JACANA. 183 



with brownish black and purplish gray. Hah. Pacific coast of North 

 America, from Lower California north to the Aleutian Islands and 

 across to the Kurils — 287. H. bachmani AuD. Black Oyster-catcher. 

 Length 18.00-20.00, wing 10.25-10.80, culmen 2.82-3.00, greatest depth of 

 bill anterior to nostril .60, tarsus 2.10-2.20, middle toe 1.70-1.75. Hah. 

 Coast of Chili. 



H. ater Vieill. Chilian Black Oyster-catcher.i 



Family JACANID^E. — The Jacanas. (Page 143.) 



Genera. 



(Characters same as those given for the Family) Jacana. (Page 183.) 



Genus JACANA Brisson. (Page 183, pi. LVL, fig. 6.) 



Species. 



Adult : Head, neck, chest, and upper back uniform greenish black ; quills and 

 secondaries pale yellowish green, bordered at tips with dusky ; rest of plumage 

 uniform rich purplish chestnut. Young : Top of head grayish brown, bordered 

 along each side by a broad superciliary stripe of bufly white ; a dusky streak be- 

 hind eye extending to hind-neck, which is also dusky or dull brownish ; rest of 

 head and neck, with whole lower parts, except sides, buify white; upper parts 

 grayish brown, the feathers more or less distinctly tipped with rusty buff (obsolete 

 in older specimens), the quills pale greenish, as in adult. Length about 8.50, wing 

 4.50-5.40, culmen 1.15-1.40, tarsus 1.90-2.35, middle toe 1.85-2.25. Eggs 1.22 X -94, 

 olive-tawny or tawny olive, marked all over with confused " pen-lines" of black, and 

 occasional ''blots" of same. Hah. Whole of Middle America, from northern Mexico 

 (including the lower Eio Grande Valley in Texas) to Panama ; Cuba ; Haiti. 



288. J. gymnostoma (Wagl.). Mexican Jacana. 



1 ffxmatopus ater Vieill., Gal. Ois. ii. 1825, 88, pi. 220. 



