816 



U. S. p. R. H. EXP. AKD StTRVEYS ZOOLOGY GENERAL REPORT. 



LOPHODYTES CUCULLATUS, Reich. 



Hooded Merganser, 



Mergus cucnUatus, Linn. Syst. Nat. I, 1766, 207.— Gmeli.v, I, 544.— Wilson, Am. Orn. Vni, 79; pi. Ixix.— Bon. Obs 

 No. 251.— Sw. F. Bor. Am. II, 1831, 463.— Nuttall, Man. U, 465.— Add. Orn Biog. HI, 1835, 246 : 

 V, 619 ; pi. 233.— Ib. Syn. 299.— Ib. Birds Amer. VI, 1843, 402 ; pi. 413.— Evton, Men. Anat. 177. 



Merganser cucullatus, Bonap. List, 1838. 



Loplwdi/tes cucuUatus, Reich. Systema Avium, 1852, p. ix. — Bonap. Comptea Bendus, XLIII, 1856. 



Raund-cresUd Duck, Oatesby, Carol. 



Hooded Merganser, Pennant, 



Sp. Ch. — Head with an elongated, compressed, semicircular crest. Anterior extremity of nostril reaching not quite as far as the 

 middle of commissure. Frontal feathers extending nearly as far as half the distance from lateral feathers to nostril ; the latter 

 much beyond the feathers on side of lower mandible. Bill shorter than head. 



Male. Bill black. Head, neck, and back black ; under parts and centre of crest white. Sides chestnut brown, barred with 

 black. White anterior to the wing, crossed by two black crescents. Lesser coverts gray ; white speculum with a basal and 

 median black bar ; black tertials streaked centrally with white. 



Female with a shorter and more pointed crest. The head and neck reddish brown ; the back without pure black ; the sides 

 without transverse bars ; the white of wings less extended. 



Length, 17.50; wing, 7.90; tarsus, 1.20; commissure, 1.98. 



Hab. — Whole of North America. 



The hlack- border of the crest is about a quarter of an inch deep, the central portion snowy 

 white. The lower part of back and rump are dark brown. The greater coverts and secondaries 

 are black, tipped with white ; the black showing at the base of both as two bars. The middle 

 coverts are ashy gray. The white of secondaries is confined to the outer webs. The axillars 

 and inside of wing are white. 



The female has a much smaller crest, more like that of the female of the other species. The 

 head, neck, and jugulum are grayish chestnut brown ; the back and top of head dark brown ; 

 the chin whitish ; the under parts purer white. The wing is somewhat similar ; the white 

 more restricted, especially on the tertials ; the middle coverts dark brown. The bill appears to 

 be blackish above, and reddish below. 



Some specimens, perhaps young males in female plumage, have the reddish feathers of the 

 crest passing into whitish at the tips. 



List of specimens. 



Catal . 

 No. 



5475 

 S941 

 9875 

 9876 

 9874 

 9873 



Locality. 



Yellowstone river... 

 DoSa Ana, New Mexico 



Fort Thorn 



Fort Steilacoom 



do 



, do 



When col- 

 lected. 



Whence olilaincd. 



July 24 



Nov. 21, 1855 



Feb. 2,1854 



Lieut. Warren. 

 Capt. Pope .... 



Dr. Henry 



Gov. Stevens. . , 



do 



do 



Orig'l 

 No. 



Coliected by — 



Dr. Hayden. 



Dr. Suckley. 



do. .... 



do. ... 



Length. 



19.00 



Wing. 



Remarks. 



Bill brown, iris yellow, feet gray. 



