissible this action must be studied by 

 those interested in the Rhopalocera. 



[N.B. — Scudder quotes Billberg's genus as Leptidia, while our 

 transcript gives the name as Leptidea. It is obvious that either 

 Scudder or Durrant has wrongly copied this name, but this discre- 

 pancy does not affect the argument.] 



As few of our readers can have had the opportunity of studying 

 Billberg's Enumeratio, Leptidea may be taken as a typical example, 

 and everything possibly relating to it is reproduced for those inter- 

 ested in the subject, with the object that they may decide for themselves 

 the question of the validity or invalidity of Billberg's names. 



" 2. Subclassis Astegopteba. 



Alis non tcctis. 

 I. Ordo Lepidoptera : 

 Aliis plerumque squauioso-imbricatis ; lingua spirali filiformi, rare nulla. 



I. Tribus Ephemerina : 

 Alis quiescentiuni erectis : antennis cxtrorsim crassioribus, 1. capitatis. 

 I. Nat. Papilionides. 

 Tibiia posterioribus apice tantum calcaratus : tarsis diatincte unguiculatus. 



