436 Zoological Society : — 



Lafr. R. Z. 1848, p. 9, and 0. cceruleifrons, Lafr. R. Z. 1842, p. 302, 

 only differ in age or sex). From Bogota. 



Conirostrum superciliosum of Hartlaub, R. Z. 1844, p. 215, and 

 Bp. Consp. p. 402. sp. 5, is a true Sylvicola of Swainson, the same 

 as Parula mexicana, Bp. Consp. p. 310, and has of course nothing 

 to do with these birds. 



The only other species that have been referred to this genus, as 

 far as I am aware, are Conirostrum ornatum, Townshend, Ann. Lye. 

 New York, 1851, p. 112, pi. 5. fig. 1, from Texas (the same as 

 Mgithalus Jlaviceps of Sundeval, according to Dr. Hartlaub), and the 

 C fuscum and colombianum of Lesson, Descr. d. Mamm. et Ois. 

 pp. 273 and 274, none of which I have as yeC recognized. 



2. Synallaxis erythrothorax, Sclater. 



S. fuscus, olivaceo-tinctus, capite obscuriore : gutture nigro- 

 cinereo : alls extus, nisi parte apicali, tectricibus subalaribus 

 et vitta lata pectorali rufo-castaneis : ventre medio cineras- 

 cente, lateribus brunnescenti-olivaceis : cauda brunnea : rostro 

 nigro : pedibus brunneis. 



Long, tota 5*3, alse 2*3, caudse 2*5. 



Hab. in America Centrali ; Cohan et Honduras. 



Of this Synallaxis, which seems different from all other members 

 of the genus that I am acquainted with, there is a specimen in the 

 Derby Museum procured at Cohan by Delattre in 1843. The 

 British Museum contains an example from Honduras, and I have a 

 single skin in my own collection purchased in Paris, which I believe 

 to be from the same locality. The occurrence of species of this 

 group north of the Isthmus of Panama seems hitherto unnoticed, 

 except by the Prince Charles Bonaparte, in a list of a Guatimala 

 collection of birds in the Proc. Zool. Soc. for 1837, p. 118, in which 

 he includes the Synallaxis cinerascens of Temminck (PI. Col. 227. 

 fig. 3). But the characters there given do not at all agree with 

 Temminck' s bird, and would seem more applicable to the present 

 species. Besides, the true Synallaxis cinerascens is said to be from 

 Brazil, and is not likely to occur also in Guatimala. 



In my specimen of the present species the throat is slightly speckled 

 with whitish. 



3. Ramphoc^nus cinereiventris, Sclater. 



R. olivaceo-brunneus ; capitis lateribus rufisy spatio postoculari 

 nigro : alls extus brunnescentibus : gutture albo, nigro-cineras- 

 cente striato : abdomine cinerascente, medialiter albescentiorCy 

 lateraliter autem olivascentiore : cauda nigricanti-fusca : rostri 

 mandibula superiore nigrescente, hujus autem apice et mandi- 

 bula inferior e albidis. 

 Long, tota 4*0, alse 2 0, caudse 1*3. 

 Hab. in rep. Novae Grenadse, Pasto. 



A third species of this peculiar genus, beautifully intermediate in 

 colouring as in locality between the Ramphocftnus melanurus of 

 Brazil and the rufiventris of Central America. "When I say a third 

 species, I am perhaps doing an injustice to M. Lesson, who has 



