1. ZENAIDURA. 373 



broad and much rounded, but the 

 primaries decidedly longer than 



the secondaries 6. GEOTRYGONINA?, 



b. Feathers of the neck hackled, very long [p. 537. 



and narrow 7. CALCENADINJE, p. 614. 



Subfamily I. ZENAIDIN.*:. 



Key to the Genera. 



a. Scapulars and innermost upper wing-coverts 



spotted with black. 

 a'. Tail of 14 feathers ; bill moderate and almost 

 straight. 

 a". Tail rather long, graduated or cuneate . . 1. Zenaidura, p. 373. 



b" . Tail moderate and rounded 2. Zenaida, p. 379. 



b' '. Tail of 12 feathers, rather short and 

 rounded ; bill rather long and much bent 

 downwards 3. Nesopelia, p. 390. 



b. No black spots on the scapulars ; a white patch 



on the exterior upper wing-coverts ; first two 

 primaries slightly scooped towards the apical 

 third of the inner web ; tail moderate, 

 rounded, and rather broad 4. Melopelia, p. 391. 



1. ZENAIDURA*. 



lype. 



Zenaidura, Bp. Consp. Av. ii. p. 84 (1854) Z. caroliuensis. 



Perissura, Cab. J. f. O. 1856, pp. Ill, 112 Z. carolinensis. 



Zenaedura, Coues, B. North- West, p. 389 (1874). 



Runye. From Northern to Central America and West Indies. 



* Zenaidura vucatanensis, Lawr. Ann. Lye. N. Y. ix. p. 208 (1869) (Merida, 

 Yucatan); G. R. Gr. Hand-lust, ii. p. 236, n. 9284 (1870) ; B., B., $ R. 

 y. Am. B. iii. p. 382 (note) (1874) (hybrid ?) ; Sale. Ibis, 1874, p. 312 ; 

 Sanchez. Ann. Mil*. Xae. Mexico, i. p. 105, n. 491 (1878) ; Ridyw. Auk, 

 i. p. 96 (1884) ; id. Pr. U.S. Nat. Mus. vii. p. 177 (1884). 

 Chamaspelia yucatanensis, Gieh. Thes. Orn. i. p. 63(1 (ls>72). 



Thanks to the authorities of the Smithsonian Institution, I have been able to 

 examine the type of Zenaidura yucatanensis, and I quite agree with the authors 

 Of the ' North American Birds' that it is so exactly intermediate between Zenai- 

 dura carolinensis and Zenaida amabiiis [potins yucatanensis] as to lead to the 

 suspicion that it is a hybrid between the two : like them, it possesses fourteen 

 tail-feathers ; the coloration and size and shape of the bill are exactly those of 

 yucatanensis, while the tail-feathers are intermediate in length and 

 shape between those of the two species. The colours ditfer from those of 

 S only in being of a just perceptible lighter shade, there 

 bong the sarno broad white tip to the secondaries, brilliant steel-blue sub- 

 auricular spot, and deep reddish vinaceous crissum characterizing Zenaida 

 sis as distinguished from Zenaidura carolinensis', with the latter 

 species it agrees in the white of the apical portion of the tail-feathers, while 

 in /. yucatanensis the same apical portion is constantly grey. 



