the Imperial Collection at Vienna. 51 



tarsus 1" SV", its breadth 2f; outer toe 1" 3^", claw 2'"; 

 middle toe 1" 3'", claw 3"'; inner toe 12'", claw 2±'"." 



The island of Galega, which lies north-east of Madagascar, 

 is indeed a very remote habitat from that indicated by La- 

 tham ; but Puffinus obscurus is also found in the South Seas, 

 in the Indian Ocean, and on both shores of the Atlantic. 



I believe it also not impossible that Latham indicated erro- 

 neously King George's Sound on the American coast, and 

 that King George's Sound in Australia was meant. 



The dimensions of a specimen of P. obscurus, described by 

 Natterer (19th May, 1839), are as follows :— 



Length 13", wing 7" 6'", middle tail-feathers 2" 11'" (their 

 breadth 8'"), the outer 5"' shorter; from the end of the wing 

 to the longest secondaries (in the folded wing) 2" 5'"; bill, 

 from angle of mouth 1" 7'", from front 1" 4'", from nostril 1" 1'"; 

 tarsus I" 6V" (its breadth 3'"); outer toe 1" 6'", claw 2'"; 

 middle toe 1" 5"', claw 3'"; inner toe 1" 4"', claw 3"'. 



Rectrices 11. 



Fifth primary the longest, second 1'" shorter. 



A very narrow margin on the fore end of the web obscure. 



Puffinus dichrous, Hartl. et Finsch (Fauna Centralpolyn. 

 244), from McKean's Island (Phoenix group), of which 

 there is a single specimen in the collection Godeffroy, seems 

 very similar to P. tenebrosus, but smaller, with dark hypo- 

 chondria, black bill, and blackish feet (only the interior side 

 of the tarsus brownish, and the webs pale brownish). The 

 accompanying sketches, made by Natterer, will show the shape 

 of the bill of P. tenebrosus, from King George's Sound, and 

 of P. obscurus. 



107. Diomedea exulans, Linne. (281.) 



Chocolate Albatross, Cook, Voy. ii. 116. 150; Forst. Voy. 

 i. 258 ; Parkins. Voy. 83, 84 (?) ; Lath. Gen. Synops. v. 308. 2 

 (Mus. Lever.). 



Diomedea spadicea, Gmel. Syst. i. 568 ; Lath. Ind. Orn. ii. 

 790. 2 (excl. var. /3, which belongs perhaps to D. brachyura). 



Our specimen (Sale Cat. n. 37, "last day but two, Diomedea 

 exulans yrisea") agrees well with Latham's description, of 

 which it is perhaps the type. 



e2 



