CLARAYIS. LEPTOPTILA, 



47 



tips; Lead and entire underparts paler ^{rey than the hack ; hase 

 of forehead and throat whitish. 



Total length 100 ram., culmen IC, wing 116, tail 73, tarsus 17. 



The ahove description is taken from an example ohtained at 

 the Great Falls, Demerara River. 



Adult female. Differs from the adult male in heing rust-hrown 

 ahove, ^Yith darker hrown spots on the upper wing-coverts, and 

 paler rust-hrown on the fore-neck. Wing 107 mm. 



Breeding-season. Unknown in British Guiana. 



JS'est. Unrecorded in British Guiana. 



J^ggs. Undescrihed from British Guiana, 



Range in British Guiana. Bartica, Great Falls, Demerara River 

 (McConnell collection) ; Quoiiga, Ourunei (Wldtehf). 



Extralinntal Range. The greater portion of South America and 

 Central America to South Mexico. 



Habits. Unrecorded in British Guiana. 



Genus LEPTOPTILA Swains. 



Le2}toptila Swainsoii, Classif. Bu-ds, ii. p. 31:9, 1837. Type L. rufaxiUa 

 (Richard Si Bernard). 



This genus is distinguished hy its larger size, olive-hrown colour 

 ahove and pale vinous below, the first primary-quill attenuated at 

 the tip, and the tail more than half the length of the wing. 



Fig. 10. — To sliow tlie ineiscjJ lir.^t primary. 



' Key to the Species. 



A. Fore jiart of head, cheeks, and lower throat 



pale vinous like Die fore-neck L. rcnrauj'i, p. \^. 



B. Fore part of head hhiish grey ; cheeks and 



lowiT tliroat rufi>us in contrast with tiie fore- 

 nock L. nif axilla f ji. -IS. 



