NO. 1910. REVISIOy OF BUTORIDES VIRESCENS—OBERHOLSER. 571 



BUTORIDES VIRESCENS TOBAGENSIS. new subspecies. 



Chars, suhsp. — Resembling Butondes virescens grenadensis, but 

 wing and tail slightly longer; bill more slender; neck, and sides of 

 head, particularly cheeks and juguluin, lighter, more fidvescent, the 

 hind neck somewhat duller. 



Description. — Type, adult [jM'obably male], No. 18033, Museum of 

 Comparative Zoology; Tobago Island; R. W. Rawson. Pileum, 

 occipital crest, postocular region, and a short subauricular streak, 

 deep, glossy bottle green; malar stripe bufTy white; submalar stripe 

 tawny chestnut mixed with blackish; cheeks, auriculars, sides and back 

 of neck, tawny chestnut, somewhat purplish and duller posteriorly; 

 upper surface of body deep, more or less glossy, bottle green, the long, 

 pointed, plume-like feathers of back and scapulars somewhat glaucous 

 and inclining to bluish ; wings fuscous, the primaries and outer secon- 

 daries dull, dark, greenish-blue slate color, the innermost primaries and 

 outermost secondaries narrowly tipped with white; tertials, outer webs 

 of imier secondaries, with all the superior wing-coverts, dark, glossy 

 bottle green; outer scapulars on exterior w^ebs and the first rows of 

 lesser wing-coverts margined all around rather narrowly with tawny 

 ochi-aceous, the other rows and the median coverts with buff, the 

 greatt^r coverts and outer webs of tertials and innermost secondaries 

 with wliite; tail dark, glossy bottle green; chui and middle of upper 

 throat creamy white, the latter streaked medially with clove brown ; 

 jugulum rather purplish tawny chestnut, much streaked medially 

 with white, slightly with pale clove brown; breast, abdomen, sides, 

 crissum, and axiUars slate gray with a sUght brownish tinge, the longest 

 feathers of lower tail-coverts with slate-colored terminal ]H)rtions; 

 thighs dull tawny mixed with grayish brown; lining of wijig slate 

 gray, the feathers margined with buff or ochraceous, the edge of wing 

 broadly bufTy white. 



Measurements. — Male:^ Wing, 1G7.5-178 (average, 172.5) mm.; 

 tail, 63-66.8 (64.7); exposed culmen, 55-63 (58.3); height of bOl at 

 base, 11-12 (11.4); tarsus, 46.5-51 (48.4); middle toe, 43.5-45 

 (44.4). 



Type-locality. — Tobago Island, West Indies. 



Geographical distribution. — Tobago Island, West Indies. 



This new subspecies is mudi like Butorides virescens maculatus, 

 but is smaller, except the length of the bill; and the neck and sides of 

 head, particularly the cheeks and jugulum, are more fulvescent. 

 From Butorides virescens lucianus it iliflVrs in having the neck antl 

 sides of the head duller, darker, less glaucous purplish, and, espe- 

 ciall}^ on cheeks and jugulum, more fulvescent. It is distinguishable 

 from Butorides virescens hypemotius by its lighter, duller, more rufes- 



Four specimens, from the island of Tobago, West Indies. 



