172 LAEID^. 



hi". The white on the basal third of 

 3rd quill scarcely passing the shaft 



on the inner web hartlaubi, p. 240. 



D. Adult. Head without a hood ; tail white. 

 Young. Head striated, and upper tail-coverts 

 and tail mottled, with brownish; under- 

 parts brown. (Size larger: wing more 

 than 14 inches.) 

 g. Quills mostly black. 



k'. Mantle sooty black to dark slate-colour. 

 I". Mantle deep sooty black. 



i". Size very large, wing over 19 

 inches ; terminal two-thirds of 

 1st quill white, and a large mirror 

 on the 2nd quill ; feet flesh- 

 colour marinus, p. 241. 



k'". Size smaller, wing under 17 

 inches ; only a small white miiTor 



on 2nd quill ; feet olivaceous . . dominicanus, p. 245. 

 m". Mantle dark slate-grey to blackish. 

 V". Tarsus longer than middle toe and 

 claw. 

 e*. Smaller, but wing longer in pro- 

 portion (16-16"5 inches) ; tarsus 

 2-4, middle toe 2-1 ; mantle 



darker fuscus, p. 250. 



/*. Larger, but wing shorter in pro- 

 portion (17-18 inches) ; tar- 

 sus 2-75, middle toe 2*5 affinis, p. 254. 



m'". Tarsus shorter than middle toe 

 and claw. 

 g^. Smaller, wing 16'5 inches; no 

 grey on inner webs of outer 



quills occidentak's, p. 257. 



h*. Larger, wing 17-18 inches; 



inner webs of outer quills grey . schistisagm, p. 258. 

 /'. Mantle blue-grey to dark pearl-grey. 

 n". Larger, wing lG'75-18 inches, 

 w'". Mantle palest ; feet flesh-colour ; 



orbital ring pale yellow argentatus, p. 260. 



o'". Mantle darker; feet bright yel- 

 low ; orbital ring vermilion .... cachinnmis, p. 266. 

 p'" . Mantle darkest ; feet pale flesh- 

 colour ; orbital ring vermilion . . vegee, p. 269. 

 o". Smaller, wing not exceeding 16 

 inches, though long in proportion. 

 q'". Second quill devoid of white mir- 

 ror ; bill crimson, with black sub- 

 terminal zone ; legs blackish .... audouini, p. 271, 

 r'". Second quill with a white mirror. 

 i*. Bill coarser ; depth of lower 

 mandible at angle of genys 0"3 

 to 0-3o in. 

 e'. Mantle paler, pearl-grey; 

 subtermiual zone on bill 

 complete, well-detined, and 

 about 0'25 in. wide delawarensis, p. 273. 



