79 
This is a typical Conirostrum, and quite distinct, I think, from 
any species hitherto described. The members of this genus with 
which I am at present acquainted are— 
1. ConrROsTRUM CINEREUM (Lafr. and d’Orb.); D’Orb. Voy. 
Ois. pl. 59. fig. 1. From Tacna in Peru and Sicasica in Bolivia. 
2. ConrrostRuM RUFUM, Lafr. Mag. de Zool. 1843. Dacnis 
rufo-cinerea, Bp. Atti 6" Riun. Sc. It. 1845, p. 404, et Consp. 
p- 401. From Bogota. 
3. ControstRuM sitticoLtor, Lafr. Rev. Zool. 1840, p. 102. 
C. bicolor, Less.; Gray’s Gen. pl.34. From Bogota. 
4, ConrrostRUM ALBIFRONS, Lafr. R. Z. 1842, p. 301; Mag. 
de Zool. 1843, Ois. t. 35 (from which, I believe, C. atrocyaneum, 
Lafr. R. Z. 1848, p. 9, and C. ceruleifrons, 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. Lyc. 
New York, 1851, p. 112, pl. 5. fig. 1, from Texas (the same as 
Aigithalus flaviceps 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 yet recognized. 
2. SYNALLAXIS ERYTHROTHORAX, Sclater. (Pl. LXXXVI.) 
S. fuscus, olivaceo-tinctus, capite obscuriore: gutture nigro- 
cinereo: alis 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, ale 2°3, caude 2°5. 
Hab. in America Centrali; Coban 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 Coban 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 these Proceedings for 1837, p. 118, in which 
he includes the Synallawis cinerascens of Temminck (Pl. 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. 
