438 DIOMEDETD^. 



saturate rufescenti-brunneo ; pedibus nigris. Long, tota circa 30-0, alae 19-7, caudae 6-6, culm. 4-1 

 tarsi 3-6. (Descr. maris adnlti ex Oceano Pacifico septentrionali. Coll. ' Challenger.') 

 Juv. adulto similis, sed supracaudalibus plerisque et subcandalibus omnibus albis distinguenda. Long, tota 

 circa 31-5, alae 20-0. Descr. av. jun. ex lat. IS. 33°, long. W. 119°. Mus. nostr.) 



Ilab. North Pacific Ocean 2, off Clarion Island, in the Revillagigedo group {Anthony ^). 



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 " ^. 



THALASSOGERON. 



Thalassogeron, Ridgway, in Baird, Brewer, & Ridgway, "Water-Birds N. Amer. ii. pp. 345, 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 di\ided from the latericorn by a 

 membrane. 



1. Thalassogeron culminatus. 



Diomedea culminata, Gould, P. Z. S. 1843, p. 107'. 



Thalassogeron culminatus, Baird, Brewer, & Bidgway, Water-Birds N. Amer. ii. p. 358 '' ; A. O. U. 

 Check-l. Birds N. Am. 2nd ed. p. 28 ' ; Salv. Cat. Birds Brit. Mus. xxv. p. 451 *. 



Supra fnliginoso-brunneus, pileo et eollo pallide cineraeeis, interscapnlium versus saturate cinerenm graduatim 

 vergentibus ; regione circumoculari fuscescenti-cinerea, antice vix nigrieante ; facie lateraU albida, cinereo 

 lavata ; corpore toto subtus pure albo ; uropygio et supracaudalibus albis ; cauda cinerascenti-bmnnea, 

 rectricum rhachidibus albis ; remigibus foliginoso-brunneis, primariorum rhachidibus fere albis, secundariis 

 intus albicantibus ; subalaribus et axillaribus albis, margine alari lato fuliginoso-brunneo : rostro 

 nigricanti-comeo, culmine flavieante, apice albido, genyde flavicante ; pedibns flavis. Long, tota circa 

 32-0, alee 19'5, caudae 7'7, culm. 4 4, tarsi 3"3. (Descr. avis adultae ex Kergnelen Land. Mus. Brit.) 



Hah. Coast of Pajsiama {Bridges *). — Southern, Indian, axd South Pacific Oceans ', 

 visiting occasionally the temperate northern seas^. 



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. 



T. 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 *. 



