SPIZA. MYOSPIZA. 459 



hinder crown, sides of neck, and upper throat white ; lower 

 throat black ; sides o£ the body pale ash-brown ; middle o£ 

 abdomen and under-tail coverts cream-white ; inner under wing- 

 coverts and axillaries white edged with yellow ; marginal under 

 wing-coverts and edge of wing yellow ; under surface of flight- 

 quills and lower aspect of tail pale greyish brown. 



Total length 156 mm., exposed culmen 12, wing 80, tail 54, 

 tarsus 24. 



The male described was collected on the Abary River in July 

 1906. 



Adult female. Differs from the adult male chiefly in the absence 

 of black on the throat and scarcely any yellow on the under 

 surface. Wing 83 mm. 



Breeding-season. Unknown in British Guiana. 



Mest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Abary River {McCbnnell collection). 



Extralimital Range. Trinidad, Aruba Island, Venezuela, 

 Colombia, Central America to the United States of North 

 America. 



Habits. Unrecorded in British Guiana. 



Gflnus MYOSPIZA Ridgw. 

 Myospiza Eidgway, Auk, xv. p. 224, 1898. Type M.Jiumeralis (Bosc). 



Fig. 173. — Myiospiza humeralis. 



In this genus the bill is also pointed and somewhat stout at the 

 base, where the depth and width are about equal, which is about 

 three-Hfths the length of the exposed culmen. The wing is 

 almost square, the second, third, fourth, and fifth primaries 

 longest and equal, the first about equal in length to the sixth. 

 The tail is square at the tip and about two-thirds the length of 



