GKALLAEIA. 241 



2. Grrallaria mexicana. 



Grallaria guatemalensis, Scl P.Z.S. 1856, p. 294'; 1859, pp. 366 ^ 383'; Sumichrast, Mem. 



Bost. Soc. N. H. i. p. 556*; La Nat. v. p. 248'. 

 Grallaria mexicana, Scl. P. Z. S. 1861, p. 381 " ; 1864, p. 175 ' ; Cat. Birds Brit, Mus. xv. p. 313 ' ; 



Sumichrast, La Nat. v. p. 248 \ 

 Grallaria ?, Sumichrast, Mem. Bost. Soc. N. H. i. p. 556". 



Similis praeoedenti, sed plerumque major; subtus paJlidior, abdomine fere albicante, maculis peotoralibus magis 

 obviis. Long, tota 7-5, alee 5-1, caudae 2-1, rostri a rictu 1*4, tarsi 2-1. (Descr. exempl. typ. ex Jalapa, 

 Mexico. Mus. Brit.) 



Hah. Mexico, Valley of Mexico {Le Strange, White ''), Chimalpa (F. Ferrari-Perez),. 

 Ajusco ( W. JB. Bichardson), Alpine ^° and hot regions * of Vera Cruz, Moyoapam ^^, 

 Cordova ^, Omealca ^, Uvero ^ [Sumichrast), San Andres Tuxtla ^, Potrero ^, 

 Cordova {Salle), Jalapa^ [de Oca^), Playa Vicente {Boucard^), Omilteme in 

 Guerrero [Mrs. H. H. Smith). 



We are not very confident of the distinctness of this form from Q. guatemalensis, as 

 some Mexican specimens approach those of Guatemala more nearly in size than the 

 type, vphich appears to be an exceptionally large example. The plumage of the 

 underside of the former seems to be always paler in colour, especi«.lly on the middle 

 of the abdomen, which is nearly white in the more northern bird ; but our difficulty in 

 deciding this point is increased froiji-the limited series of specimens before us, and 

 several of those we have are young birds and therefore of no use for comparison. For 

 the present we keep all the Mexican birds under the title G. mexicana. 



Sumichrast ^^, as already stated, thought that two species of this form of Grallaria 

 are to be found in the State of Vera Cruz ; one he found at an elevation of upwards 

 of 8000 feet above the sea, the other in the hot country at a much lower level. This 

 difference of elevation in the range of this Grallaria does not, we think, imply much, 

 as G. guatemalensis is found within the same range of elevation without showing any 

 difference in size or colour. 



G. mexicana is chiefly known as a resident in the I'orests of the State of Vera Cruz, 

 but it also occurs in the Valley of Mexico and in the State of Guerrero. We have 

 young birds still possessing much of their first spotted plumage which were shot at 

 Omilteme (alt. 8000 feet) in the Sierra Madre del Sur, Guerrero, in July, and at Ajusco 

 in the Valley of Mexico, in September. 



3. Grallaria princeps. (Tab. LII.) 



Grallaria guatemalensis, Salv. P. Z. S. 1867, p. 146*. 



Grallaria princeps, Scl. & Salv. P. Z. S. 1869, p. 418 = ; Salv. Ibis, 1869, p. 312 ^ P. Z. S. 1870, 



p. 196 * ; Zeledon, An. Mus. Nac. Costa Rica, 1887, p. 115 ' ; Scl. Cat. Birds Brit. Mus. 



XV. p. 314°. 

 BIOL. CENTK.-AMEE., Aves, Vol. II., March 1892. 31 



