1825.] Journal of the Academy of Natural Sciences, S^c, 307 



3. Description of a new Speqies of Mammalia whereon a 

 Genus is proposed to be founded. By T. Say and G. Ord, p. 

 352. 



N. G, Sigmodon. Teeth eight above, eight below, cutting two 

 in each jaw; grinders six in each jaw, nearly equal with radicles, 

 and with very deep alternate folds towards the summit ; tail 

 hairy ; feet simple ; toes 5-5^ fifth front toes very small, clawed. 



This genus is alhed to Arvicola, and indeed Dr. Harlan has 

 placed the species in that genus. 



S. hispidum. Head thick ; snout elongated ; eyes rather 

 large ; ears large, round ;' tail nearly as long as the body ; hairs 

 of the upper part of the body long, coarse ; length of body six 

 inches ; tail four inches. Jn the young species the black pre- 

 dominates, and in the adult the yellow. East Florida. 



All the four papers on Ornithology, are by the late Prince 

 Charles Bonaparte, certainly the best American ornithologist, 

 whose recent death we have to lament. 



The first is Observations on the Nomenclature of Wilson-s 

 Ornithology. This is the continuation of a series of papers in 

 which the author corrects the synonima quoted, and adds numef 

 rous others, and corrects .the systematic arrangement of the 

 beautiful work of Wilson which he commenced completing. 



The others are Descriptions of 13 new Species of South 

 American Birds, p. 350, 370, and 387. 



1. Fringilla ocanthorea. Dusky; rump yellow; primaries 

 edged with green ; tail tipped with white ; length A\ inches ; 

 bill like jP. senwMS. liio Janeiro. The bird was tame, and sang 

 like a canary, and, like other Antarctic birds, sang most in the 

 winter. 



2. Monassa fusca. Fuscous brown ; sh?ft of the feathers 

 yellow ; primaries and tail feathers not spotted ; throat spotted 

 •with white ; chest with a black band. Tamatia brun. Vaillant 

 H. N. des Barbns, t. 43. Tail with twelve feathers. 



3* Picus rubricollis, Gmelin, Var. 



4. Dendrocalaptes Angusturostris, Vieill. Fulvous brown, 

 beneath white. All the feathers (except those of the throat) 

 edged with black ; beak elongated, shghtly arched, compressed ; 

 length 7-1- inches. 



5. Fringilla Jiaviola, Lin, 



6. Tanagra,Jiava, Gmelin. Sericeous yellow ; knees, throat, 

 chest, middle of the abdomen, wings, and tail, yellow ; primaries 

 and tail edged with greenish blue ; length 5i- inches. Lindo 

 bello, D'Azara. Tanagra cholroptera? Veillot, T. cayana, 

 orfemP. Desmarest, 



7. Mnscicapa violenta, n. s. Tail six inches long, deeply 

 forked ; body grey, beneath white ; head black ; feather of the 

 vertex go den yellow at the base. Tyranus Violenta, Vicillot, 



8. Muscicapa tceni optera, n, s. Grey wings and tail ; black 



x3 



