( xi ) 



cussing the systematic arrangement of the group therein 

 adopted. At the outset I may say it is a matter of regret 

 that Mr. Meyrick has not seen fit to give the name of the 

 typical species of each genus and the date of the generic 

 title. This would have made it easier for the nomenclator 

 to control the application of the terms, and might have 

 allowed me to extend the limit of this brief notice at the 

 present time. 



" Geometra, Meyrick, I. c, 96. To this generic term Mr. 

 Meyrick cites Linne as authority, consequently popilumaria 

 must be assumed by him as type, since it is the only Linnean 

 species included. But papilionaria became in 1806 (1811) 

 the type of Terpnc, Hiibner, consequently the employment 

 of Geometra for this type is no longer admissible. The same 

 species is also made the type of Holothalassis, Hiibner, 

 Verzeichniss, 285. I may say here, that in the Systema 

 Lep. Hildesise, Aug. 15, 1895, I state my inability to give the 

 type of the Linnean genus Geometra. Latreille, Gen. Crust. 

 Ins., 218, 1809, says: 'Linnaeus genus phalima in septem 

 sectiones distribuit : ' Attaciis, Bomhjx, Noctua, Geometra, 

 Tortriv, Pijralis, Tinea, Alucita. I have recently been able 

 to j&x the type of Bombijx as mori, through Schrank, 1802, 

 who restricts the term to mori and versicolor, and again 

 through Ochsenheimer, 1810, who restricts the term still 

 further by making versicolor the type of Endromis, leaving 

 mori as the trvie type of Bomhjx. I have also shown that the 

 type of Fi/ralis must be assumed as pim/uinalis, again 

 through Schrank, 1802. But for the terms : Noctua, Geometra, 

 Tortrix, and Tinea, I can jBnd, as yet, no type, and generic 

 terms without a type are useless in nomenclature, being 

 virtually nomina nuda until their types are ascertained. 



" Plemyria, Meyrick, I. c, 71. This is apparently the first 

 genus erected by Mr, Meyrick at the expense of Cidaria of 

 Lederer and Staudinger, as well as of Speyer, and conti- 

 nental writers. The generic title Cidaria is not only pre- 

 occupied, but it is later than a number of names proposed 

 for members of the Group by Hiibner in the Verzeichniss, 

 1818 (1816—1827). Mr. Meyrick includes in his genus 

 Plemyria, the species hastata, L., and has thus apparently 



