PROCELLARIA GLACIALOIDES. — Smith. 
Aves. — Plate LI. (Male.) 
P. supra cineracea, subtus alba; capite cerviceque albis, flavo-cinerco-tinctis; remiglum primarium 
tcctricibus, remigibus primariis secondariisque externe brunneo-xubris, interne ultimis duabus albis . 
caudi pallide cinerescente ; corporis lateribus antice ct postick griseo-coeruleo-tinctis. Rostro supra 
purpureo-cseruleo, infra subcarneo; mandibularum apicibus livido-mgris. Pedibus livido-griseis. 
Oculis rubro-brunneis. 
Longitcdo a rostri apice ad basin caudae 13 unc. (i liu. ; caudse 5 nnc. -3 lin. 
Colour, &c. — The head and the hack and sides of the neck white, with a dis- 
tinct tinge of yellowish grey, very faint towards the base of the bill ; the inter- 
scapulars, rump, upper tail coverts, lesser wing coverts, secondary quill 
coverts, and scapulars, ash-grey, tinged with yellowish grey ; under parts pure 
white; the flanks anteriorly and posteriorly clouded with pearl-grey. The 
outer vanes of the primary quill coverts and quill feathers, together with the 
inner vanes of the latter near their tips, brownish red ; the outer vanes of the 
secondary quill feathers white towards the base, brownish red towards the 
point, the inner vanes of these and of the primary quill feathers, except the 
portion already particularized, pure white; the inner vanes of the primary 
quill coverts pearl-grey. Tail feathers pale ash-grey, changing into white on 
the inner vanes. All the feathers exhibit a faint satin-lustre. Upper mandible 
from base to hook dull lavender-purple, slightly tinged with lake red, base 
of hook greenish white, tips of both mandibles livid black, the remainder of 
the lower mandible a pale flesh colour. Legs and toes livid grey ; webs 
lighter, with a flesh coloured tint. Eyes deep reddish brown. 
°Form, &c.— Figure moderately robust, and more rounded than that of the 
smaller species of the genus. Head considerably elevated above the bill, 
and superiorly rounded ; bill strong, somewhat subcylindrical towaids the 
base, compressed near and at the point. The nasal tube depressed, and the 
septum, which divides it interiorly into two canals, does not quite reach to its 
anterior extremity, hence the actual opening is entire ; the hook of the man- 
