144 THE VOYAGE OF H.M.S. CHALLENGER. 



10. Pagodroma nivea, Gm. 



Prdcellaria nivea, Gm., Syst. Nat., vol. i. p. 562. 



Pagodroma nivea, Coues, Pr. Ac. Phil., 1866, p. 160; Salv., Proc. Zool. Soc, 1878, p. 737. 



[a, h. Females. lee Barrier. February 14, 1874. 



Only seen south of 60° S. lat., near the Antarctic ice, and often sitting on the ice- 

 bergs. Sometimes great numbers followed the ship.] 



11. Daption capensis, Linn. 



Procellaria capensis, Linn., Syst. Nat., vol. i. p. 213. 



Daption capensis, Cones, Pr. Ac. Phil., 1866, p. 163; Salv., Proc. Zool. Soc, 1878, p. 737. 



[a. Antarctic Sea. April 1874. 



This bird is found all over the southern and Antarctic Oceans. It was abundant about 

 the Antarctic ice.] 



12. CEstrelata lessoni, Gam. 



Procellaria lessoni, Gain., Ann. Sc. Nat., 1826, vol. vii. p. 51. 



CEstrelata lessonia, Cones, Pr. Ac. Phil., 1866, p. 112; Coues and Kidd., Bull. U. S. Nat. 



Mus., No. 2, p. 27; Sharpe, Zool. Kerg., Birds, p. 26; Salv., Proc. Zool. Soc, 1878, 



p. 737. 



[a, b. Males. Betsy Cove, Kerguelen. 



c-f. Females. Betsy Cove, Kerguelen. 



Eyes black. 



This is the Mutton-bird or White Night-hawk of the whalers. It builds under large 

 clumps of Azorella, like Ma/jaqueus cequinoctialis, and generally has similar habits. In 

 the nest is one white egg. In the stomach beaks of cuttle-fishes are usually found. We 

 did not notice it south of Heard Island.] 



During a recent visit to the Paris Museum I had an opportunity of examining the 

 type of CEstrelata sericea, concerning which I had occasion to publish some notes in the 

 Ibis for 1875 (p. 373). On seeing this type I at once recognised a specimen of CEstrelata 

 lessoni! CEstrelata sericea (Less.), placed in the genus Adamastor by Bonaparte and 

 Coues, has therefore no existence as a species distinct from CEstrelata lessoni. 



13. CEstrelata mollis, Gould. 



Procellaria mollis, Gould, Ann. and Mag. Nat. Hist., vol. xiii. p. 363. 



CEstrelata mollis, Coues, Pr. Ac. Phil., 1866, p. 150; Salv., Proc. ZooL Soc, 1878, p. 738. 



[a, b. Nightingale Island. October 17, 1875. 

 Eyes hazel. Night bird.] 



