AMERICAN NATURAL HISTORY. 



2H 



Gould (J.)- On six newspecies of humming birds. — Proc. Zool. Soc. 



Lond. and Ann. & Mag. Nat. Hist. VII. 1851, 339. (160 

 Nov. sp. 



Selasphorus scintilla. Trochilus castaneoventris. 

 Thaumatias? chionura. niveoventer. 

 Tlialurania venusta. cceruleogularis. 



Lawrence (Gr. N.). On the occurrence of the Caspian Fern (Sylo 

 chelidon caspius) in North America. — Ann. Lyc. Nat. Hist. 

 New York. Y. 1851, 37. (161 



Lawrence (G-. N.). Description of a new species of Tyrannus. — 

 Ann. Lyc. Nat. Hist. New York. Y. 1851, 39. (162 

 Tyrannus Cassinii. Texas. 



Lawrence (G-. N.). Descriptions of new species of birds of the ge- 

 nera Conirostrum, D'Orb. and Lafr., Embernagra, Less, and 

 Xanthomus, Briss.,with a list of other species from Texas. — 

 Ann. Lyc. Nat. Hist. New York. Y. 1851, 112. (163 



Conirostrum ornatum. Xanthornus affinis. 



Embernaga rufivirgata. 



LAWRENCE (G-. N.). Additions to North American ornithology. 



Nos. 1 and 2. — Ann. Lyc. Nat. Hist. New York. Y. 1851, 

 117 and 123. (164 



Lawrence (O. N.), Descriptions of new species of birds, of the 

 genera Toxostoma, Wagler, Tyrannula, Swainson, and 

 Plectroplianes, Meyer. — Ann. Lyc. Nat. Hist. New York, 

 Y. 1851, 121. (165 



Toxostoma Lecontei. Plectroplianes McCownii. 



Tyrannula cinerascens. 



McCall (Gr. A.). Some remarks on the habits, etc., of birds met 

 with in western Texas, between San Antonio and the Hio 

 Grande, and in New Mexico; with descriptions of several 

 species believed to have been hitherto undescribed. — Proc. 

 Acad. Nat. Sc. Philad. Y. 1851, 213. (166 

 Cyanocorax Cassinii. Carpodacus obscurus. 



