BREWSTER : BIRDS OF THE CAPE REGION, LOWER CALIFORNIA. 139 



Ammodramus rostratus guttatus (Lawe.). 

 St. Lucas Sparrow. 



Passerculus (juttatus Lawrence, Ann. Lye. Nat. Hist. N. T., VIII. 1867, 473 forig. 



descr. ; type from San Jose). Cooper, Orn. Cal., 1870, 185 (elescr. ; crit. ; 



figures head ; San Jose). Baird, Brewer, and Ridgway, Hist. N. Anier. 



Birds, L 1874, pi. 25, fig. 1. Ridgway, Nom. N. Amer. Birds (Bull. U. S. 



Nat. Mas., no. 21), 1881, 23, 63, 74, no. 195; Proc. U. S Nat. Mus., IIL 1880, 



2 (crit.); VL 1883, 158, footnote ("doubtful"; crit.; S. Lower Calif.). 



CocES, Check List, 2d ed., 1882, 52, no. 231. 

 [Zovotrichia] guttata Gray, Hand-list, II. 1870, 95, no. 7,413. 

 [Passprculus] guttatus CouES, Key N. Amer. Birds, 1872, 136 (descr. ; San Jose'). 

 Passerculus rostratus, yar. guttatus CouES, Check List, 1873, 33, no. 160 a. Baird, 



Brewer, and Ridgway, Hist. N. Amer. Birds, I. 1874, 544, pi. 25, fig. 1 



(crit. ; Cape St. Lucas). Jasper, Birds N. Amer., 1878, 154, pi. 104, fig. 14 



(San Jose'). 

 P.[asserculus] guttatus Ridgway, Proc. U. S. Nat. Mus., V. 1883, 537-539 (crit. ; 



San Jose del Cabo). Salvin and Godman, Biol. Centr.-Amer., Aves, I. 



1886, 382 (crit.). Coues, Key N. Amer. Birds, 4th ed., 1894, 364 (descr. ; 



Cape St. Lucas). 

 Ammodramus rostratus guttatus lUvow AY, Ttoc. U. S. Nat. Mus., VIIL 1885,355. 



A. 0. D"., Check List, 1886, 267, no. 544 a. Bryant, Proc. Calif. Acad. Sci., 



2d ser., II. 1889, 299 (measurements of type; San Jose del Cabo; Santa 



Margarita Island). 

 Passercufus rostratus Sharpe, Cat. Birds Brit. Mus., XII. 1888, 680, 681, part 



(Cape St. Lucas). 

 A.[mmodramns] rostratus guttatus Ridgway, Man. N. Amer. Birds, 2d ed , 1896, 



410 (descr. ; vicinity of Cape St. Lucas). 

 Ammodramus halophilus :McGregor, Auk, XV. 1898, 265-267 (orig. descr.; type 



from Abreojos Point; descr. nest and eggs). 

 Passerculus rostratus halophilus Ridgway, Birds N. and Midd. Amer., pt. I. 1901, 



202 (descr. ; Abreojos Point). 

 [Passerculus] rostraijis Dubois, Synop. Avium, fasc. IX. 1901, 631, part. 

 Passerculus rostratus guttatus Ridgway, Birds N. and Midd. Amer., pt. I. 1901, 201, 



202 (descr. ; San Jose' del Cabo). 



Under the name Ammodramus halophilus Mr. R. C. McGregor has character- 

 ized a bird which he found breeding at Abreojos Point, Lower California, as 

 " most closely related to A. rostratus guttatus, but * uniformly larger and much 

 darker; upper parts decidedly olivaceous instead of olive grayish.'" The in- 

 cluded quotation was taken by Mr. McGregor from a letter \vTitten by Mr. Ridg- 

 way, who has since adopted the form as a subspecies in his Birds of North and 

 Middle America, while it has been similarly recognized in the Tenth Supple- 

 ment to the A. 0. U. Check List. 



It does not seem to me justifiable, however, to regard halophilus as distinct 

 from guttatus until we have learned where the latter breeds, and especially 



