

ADDENDA. 



MOMOTUS MARTII, Plate 23. 



We have been mistaken in quoting Priorities Martii of Spix and Mar- 

 tius, as a synonym for our specimen. The P. Martii of Spix and Martius, 

 seems to be described and figured yet only by these naturalists ; it is of a size 

 considerably larger, and on the under parts of a clear rufous brown, which, 

 in the other species, are of lighter or darker shades of green. The spe- 

 cies from which we took our drawing, and inadvertently quoted as synony- 

 mous with P. Martii, will stand as a fourth, under the title of Momotus 

 Mexicanus, Swainson, having been first noticed by that gentleman in the 

 Philosophical Magazine and Annals for June 1 827, p. 442. We have also 

 a fifth very curious species, described by Mr Leadbeater in the 16th vo- 

 lume of the Transactions of the Linnean Society, which we shall figure in 

 an early number : the size is about that of M. ntficapillus, and the colours 

 of the plumage somewhat resembling its congeners. It is, however, re- 

 markable for the developement of the bill, which is carinated, flat, and 

 widely dilated at the base, and the edges are minutely and regularly ser- 

 rated. 



The genus will now stand thus : 



1. M. MOMOTA. 



2. M. RUFICAPILLUS. 



3. M. mexicanus, — Prionites Mexicanus, Swains. 



4. M. Martii, — Prionites Martii, Spix fy Mart. 



5. M. tlatyrhynchus, Leadbeater. — The last may be thus characterised : 



M. flavescente-viridis, capite, collo pectoreque castaneis; striga per oculos notis- 

 que thoracicis nigris ; rostro latissimo tomiis minute serratis. 



PLUVIANUS ARMATUS, Plate 54. 

 Is described by Burchell in Travels, vol. i. p. 501. 



MEROPS ATHERTONI, Plate 58. 



Mr Swainson has constituted this, with the M. Amictus of Temminck, 

 into a genus, under the title of Nyctyornis *. The following are the cha- 



* The drawings of General Hardwicke represent what appears to be a third species of this 

 highly interesting group. 



