DENDROETTX. 287 



Members of this family are found in all the temperate and tropical portions of the 

 globe, but no true Pheasants or true Partridges occur in America, which possesses only 

 species with a serrated bill. 



Subfam. ODOJ^TOPEOmym. 

 The American Partridges, consisting of the Colins and their allies, are peculiar for 

 their toothed or seiTated bill, a feature found in the lower mandible of all the species 

 of the Xew World. 



DEXDRORTYX. 



Dendrortyx, GoxM, Monogr. Odontoph. t. 20 (1844), Introd. p. 20 (1850); Grant, Cat. Birds Brit 

 Mus. xxii. p. 392 (1893). 



The long-tailed American Partridges form a well-marked genus, including four 

 species peculiar to Mexico or Central America. They are rather large birds, about the 

 size of the Common Grey Partridge, and may be easily recognized from the other 

 Odontophorinse by their long wedge-shaped tail composed of twelve feathers, which is 

 nearly as long as the wing. The sexes are similar in plumage, the bill very stout and 

 short ; there is a short crest and a naked space round the eye ; the first flight-feather 

 is much shorter than the tenth, and the tarsus is shorter than the middle toe and claw. 



1. Dendrortyx macnirns. 



Ortyx macroura, Jardine & Selby, 111. Om. i. text to t. 38 and t. 49'. 



Dendrortyx macrourus, Gouldj Monogr. Odontoph. t. 20^; Grant, Cat. Birds Brit. !Mua. xxii. 



p. 392 '; Handb. Game-Bii-ds, ii. p. 112* j Ibis, 1902, p. 237 \ 

 Dendrortyx macrurus, Sel. P. Z. S. 1864, p. 178'; Snmichr. La Nat. v. p. 229 ' ; Salv. Cat. Strickl. 



Coll. p. 572 \ 

 Dendrortyx oaxacm. Nelson, Auk, xiv. pp. 43, 44 '. 

 Dendrortyx macrourus griseipectus. Nelson, 1. c. p. 4i '°. 

 Dendrortyx macroWrus striatum, Nelson, 1. c. pp. 44, 45 ". 

 Dendrortyx macrourus dilutus, Nelson, Auk, xvii. p. 254 '". 

 Tetrao marmorata, La Llave, Reg. Trim. i. p. 144 " ; La Nat. vii., App. p. 65 "*. 



Grisescenti-olivascenti-bmnneus, brunneo miuute irroratus, fasciis irregularibus albidis vel ochracescentibus 

 notatus ; tectricibus alarum et secrmdariis dorso concoloribus ; primariis branneis baud vermiculatis ; 

 supracaudalibus minute brunneo irroratis ; rectricibus brunueis, medianis panlluluin bchracescente nioroque 

 vermiculatim fasciatis ; pileo nigricante, plumis ochracescenti-brunneo terminatis ; nucha magis mfescente ; 

 colli et interscapnlii plumis medialiter castaneis, utrinque cinereo clare marginatis ; capitis laterib-i* et 

 gutture toto nigris, Unea lata supercUiari et altera infra-auriculari albis ; praepectore et pectore toto cum 

 colli lateribus cinereis, medialiter castaneis, quasi late striatis ; pectore medio et abdomine summo sordide 

 albicantibus ; hypochondriis imis, crisso et subcaudalibus grisescenti-brunneis, his saturatioribus, omnibus 

 iudistincte albido nigroque transfasciatim lineatis ; subalaribus eodem modo eoloratis ; remigibus intus 

 brunneis : rostro, pedibus et iride corallinis, unguibus bmnneis. Long, tota circa IS-O, alie 69 

 caudse 70, culm. 0-3, tarsi 2-0. (Descr. avis adulti ex Valley of llexico. Mus. nostr.) 



