1868.] ON NEW AMERICAN BIRDS. 327 



liar form in Central America, when nothing is known of its occur- 

 rence elsewhere, except in the wood- region of Brazil. We have little 

 doubt, however, that some species of the genus will eventually be 

 found somewhere in the more northern part of South America. 



Arce"s specimens of this species were obtained at Calovevora, in 

 Veragua. The example described is marked " female ;" but the 

 sexes are probably alike. The second is a young bird of the same 

 sex, in which the scarlet crest is only just commencing to show itself. 



6. MONASA GRANDIOR, Sp. nOV. 



Schistacea ; capita undique, alls et cauda nigricantibus, ceneoper- 

 fusis : front e, loris et yula albis : rostro mberrimo, pedibus 

 nigris : long, tota, 12, alee 5*7, caudce 5'4. 



Rab. Costa Rica, Angostura (Carmiol) ; Mosquitia (Bell). 



Mus. S.-G. 



Obs. SiniiHs 3f. morphea ex Brasilia, et crassitie majore et capite 

 undique nigricantiore vix diversa. 



A Costa-Rican collection recently received from Mr. Carmiol 

 contains a single skin of this Monusa, which, as above pointed out, 

 is so like the Brazilian M. morpheus that we have had some difficulty 

 in distinguishing it. As, however, the intermediate territory between 

 the ranges of these two near allies is occupied b}' two other species 

 (viz. M. pallescens, Cass., of New Granada, and M. peruana, Bp., 

 of Upper Amazonia), both of which are recognized as distinct, we 

 have deemed it advisable, in conformity with the laws of geogra- 

 phical distribution, to bestow a name upon the present bird, although 

 its distinctive characters are not very pronounced. In some drawings 

 of birds collected on the Mosquito coast by Mr. Bell, submitted 

 some years ago to Sclater, was a figure which there can be little doubt 

 (from Sclater's notes taken at the time) must have been intended to 

 represent this species. We may therefore conclude that it extends 

 its range northwards into Mosquitia. 



A complete synonymy of the six known species of Monasa is given 

 by Mr. Cassin in the ' Proceedings of the Academy of Sciences of 

 Philadelphia' for 1860 (p. 135). The present bird makes the 

 seventh of the genus. See also * Museum Heineanum,' Scansores 

 (p. 126 et seq.), where a good account of the group is given. 



7. Gymnoglaux LAWRENCii. (Plate XXIX.) 



In an article on Cuban birds in the 'Annals of the Lyceum of 

 New York' (vol. vii. p. 247), Mr. Lawrence has correctly pointed 

 out the differences which subsist between the two known species of 

 the Antillean genus Gymnoglaux, but has unfortunately committed 

 an error in their nomenclature. Mr. Lawrence has referred the 

 Cuban bird to the Strix nudipes of Daudin, and has proposed to 

 call the species of the Virgin Islands Gymnoglaux newtoni. A 

 recent inspection of the type specimens of Strix nudipes in the Paris 

 Museum (those obtained by Mauge in Porto Rico), and a compa- 

 rison of them with a skin from St. Thomas's, has convinced us that 

 these birds are identical, and perfectly distinct from their Cuban 



