Or 
APPENDIX. 82 
SHELL-DRAKE. 
Goosander Weaser. 
Mergus Merganser, Wils. 
Specific Character —Forehead low; head rounded, 
crested; bill bright red, the ridge black, high at 
base; upper mandible much hooked. Adult male 
with the head and upper part of the neck greenish- 
black ; lower portion of the neck white; under 
plumage light buff, delicately tinged with rose-color, 
which fades after death; sides of the rump greyish- 
white, marked with undulating lines of dusky; fore 
part of the back and inner scapulars glossy black ; 
hind part of the back ash-grey ; the feathers margined 
and tipped with greyish-white, lighter on the rump ; 
upper tail-coverts grey, the feathers marked with 
central streaks of dusky; tail feathers darker ; pri- 
maries dark brown; wing coverts and secondaries 
white, the outer webs of the latter edged with 
black; the basal part of the greater coverts black, 
forming a conspicuous band on the wings; under 
tail-coverts white, outer webs marked with dusky 
grey, which is the color of the greater part of the 
web; bill and feet bright red. Female with the head 
and upper part of the neck reddish-brown ; throat 
and lower neck in front white; breast and abdomen 
deeply tinged with buff; upper parts and sides of 
the body ash-grey; speculum white. Length of 
male, twenty-seven inches; wing, ten and a half. 
Female about three inches smaller. Young like the 
female. 
