556 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.42. 



Measurements. — Male: ^ Wing, 156-165 (average, 161.7) mm.; 

 tail, 58-62.5 (60.3); exposed culmen, 51-64 (57.2); height of bill at 

 base, 10.2-12.8 (11.3); tarsus, 42.5-51 (45.3); middle toe, 38-41 (39.5). 



Female: 2 Wing, 156-164 (160.1); tail, 58-63 (59.9); exposed 

 culmen, 53.5-61 (56.7); height of bill at base, 11-12.2 (11.6); tarsus, 

 46-48 (47.1); middle toe, 39-41 (40.0). 



Type-locality. — Watling Island, Bahama Islands. 



Oeographical distribution. — Bahama Islands: Abaco, Acklin, Berry, 

 Bimini, Cay Lobos, Eleuthera, Great Inagua, Green Cay, Little 

 Abaco, Long, Mangrove Cay (near Andros Island), Mariguana, 

 New Providence, Northern Andros, Samana, Southern Andros, 

 Strangers Cay, Rum Cay, Watling, and doubtless other islands. 



This pale race is very different from Butorides virescens virescens, 

 being very much smaller, especially in length of wing, and much 

 lighter in color throughout. It is more nearly like Butorides virescens 

 eremonomus, of northern Mexico, but is much smaller throughout, 

 and averages paler, particularly on neck and sides of head, with the 

 neck more fulvescent. It is similar also to Butorides virescens 

 mesatus, but is smaller in all measurements, with paler neck and 

 sides of head. The juvenal plumage of Butorides virescens hahamensis 

 is like that of Butorides virescens antlionyi. 



The adult female is of about the same size as the male. The neck 

 in some fresh plimaaged birds is much darker and less fulvescent, and 

 the posterior lower parts darker, thus approaching some light examples 

 of Butorides virescens cubanus.^ There is great variation in the shade 

 of the neck, probably due in part to age and to wear of the feathers, 

 younger birds being usually somewhat paler. 



So far as I can discover, all the birds from the various islands of the 

 Bahama Archipelago are identical in both size and color, and this race 

 probably occm-s on most if not all of the islands in the group. It is con- 

 fined to the Bahama Islands, being resident there throughout the year. 



Nineteen specimens have been handled, from the subjoined locaU- 

 ties, breeding records being marked with an asterisk: 



Bahama Islands. — Watling Island;* Rum Cay;* Northern Andros 

 Island;* Southern Andros Island;* Alfred Sound (Great Inagua 

 Island); southern side of New Providence Island;* Abaco Island; 

 Mangrove Cay (near Andros Island);* Strangers Cay.* 



1 Ten specimens, from the Bahama Islands. 



2 Four specimens, from the same group of islands, 

 s See p, 557. 



