438 DIOMEDEIDZ. 
saturate rufescenti-brunneo ; pedibus nigris. Long. tota circa 30-0, ale 19-7, caude 6-6, culm, 4-1 
tarsi 3-6. (Descr. maris adulti ex Oceano Pacifico septentrionali. Coll. ‘ Challenger.) 
Juv. adulto similis, sed supracaudalibus plerisque et subcaudalibus omnibus albis distinguenda. Long. tota 
circa 31:5, alee 20-0. Deser. av. jun. ex lat. N. 33°, long. W. 119°. Mus. nostr.) 
Hab. Nortu Paciric Ocxan , off Clarion Island, in the Revillagigedo group (Anthony 3). 
This species belongs to the smaller section of the genus Diomedea, in which the bill 
is more slender than in the Wandering Albatross (D. exulans) and its allies. It is 
distinguished by its sooty-brown abdomen, of the same colour as the interscapulary 
region and middle of the back. 
D. nigripes breeds in the North Pacific Ocean, and wanders southward along the 
coasts of China and North America. Mr. Anthony says that the only example of 
the species observed by him to the south of Cape San Lazaro was seen at a short 
distance from Clarion Island. 
_ The single egg in the Seebohm collection, from Sulphur Island, in the Bonin group, 
is described as “ dull brownish white, without markings” 4, 
THALASSOGERON. 
Thalassogeron, Ridgway, in Baird, Brewer, & Ridgway, Water-Birds N. Amer. ii. pp. 845, 357 
(1884) ; Salvin, Cat. Birds Brit. Mus. xxv. p. 449 (1896). 
The Albatrosses of the genus Thalassogeron differ from the species of Diomedea in 
having the base of the culminicorn narrower, and divided from the latericorn by a 
membrane. 
1. Thalassogeron culminatus. 
Diomedea culminata, Gould, P. Z. 8S. 1848, p. 107". 
Thalassogeron culminatus, Baird, Brewer, & Ridgway, Water-Birds N. Amer. ii. p. 858’; A.O. U. 
Check-l. Birds N, Am. 2nd ed. p, 28°; Salv. Cat. Birds Brit. Mus. xxv. p. 451 *. 
Supra fuliginoso-brunneus, pileo et collo pallide cineraceis, interscapulium versus saturate cinereum graduatim 
vergentibus ; regione circumoculari fuscescenti-cinerea, antice vix nigricante ; facie laterali albida, cinereo 
lavata ; corpore toto subtus pure albo; uropygio et supracaudalibus albis; cauda cinerascenti-brunnea, 
rectricum rhachidibus albis; remigibus fuliginoso-brunneis, primariorum rhachidibus fere albis, secundariis 
intus albicantibus; subalaribus et axillaribus albis, margine alari lato fuliginoso-brunneo: rostro 
nigricanti-corneo, culmine flavicante, apice albido, genyde flavicante; pedibus flavis. Long: tota circa 
32-0, ale 19°5, caude 7-7, culm. 44, tarsi 3:3. (Deser. avis adults ex Kerguelen Land. Mus. Brit.) 
Hab, Coast or Panama (Bridges +).—Souruzrn, Inpray, ano Sours Paciric Oceans J, 
visiting occasionally the temperate northern seas 4, 
A specimen of this Albatross said to have been procured in the Bay of Panama by 
Mr, Bridges is in the collection of the British Museum. Though a southern species, 
it occasionally wanders far north and has occurred in the Gulf of St. Lawrence. | 
TL’. culminatus may be recognized by its yellow culminal ridge, the sides of the bill 
being black; the culminicorn is rounded posteriorly, and the lower edge of the 
mandible is yellow 4. 
