Our figures of this species are taken from skins in ]\Ir. Sclater's collection,— tlie adult being 

 a " Bogota" skin, and the young bird in spotted plumage from Ecuador. 



In our article on Cichlopsis, we have already indicated our views as to the correct position 

 of the ge'nus Mi/i'adesfes, in the natural scries. It belongs, no doubt, to the family Turdida^, 

 from which the so-called Sylviidae of the Old World camiot be dissociated. Besides the general 

 external form, the power of song, and the character of the immature plumage, lead to this 

 interpretation of its affinities. The continental species of this group, taking them according to 

 their geographical disti-ibution, from north to south, are, — 



1. M. TOWNSENDI. 



Ptilogonys toivnsendi, And. 



Myiadestes tovmsendi, Baird, Eev. A. B. p. 429. 



Sah. Mountainous regions of middle and western states of N. America (Baird). 



2. M. TTNiooLOB (Plate XXV). 



Sab. Eastern portion of Soutliern Mexico, and northern districts of Vera Paz. 



3. M. OBSCFEUS (Plate XXVI). 



Sai. Southern Mexico, principally on the western side ; Western Guatemala, and Southern Vera Paz. 



4. M. SIELAlfOPS. 



Myiadestes melanops, Salviu, P.Z.S. 1864, p. 580, t. xxxt ; Baird, Eev. A. B. p. 426. 

 Hab. Eastern slope of Costa Eica. 



5. M. EALLoiDEs (Plate XXVII). 



Hab. Subandean vallies on both slopes from Caraccas to Bolivia. 



AuGrsT, 1867. 



[54] 



