REVISION OF THE CLAPPER RAILS — OBERHOLSER 343 



Type locality. — Tobari Bay, southern Sonora, Mexico. 



Geographic distribution. — Permanent resident in the coast region 

 of central and southern Sonora, from Guaymas to the boundary of 

 Sinaloa. 



Remarks. — The jugulum in this subspecies is entirely without gray, 

 being uniform cinnamon hke the breast. Color phases are not so 

 marked in this race, although there are two that are well defined, a 

 brown and a gray, involving only the upper parts. 



The follo^ving specimens have been examined: 



Sonora: Tobari Bay (April 28, 1930,^^ April 30, 1930, May 1, 

 1930); Guaj^mas (May 5, 1930); Viejo Yaqui Lagoon (May 12, 1930). 



RALLUS LONGIROSTRIS NAYARITENSIS Mcl^llan 



San Blas Clapper Rail 



Rallus nayaritensis McLellan, Proc. California Acad. Sci., ser. 4, vol. 16, no. 1, 

 p. 9, Jan. 31, 1927 ("San Bias, Nayarit, Mexico"). 



Subspecijic characters. — Similar to Rallus longirostris rhizophorae, 

 but wing and tail shorter; upper parts darker, less grayish (more 

 ohvaceous) ; cmnamon on jugulum duller but yet without a gray wash. 



Description. — Type, sex unknown, California Academy of Sciences 

 no. 28184; San Bias, Nayarit, Mexico, October 19, 1925; Miss M. E. 

 McLellan; origmal number, 483. Pileum fuscous, verging toward 

 hair brown on the forehead, the feathers with stiff, shiny, blackish- 

 brown shafts; cervix dark hair brown with narrow lighter edgings 

 between drab and grayish olive, these edgings imparting a streaked 

 appearance; back, upper tail-coverts, and tail, fuscous black, the 

 feathers all edged with lighter, on the back with light grayish ohve, 

 on the upper tail-coverts with rather brownish deep grayish olive, 

 and on the tail with a darker shade of the same; wings fuscous, the 

 lesser wing-coverts with the outer portion of outer median and greater 

 coverts more or less extensively rufescent brown, between snuff 

 browm and Saccardo's umber, the inner coverts, tertials, and scapulars, 

 broadly margined with dull grayish olive; sides of head mouse gray, 

 rather darker on the lores, the auriculars w^ashed with buff; supraloral 

 streak creamy white; sides of neck mouse gray washed with buffy; 

 chin and upper throat, white; malar stripe and jugulum between 

 avellaneous and pinkish cinnamon; breast deep vinaceous cinnamon, 

 posteriorly paling to light pinkish cinnamon; sides and flanks between 

 hair brown and chaetura drab, narrowly barred with dull white, and 

 posterior portion of flanks paler and washed with buff; abdomen 

 creamy white, laterally washed with light pinkish cinnamon; lower 

 tail-coverts between hair brown and chaetura drab, narrowly barred 

 with white, anteriorly somewhat washed with buff, but the lateral 



« Type. 



