46 FALCONID. 
the differences, and we agree with Dr. Coues‘ that “var. striatulus” is untenable. 
The late J. H. Gurney was of the same opinion. 
This Goshawk was long ago stated by Wagler to be found in Mexico’, but neither 
Sallé nor his immediate followers nor Sumichrast make any mention of it. Nevertheless 
it undoubtedly not only occurs in Northern Mexico but breeds there. Our first 
Mexican specimen was received from Mr. William Lloyd, who shot it in Sonora on 
April 13th, 1888, a fully adult bird. Subsequently Mr. Richardson secured two young 
birds in the Sierra de Nayarit, which were not fully feathered and had but lately left 
their nest. They were shot on June 20th, 1889. In North America Astur atricapillus 
is chiefly known as a northern bird, breeding beyond the limits of the United States 
and in the higher mountains further south. It feeds chiefly on game-birds and poultry 
and has a bad character for its raids on poultry-yards®. Full accounts of the habits of 
the species are to be found in Bendire’s® and other works °°’. 
ACCIPITER. 
Accipiter, Brisson, Orn. i. p. 810 (1760) ; Sharpe, Cat. Birds Brit. Mus. i. p. 180. 
The range of Accipiter coincides approximately with that of Astur, but it is more 
strongly represented in both North and South America than that genus. It may be 
divided into two sections—one represented by A. coopert and A. bicolor, large birds 
with rounded tails; the other by A. velox and A. chionogaster, smaller, more slender 
birds with the tail nearly square at the end. 
Of the former two species are found within our limits, and of the latter three. 
The slender tarsi and long toes of the American species of Accipiter readily distin- 
guish the genus from Astur; moreover, the former are covered in front by a single 
shield instead of by short scutella. 
—1. Accipiter cooperi. 
Falco cooperii, Bp. Am. Orn. 11. p. 1, t. 10. f. 1°. 
Accipiter cooperi, Scl. P. Z. S. 1859, p. 389°; Scl. & Salv. Ibis, 1859, p. 401°; Lawr. Ann. 
Lyc. N. Y. ix. p. 134°; Mem. Bost. Soc. N. H. ii. p. 298°; Bull. U. S. Nat. Mus. no. 4, 
p- 41°; Dugés, La Nat. i. p. 1388"; v. Frantz. J. f. Orn. 1869, p. 369°; Sharpe, Cat. Birds 
Brit. Mus. i. p. 187°; Sumichrast, La Nat. v. p. 236"; Salv. Cat. Strickl. Coll. p. 494” ; 
Bendire, Life Hist. N. Am. Birds, 1. p. 192”; Fisher, Bull. U. 8. Dep. Agr. no. 3, p. 38,t.5". 
Nisus cooperi, Ridgw. Pr. Ac. Phil. 1875, p. 78". 
Nisus cooperi, var. cooperi, Ridgw. in Baird, Brew., & Ridgw. N. Am. Birds, iii. p. 231". 
Accipiter mexicanus, Swains. Faun.-Bor. Am., Birds, p. 45". 
Accipiter couperi mexicanus, Ridgw. Pr. U. 8. Nat. Mus. xi. p. 92”, 
Nisus cooperi, var. mexicanus, Baird, Brew., & Ridgw. N. Am. Birds, iii. p. 231”, 
Supra schistaceus, capite summo et tectricibus alarum minoribus obscurioribus; genis pallide griseis, fusco 
striatis : subtus rufus, plumis singulis maculis utrinque tribus albis, rhachidibus nigris ; gutture fere albo, 
striis nigricantibus notato; tectricibus subcaudalibus pure albis; tibiis saturate rufis, albo striatis: alis 
] 
