Mr. P. L. Sclater on the Fissirostral family Bucconidse. 481 



2. MOXASA FLAVIROSTRIS, Strickl. 



Monasa flavirostris, Strickl. Cont. Ora. 1850, p. 47. pi. 48. 

 axillaris, Lafr. Rev. Zool. 1850, p. 216. 



M. nigra : tectricibus alarum ininoribus superioribus et infe- 



rioribus niveis : rostro flavo : pedibus plumbeis. 

 Long, tota 8'2; alse 4*3; caudae 3"75. 

 Hub. in Peruv. Or. Rio Xegro (Lafr.); Nova Grenada (?). 



Mr. Strickland and the Baron de Lafresnaye published their 

 respective discoveries of this bird about the same time, but I 

 think Mr. Strickland's name has slightly the priority. Mr. 

 Strickland's specimen was, I believe, from the upper branches of 

 the Amazon, M. de Lafresnaye's from the Rio Negro ; the bird 

 therefore in all probability ranges along the liead-watei*s of both 

 streams. The locality of ' New Grenada ' I give on the authority 

 of specimens in ray own collection, which have the usually un- 

 mistakeable appearance of ' Bogota ' skins. 



This species may be easily distinguished from the preceding 

 by its smaller size, yellow bill and snowy-white under and upper 

 lesser wing-coverts, and the greater wing-coverts not being edged 

 with white. 



3. MOXASA NIGRIFRONS (SpLx). 



Bucco nigrifrons, Spix, Av. Bras. i. p 53. t. 43. fig. 2. 

 Lypornix unicolor, Wagl. S. A. sp. 2. 



Monasa nigrifrons, Gray's Gen. i. p. 74 ; Gray, List, of B. M. p. 49 ; Bp. 

 Consp. p. 147. 



M. nigro-plumbea unicolor : rostro rubro : pedibus nigris. 



Long, tota 9'8; alte 5'0 ; caudae 4*7. 



Hab. in vicinitate Parse (Wallace) ; in sylvis fluminis Amazonum 



(SpLy); Bolivia (?). 



The M. atra appears to be replaced upon the Amazons by the 

 present species, which was first discovered by Spix. It has no 

 appearance of white upon the wings, the whole plumage being 

 nearly uniform plumbeous black. 



A skin of Mr. Eyton's is labelled 'Bolivia,' so it possibly ranges 

 as far as the extreme streams of those tributaries of the Amazon 

 which flow from that country. 



4. Monasa personata, Vieill. 



Monasn personata, Vieill. Gal. des Ois. pi. 36 (1820) ; Enc. Meth. p. 1339. 

 Bucco leucops, Liclit. Yerz. d. Doubl. p. 8 (1823). 



. alhifrons, Spix, Av. Bras. vol. i. pi. 41 (1824). 



alhifrons sive leucops, Spix, I. c. p. 53. 



Lypornix leucops, Wagl. S. Av. sp. 3. 

 Capita leucops, Max. Beit. iv. 368. 



Ann. i^ May. N. Hist. Ser.2. Vol.\n\. 31 



