No. 483] 



WOOD RAILS NORTH OF J'AXAMA 



185 



I find no indication of intergradation between A. cajanca and 

 A. alhiventris and must regard them as distinct species. The 

 much longer more slender bill of A. albiventris and tlie conspic- 

 uous chestnut patch on the back of the head, always serve to dis- 

 tinguish it in all its subspecies from A. cajaiiea. 



Type: from Bikmki Veru ("ruz. Mexico, a.lult 2, no. 



2281 Coll. of K. A. and ( ). Han.i^s. Colhvtcd Jimr 4. 1001, by 

 A. E. Colburn and P. W. Sliufcldt. 



Geographic DisriniU TioN : Soutlicrn Mexico, in States of 

 Vera Cruz, Tabasco, Oaxaca and (diiapas, north to Hidalgo (one 

 skin from Orizava no. 2!I2;)1, V. S. Xat. Mns.) and on the coast 

 at least to Tampico. 



Characters: Very simiUir to true J. aU)i rnitris, hnt pale 



narrower and less distinct, strong buff in color, not white or cream 

 buff; all the colors darker — gray of head and neck, greenish 

 olive of back, and tawny of breast; much less siitl'nsed with 

 ochraceous or taw^ny on scapulars and outer interscaj)ulars thongli 

 this marking is often indicated; throat less purely white, more 

 grayish and this marking more confined, extending less onto 

 under surface of neck. 



228P Type $ ad. Mexico, Vera Cruz, Biiena Vista. 177. 

 2280 cS'ad. " " " ISC. 



1415362 9 ad. Mexico, Vera Cruz, Tlacotalpam. 17'.». 



141537 (5^ ad. 

 141539 9 ad. 



' Coll. of E. A. and O. Bangs. 



'Coll. of Bureau of Biological Survey, Washington. 

 ^ Coll. of U. S. National Museum. 



