CTANOCORAX. 589 



Total length 360 ram., exposed culmen 27, wing 196, tail 167, 

 tarsus 51. 



This species is not repiesented in the McGonnell collection, and 

 the description is taken from the specimen in the British Museum 

 collected by the late Sir Richard Schomburgk. Having compared 

 this specimen (Cabanis's type) with nine o'thers in the National 

 Museum, from East Peru, Ecuador, and Colombia, I find it to be 

 much paler in coloration. I propose, therefore, the British Guiana 

 bird be separated under Cabanis's name. 



Breeding-season. Unknown. 



Nest. Unrecorded. 



Eggs. Undescribed. 



Range confined to British Guiana. Canuku Mountains (Schom- 

 burgk) . 



Habits. Schomburgk writes (Eeis. Guian. iii. p. 683) of this 

 species as being rarer than C. cayanus, which it surpasses in bril- 

 liancy of plumage. He only had one specimen in his collection, 

 which he obtained in the Canuku Mountains. 



