Nutt alio mis bore alls 



Lj>rLarchu3 villicus Lichtenstein Types 



Ivluscicapa .^.esoleuca " 



No. 2^02. Collection - Berlin. V.'ing 102,0, tail 

 71.5, culmen 16.5, "mas", 'tarsus 15.2, middle 

 toe minus claw 11.5, Deppe. Locality - Oaxaca. 



No. 2A03. Collection - Berlin. Wing 108.0, tail 

 72.0, culmen 18.7, tarsus 15.3, middle toe minus 

 claw 11.6. Deppe. Locality - Oaxaca. 



Hellmayr has designated 2/t.02 as the type of 

 Lichtenstein' s ^-uscicapa mesoleucus, a proceeding 

 which ;\ould have been entirely vvdthin his rights as 

 a revisor if either of these two birds v/ere 

 identifiable as the basis of the exceedingly sketchy 

 description. Lichtenstein' s description of LIuscicapa 

 mesoleucus appeared in the v;ell knoy«i list of Mexican 

 bird names (Preiz-Verzeichnis mexicanischer VOgel, 

 1830, page 2. It reads " ILuscicapa mesoleuca Licht. 

 Graugrtlnlich, mit v/eisslicher Kehle und dergl. Bauch". 

 Nov; by no stretch of the imagination could the olive 

 sided flycatcher be described as grayish green and 

 that Lichtenstein had an entirely different bird in* 

 hand is evident not only from the description but from 

 the follovdng facts. The two specimens collected by 

 Deppe at Oaxaca were the basis of Lichtenstein 's name 

 of }>iyiarchus vill ica - a nomen nudum which appeared 

 in Les Nomenclator Avium LIus. Berol. , 1854, p. I6, 

 since both of them. are labelled 



M. vili.ica N 

 mas 

 Oaxaca 2^02 Gr. v. Sock 



Deppe. 

 [and 2^03] 



(Over) 



