748 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



FALCO SPARVERIUS CARIBAEARUM Gmelln 



Antillean Sparrow Hawk 



Adult male. — Differs from that of the nominate race in the following 

 particulars: The rectrices have black shafts and marginal black spots 

 or incomplete bars anterior to the broad subterminal band; the scapu- 

 lars, interscapulars, and upper back are much more broadly and 

 numerously barred with black; the chestnut crown patch averages 

 smaller; the general color of the upperparts is slightly darker slate and 

 hazel; the black spots on the sides and upper abdomen are larger and 

 average more numerous; breast varies in tone as in nominate race. 



Adult female. — Similar to that of the nominate race, but generally 

 darker and more richly colored above, the chestnut crown patch 

 variable, but not attaining the maximum size found in Falco spar- 

 rerius sparverius; the black bars on the upperparts broader and 

 darker; the ventral markings much darker, dark sepia to fuscous 

 and tending to be wider, more tear-shaped. 



Juvenal male. — Differs from the adult in having narrow fuscous 

 streaks on the breast and the abdominal markings more streaklike; 

 the dorsal dark bars averaging broader. 



Juvenal female. — Similar to the adult, but with the breast more 

 abundantly streaked with fuscous-black lines; most birds indis- 

 tinguishable from the adult. 



Natal down. — ^Vhite. 



Adult male.—SS'mg 160-172 (165.4); tail 115-126 (121.9); culmen 

 from cere 12.5-14 (12.9); tarsus 36-39 (37.6); middle toe without 

 claw 22.5-25 (23.7 mm.).*^ 



Adult female.— SV'mg 160-178 (169.5); tail 121-138 (129); culmen 

 from cere 13-14 (13.7); tarsus 36-42 (38.8); middle toe without claw 

 23-27 (25.1 mm.).«3 



Range. — Resident in Puerto Rico and the Lesser Antilles — Puerto 

 Rico, Vieques, Culebra, St. Croix, St. Thomas, St. Jan, Tortola, 

 Jost van Dyke, Virgin Gorda, Anegada, Anguilla, St. Martin, Saba, 

 St. Bartholomew, St. Kitts, Nevis, Barbuda, Antigua, St. Eustatius, 

 Guadeloupe, Dominica, Les Saintes, Grande Terre, Montserrat, 

 Martinique, St. Lucia, Barbados, St. Vincent, Bequia, and Grenada. 

 Common on the northern, rare on the southern islands. 



Type locality. — None stated; = Lesser Antilles from references; 

 Dominica suggested by Swann (Synopt. List Accip., 1920, 155). 



(?) Yalco antillarum Gmelin, Syst. Nat., i, pt. 1, 1788, 264 (Antilles; based on 

 Accipiler aesalon antillarum Brisson, Orn., i, 1760, 104; Mans fenny Ray, 

 Av., 19; Du Tertre Hist, des Antilles, 2, 252; Buflfon, Ois., i, 144; Latham, 



** Twelve specimens from Puerto Rico, Anegada, and Saba. 

 *' Fifteen specimens from Puerto Rico; Barbuda; Guadeloupe; Anegada; and 

 Antigua. 



