Sotan GANNET. NATATORES. SULA. 459 
length, the radius (or second joint) measuring fully eight 
inches; and the legs are not placed so far behind as in the 
Cormorants, so that the horizontal position is preserved in 
walking. In its affinities it seems to connect the true Peli- 
cans with the genera T'achypetes and Phaeton. 
Piate 86*. Represents the Adult bird in about three-fifths 
of the natural size. 
Bill bluish-grey, with the tip fading into white. Naked General 
skin surrounding the eyes greyish-blue. The membrane cong 
forming the prolongation of the opening of the bill, and Adult 
that which extends beneath to the middle of the throat, a 
black. Irides pale-yellow. Crown of the head, occiput, 
and upper part of the neck, pale sienna-yellow. The 
rest of the plumage pure white, except the quills and 
bastard wing, which are black. Streak down the front 
of the tarsus, and along the upper part of the toes, 
bluish-green. Membranes of the toes blackish-grey, 
Claws greyish-white, the inner edge of the middle one 
being dilated and toothed. 
PiateE 87. The young of the year, about three-fourths of 
the natural size +. 
Bill blackish-grey, tinged with brown.  Irides pale clove- Young. 
brown. Ground colour of the head, neck, and whole First year. 
of the upper plumage blackish-grey, inclining to clove- 
brown, each feather being tipped with a triangular spot 
of white. Breast and abdomen white ; the feathers being 
edged with greyish-black. Quills and tail greyish-black, 
with the shafts of the tail-feathers white. Legs and 
toes deep-grey. 
Head, and greater part of the neck, white, more or less Second 
year. 
+ Temm™rncx has committed an error in describing the plumage of the 
Jirst as that belonging to the bird of the second year, and vice versa, in which 
he has been copied by Mr Sreruens and Dr FLemine. 
