62 



^Ülior die Xomeiiklatur der Acalyptratengattuiigen 



nach Th. H<»ckers Katalog der paläarktischen 



Dipteren, Hd. 4." 



By D. W. ("(Mjuillott, Washington, D. C. 



In tlio articlo iiiidci- tlie al)Ovc headiiifi'. wliich appears in the 

 Deceniber. U)10, numhcr of tliis Journal, Mr. Fv. Ilendcl attcnipts 

 to settle tlio (|U('stion of type-species of several genera, l)ut tliis 

 attenipt is not altoiietlior satisfactory, sinco lic fre(|nently iuiiorcs 

 the usage of the best naturalists, as embodied in the International 

 Code of Zoological Nomenclature. For tliis reason, man}- of Ins 

 condusions are erroneous and misleading. I shall now comnicnt on 

 such of these as concern genera occurring in America. 



M(uli.~a. When Fallen established this genus in 1810, he 

 stated that he knew three species. bnt did not mention their names. 

 When next he treated of this genus, he described five species undei- 

 it. Rondani, in 1856, was the lirst to designate a type, choosing 

 the second species, osdniua. As this is in conforinity with Article 

 30, letter //, of the Code as amended at the Boston nieeting and 

 published in „Science'' for October 18, 1907, this species must l)e 

 the type. Mr. Hendel is therefore in error in stating that when 

 Macquart in 1835 removed two of the species to his genus 

 SqiJi()»(ll(( this niade the third species, (/Jalm, the type: there is 

 nothing in the amended Code to justify such a proceeding. 



P((raJlclomm(( is not a synonym of Jfoshui and the statenicnt 

 to this etfect on page 584 of niy paper on the type-species should 

 be Struck out. 



riinsiphofa Fallen, 1810, is not preoccui)i('(l. The nearcst 

 approach to it is Phiissophoi-a Forskai 1775. which ditfcrs by two 

 letters. Artide 19 of the Code rcipiires that ,,The original ortho- 

 graphy of a name is to be preserved". hence any change in the 

 spelling of cither of these names would be in Opposition to the 

 Code. 



Hendel is in error in stating that T'lidia is not a synonym 

 of r/ii/sij)/i(>ra. When treating of this genus, M eigen expressly 

 States that Falh-n nanied it C/irifsoiH/i.ni (a change of nanie for 

 J^/ii/si/i/iorn undcr tlic mistakcii inipi-cssion that it was preoccupicd) 



