66 Nelson Description of New Birds from Mexico. 



sides of head and neck, including ear coverts, finely tipped or barred with 

 black. Abdomen white ; under tail coverts dark fulvous with heavy 

 black subterminal markings. 



The other female from Jalapa is similarly colored in every particular 

 except on mantle where the rufous borders of feathers are duller and the 

 gray centers more conspicuous. 



The dimensions of these specimens are as follows : No. 12404, 9 (type 

 of species), wing 128: tail 48 ; culmen 14; tarsus 34. No. 12405, 9 (topo- 

 type), wing 135; tail 50; culmen 14 ; tarsus 35. 



Dactylortyx thoracicus lineolatus (Gould). Striped Partridge. 



Odontophorus lineolatus Gray, Genera of Birds, III, p. 513 (1847), nornen 



nudum ; Gould (Perdix lineolata, Licht. MS. in Mus. Berl). Mon. 



Odont. Ill, pi. 32, with text (1850); Bon.. Compt. Rend., XLII, p. 



883(1856). 



Strophiortyx lineolatus Gray, Hand List Birds, II, 272 (1870). 

 Dactylortyx thoracicu8 Ogilvie-Grant, Cat. Birds Brit. Mus., XXII, p. 429, 



1893 (part). 



Distribution. Mountain slopes of southwestern Oaxaca and adjacent 

 part of Chiapas. 



Description of adult male (No. 116338, U. S. Nat. Mus. Santa Efigenia, 

 Oaxaca, Mexico, Nov., 1880. Collected by F. Sumichrast). Lower neck, 

 breast, and flanks gray with faint wash of buffy-brown anteriorly, be 

 coming heavier along flanks ; feathers marked with broad white shaft 

 streaks. Crown dark brown with very fine shaft lines of pale buffy ; 

 nape feathers streaked with broad buffy shaft lines and black borders ; 

 feathers of mantle with narrow white shaft streaks and gray webs, mot 

 tled with dull chestnut and black along borders. Scapulars, tertials, 

 and wing coverts with shaft lines of white or pale bufty ; upper webs of 

 these feathers irregularly mottled and barred with black and rich chest 

 nut ; lower webs grayish with wash of brown and marked with black 

 lines along borders. Primaries and secondaries dark gray mottled with 

 buffy along borders of primaries ; secondaries more distinctly mottled 

 and barred with buffy and blackish on outer webs. Back, rump, and 

 upper tail coverts nearly uniform buffy-brown with fine dark mottling. 

 Tail dark gray with blackish and buffy mottling in irregular cross-bars 



Dimensions : Wing 132 ; tail 55 ; culmen 14 ; tarsus 35. 



Dactylortyx chiapensis sp. nov. Chiapas Partridge. 



Odontophorus thoracicus Scl. & Salv., Ibis, p. 276, 1860 (Volcan de Fuego, 



Guatemala). ? 

 Odontophorus lineolatus Gray, List Gal linse Brit. Mus., p. 73, 1867 (part, 



Guatemala). 

 Dactylortyx thoracicus Ogilvie-Grant, Cat. Birds Brit. Mus., XXII, p. 429, 



1893 (part). 



Type No. 155539, TJ. S. Nat. Mus., Biological Survey Coll. Ad. JS San 

 Cristobal, Chiapas, Mexico, Sept. 25, 1895. Collected by E. W. Nelson 

 and E. A. Goldman. 



