300 
Count T. Salvadori on 
Count Turati—the last being an immature bird, while the 
three others are fully adult. 
The comparison of these specimens shows quite clearly 
that the southern birds are smaller, have constantly the grey 
pectoral band, more or less pronounced, and have the sides 
of the body less freckled with grey. The northern liirds are 
larger, have no grey band across the breast, and the sides of 
the body more freckled with grey. 
It seems also that the habits of the two species are different: 
the southern birds being quite pelagic, while the northern 
birds, according to Signor Fea's statements, are more noc¬ 
turnal, resorting to their stony furrows on the mountains 
at day, and going to sea at night. 
Convinced of the specific value of the differences pointed 
out, I have accordingly named the northern bird (Estrelata 
fece (see p. 302). 
I add the full synonymy and the descriptions of the two 
species, together with some remarks on their geographical 
distribution. 
*f- CEstrelata mollis (Gould). 
Procellaria mollis Gould, Ann. N. H. xiii. p. 363 (20th to 
40th deg. S. lat.) (1844); id. B. Austr. vii. pi. 50 (1848) ; 
Rchnb. Nov. ad Syn. Av. Natatores , t. 25. ff. 2606-7 (ex 
Gould) (Dec. 1850); Licht. Nom. Av. p. 100 (Siid-See) 
(1854) ; Layard, Ibis, 1862, p. 98 (lat. 44° S., long. 138° E.); 
Schleg. Mus. P.-B., Procellaria , p. 11 (Mer de FAustralie) 
(1863); Pelz. Reise ‘ Novara,’ Zool. i. Vog. p. 146 (“Indischer 
Ocean, gegen St. Paul zu, ? Stiller Ocean, nachst Neu-See- 
land ”) (1865) ; Hutton, Ibis, 1865, p. 287 (S. Ocean), 1867, 
pp. 188, 191 (between lat. 35° 40'S., long. 4° 28' W., and lat. 
39°30 / S., long. 25° E.) ; ? Finsch, J. f. Orn. 1870, p. 373 
(part, ex Pelzeln); ? Hutton, Cat. B. New Zeal. p. 47 (1871); 
Layard, Ibis, 1872, p. 337 (lat. 8°40 / N., long. 34° 31' W.) ; 
Finsch, J. f. O. 1872, p. 255; Buffer, Hist. B. of New Zeal., 
Introd. p. xv (1873); Finsch, J. f. O. 1874, p. 207; Cab. 
et Rchnw. J. f. O. 1876, p. 329 (part., lat. 32° IP N., long. 
59° 41/ E., lat. 33° 26' S., long. 79° 42' E.) ; Gieb. Thes. 
Orn. iii. p. 306 (syn. emend.) (1877). 
