2 1 8 Bulletin American Museum of Natural History. [Vol. XI I. 



This form differs from S. cestuans (type locality, Surinam) in 

 having all the tints very much stronger throughout. It differs 

 also from its nearest geographical ally, S. chapmani from Trin- 

 idad, in being much lighter colored and less ruddy throughout, 

 and consequently still more from S. hoffmanni. 



