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May, i9o 7 BIRDS COLLECTED ON CERROS, SAN BENITO AND NATIVIDAD IS. 79 April 18. This subspecies, lately described by Oberholser from Llano de Yrais, Lower California, appears to be a well-marked form. Miraus polyglottos leucopterus (Vig.). Two specimens: A male and female, both adults, April 19. Thryoraanes bewickii cerroensis (Anthony). Thirteen specimens, including adults of both sexes, and two young, a male and a female; the adults taken March 27 to April 14, and the two young April 17. The characters that separate this form, peculiar to Cerros Island, from 7: bewicki/charenlurus of the coasts of southern California and northern Lower California, are well marked in this series, and the subspecies is a very good one. Salpinctes obsoletus obsoletus (Say). Nine adults, both sexes, March 27 to April 4. Corvus corax clarionensis Roth. & Hart. Four specimens, both sexes, April 4 to April 6. From the accompanying measurements of these four skins, it would seem that the raven of Cerros Island is rather nearer to C. C. c[art'oitois[s than to (?. COl'?lX $l'itltallt$ of southern Mexico; all skins examined in this connection, how- ever, from Sonora and the western United States are nearly if not quite inter- mediate and might ahnost as well be referred to one as the other race. The four skins afford the following measurements, in millimeters: Depth of bill at Wing Tail Tarsus Culmen nostril A. ad. c? 396 2t4 68.5 72. 25. 5 B. youngish ? 363 ?94 66. 65. 22. C. ad. ? 406 2?8 66. 70. e3. 5 D. ad. ? 395 2?6 68. 68. 23 ' Lanius ludovicianus garabeli Ridg. Three females, two adult, one young, April 3 to April 21. Icterus cucullatus nelsoni Ridg. Two specimeus, a youug male April 18, and a female (?) April 17. Astragalinus psaltria hesperophilus Oberholser. Three specimens, two males and a female, April 1 to April 6. Carpodacus mexicanus cleraentis (Mearns). Seven specimens, three adult lnales, three adult females, and oue young female in nestling plumage, March 30 to April 12. This form had previously been found as far south as Todos Santos Island, Lower California; but it was a surprise to us to find that the Cerros Island bird was wholly referable to it and so very different from C. mcg'reg'or/ of the nearby San Benito Islands. There can be no question as to the identification of the skins. We not only worked over them very carefully ourselves, but sent them to Mr. Harry C. Ober- holser who compared them with a large amount of material and pronounced them identical with specimens from the Santa Barbara Islauds. Passercultts rostratus sanctorum. (Ridg.). One young male, in the moult, changing from the nestling to the autumnal plumage, April 21. This individual may have been a straggler from San Benito Island, where Mr. Brown found the bird very common. /iraphispiza bilineata deserticola Ridg. Six specimens: four adults, both sexes, and two young males in nestling plumage, March 26 to April 7. These skins are like more northern ones, except in being a trifle smaller in all measurements. Spizella breweri Cassin. One adult male, March 30. Zaraelodia raelanocephala (Swains.). One adult female, April 12.