2ob Elliot 0)i the yacauidce. rj"'y 



about an inch, botli vanes being widely bordered with black externally. 

 Tiic whole plumage, both above and below, excepting of course the black 

 of wings and tail, is much lighter — almost pure white — than in examples 

 of T. personata from other localities. Size of T. personata. 

 Type, No. 30,489, Am. Mus. Nat. Hist., New York City. 



Habitat. Headwaters of the Napo, Ecuador. 



In T. personata^ the only species with which this need be 

 compared, the black of the head is restricted to the chin, the 

 malar region, the anterior half of the ear-coverts, and a broad 

 band behind and above the eyes, joining the black of the front of 

 the head, which extends from the base of the bill to a line about 

 opposite to the middle of the orbits. In T. nigricefs the black 

 covers the wliole throat and head, extending to the nape, and in- 

 cluding the whole of the auricular region. The nape is also 

 black, with the feathers in part edged with white. The black 

 oftheheadis thus quite as extended as in T. cayaiia.,\y\\\\ the 

 addition of a ivholly black throat. 



The material examined in this connection numbers ii3 spec- 

 imens, representing, in good series, all the known species of the 

 genus. In this connection I desire to acknowledge my indebted- 

 ness to the kind offices of Mr. Robert Ridgway in sending me 

 for examination the specimens of Tityra contained in the U. S. 

 National Museum. 



THE JACANID^. 



BY D. G. ELLIOT, F. R. S. E. 



My material for this review has been obtained from the follow- 

 ing sources. The Jacanida; in the general collection of the Amer- 

 ican Museum of Natural History, New York, specimens from 

 the Lawrence collection and those of Messrs. Smith and Rusby, 

 also in the Museum. From Boston I have received specimens 

 from the Boston Society of Natural History, and Mr. C. B. Cory ; 

 and also all the specimens in the National Museum at Washing- 

 ton, amounting altogether to about one hundred examples, quite 



