niiiiis — rinji'iriDAE — cyrtonyx massena. 



647 



the feathers. Those on the neck are light brown, not black. The crest is tinged with brown 

 next to the whitish. Feathers of the breast and belly with the shafts dark brown, occupying 

 the centre of a dark V-niark, the apex pointing backwards, and the brandies divaricating more 

 and more posteriorly. 



In one specimen of this bird from New Leon, 39U9, there is a large brownish chestnut spot on 

 the middle of the belly, ([uite conspicuously diflerent from what is seen in other skins. 



List of specimens. 



Catal. 

 No. 



.'^•x. 



Locality. 



9385 



9387 



9386 



5102 



15104 



15105 



15103 



9381 



3999 



9 

 S 



9 



Wbcn collected. Whence obtained. 



Himbres to Rio Gmnde Dr. Henry.. 



New Mexico Capt. Pope . 



do 1 do 



Solidad caDoD, Organ mts., N. M.^ Mar. 10, 1856 | do 



do.... 



do.... 



do 



Mr. Clark .. 



Permanent camp, Pecos, N. M Sept. 5, 1855 



Pecos, N.M ' June 6,1856 



Permanent camp on Pecos, N. M. 

 San Pedro 



May 22, 1855 



I 



New Leon, Mexico Lt. Couch . 



Orig. Length. 

 No. 



Stretch , 

 of wings, j 



182 

 123 

 198 

 115 

 22 

 106 



9.50 

 12.00 

 12.00 

 10.00 

 11.00 

 10.50 



Wing. 



13.50 

 14.50 { 

 16.00 j 

 14.60 

 15.00 I 

 14. 12 



4.50 

 5.00 

 5.00 

 4.50 

 5.00 

 4 50 



1 Bill and eyes brown, feet flesh-colored. 



CYRTONYX, Gould. 



Cijrlonyz, Gould, Mon. Odontoph. ? 1845. Typo Orhjx masstna, Lesson. 



Cn. — Bill very stout and robust Head with a broad soft occipital crest of short decumbent feathers. Tail very short, lialf 

 tho length of the wings, composed of soft feathers, the longest scarcely longer than tlie coverts ; much graduated. Wings long 

 and broad, the coverts and tertials so much enlarged as to conceal the quills. Feet robust, extending considerably beyond the 

 lip of the tail. Claws very large, the outer lateral reaching nearly In the middle of the central anterior. The toes without the 

 claws, however, are very short. 



This genus differs very much from its North American allies in the great development of 

 the feathers composing the wing coverts, the very short and soft tail, and the very short toes 

 and long claws. It is almost worthy of forming the type of a distinct sub-family, so many and 

 great are its peculiarities. The single North American representative is the only one of our 

 species with round white spots on the lower surface aud black ones above. A second species, 

 C. ocellatus, is found in Mexico. 



CYRTONYX MASSENA, Gould. 



Masseua Partridge. 



Ortyx mosseiia, Lesson, Cent. Zool. 1830, 189. 



Ci/r/oni/i masseiia, Gocld, Mon. Odont. 1850, 14; tab. vii.— M'Cali., Pr. A. N. Sc. V, 1851, iiil — Cassls, lllust. 



I, I, 18.'>3, 21 ; pi. xxi. — Reichenb. Syst. Av. 1850, pi. xxvii. 

 Ortyx monlezumae, Vigors, Zool. Jour. V, 1830, 275. 

 Odonlophorus meUagris, Wacler, Isis, XXV, 1832, 279. 

 Tetrao gvUata, De la Llave, Rcgislro trimcstrc, I, 1832, 145. (Cassin.) 



