226 ANATIDZ. 
common near Mazatlan, in Western Mexico, during the same period. It frequents 
the bays on the coast in winter, but during the breeding-season is found only on fresh- 
water lakes and rivers. 
This bird, known in many parts of North America as the “ Whistler,” is recorded 
as very shy and wary, and is possessed of exceptional diving powers; it is also of very 
powerful flight. The eggs, which are of a pea-green or greyish-green colour, are 
laid in stumps or holes of hollow trees, the cavity being lined with the bird’s own 
down. 
Y 9. Olangula albeola. 
Anas albeola, Linn. Syst. Nat. i. p. 199°. 
Bucephala albeola, Dugés, La Nat. i. p. 148°. 
Charitonetta albeola, A. O. U. Check-l. N. Amer. Birds, 2nd ed. p. 54’. 
Clangula albeola, Baird, Brewer, & Ridgw. Water-Birds N. Amer. ii. p. 48‘; Salvad. Cat. Birds 
Brit. Mus. xxvil. p. 385 ’. 
Supra nigra, supracaudalibus grisescentibus ; scapularibus externis albis, harum longioribus anguste nigro termi- 
natis; alis sicut in C. glaucion coloratis, sed tectricibus marginalibus albo limbatis; rectricibus saturate 
cinerascenti-brunneis, externis albo marginatis; capite et colli dimidio summo metallice viridibus ; pileo, 
collo laterali et gutture purpurascente nitentibus, plaga magna postoculari alba, usque ad occiput 
extensa ; torque collari albo; corpore reliquo subtus albo: rostro cyanescenti-nigro ; pedibus rosaceis, 
palmis saturatioribus; iride saturate brunnea. Long. tota circa 15:0, ale 7:0, caude 3:5, culm. 1:0, 
tarsi 1-1. (Descr. maris adulti ex Massachusetts. Mus. nostr.) 
Q. Supra brunnescenti-nigra, uropygio nigro, supracaudalibus brunnescentioribus; alis caudaque brunnescenti- 
nigris, secundariis medianis extus apicem versus albis, speculum alare formantibus; capite et collo 
saturate brunneis, vix purpureo nitentibus; genis et regione parotica albis, aream longitudinalem albam 
formantibus: subtus pure alba, prapectore griseo lavato; corporis lateribus, crisso et subcaudalibus 
brunnescenti-griseis: rostro fusco; pedibus et iride sicut in mari coloratis. Long. tota circa 12°5, alee 6-0, 
caude 3:0, culm. 1:0, tarsi 1:0. (Descr. femine adulte ex Tarpon Springs, Florida. Mus. nostr.) 
Juv. haud a femina adulta distinguenda. 
lab. NortaH America, breeding from Maine and Montana northward through the 
Fur Countries to Alaska, migrating south in winter °.—Mexico, Chihuahua 
(Kennerly *), Tamaulipas (Berlandier*), Guanajuato (Dugés*).—Cuba 3 °,—Acci- 
dental in Europe °. 
The Buffle-headed Duck rarely occurs within true Central-American limits, but 
it has been recorded from Guanajuato by Professor Dugés 7, and is said by Dr. Ber- 
landier to be found in winter in Tamaulipas on the borders of the rivers and marshes 
in that State *. Dr. Kennerly also records that this Duck was found in large flocks at 
the Boca Grande in Chihuahua, and also at other points on the Conalitos and Janos 
Rivers 4. 
C. albeola is an inhabitant of the Arctic and Subarctic Regions of North America, 
breeding in the far north in summer. The bird lines the cavity of a tree with its own 
down for the reception of the eggs, but otherwise makes no nest. ‘Though not at 
