Genus-P U F F I N U S . 
PuEFiNus Cuvier, Regne Anim., Vol. I., p. 516, 1816 . . 
Nectris^ Kuhl, Beitr. Vergl. Anat., p. 146, 1820 . . 
(Also misspelt Nestris and Nectrix.) 
Thyellas'\ Gloger in Froriep’s Notizen, Vol. XVI., p. 279, 
1827. (Substitute name for Pufflnus Cuvier.) 
Bhipornis Billberg, Syn. Faun. Scand., Vol. I., tab. A, 1828 ; 
c/. Richmond, Proc. U.S. Nat. Mus., p. 639, 1908 
(New name for Puffinus.) 
Cymotomus MacGillivray, Man. Brit. Ornith., Vol. II., p. 13, 
in table, 1842, but Puffinus is used in text 
Ardenna Reichenbach, Nat. Syst. Vog., p. iv., 1852 
TJiyellodroma Stejneger, Proc. U.S. Nat. Mus., Vol. XL, p. 93, 
1^^^$^^ .. .. .. .. .. .. .. .. 
Zalias Heine, Nomencl. Mus. Hein. Ornith., p. 362, 1890 
(Substitute name for Thiellus.) 
Medium-sized Petrels with long slender bills and long pointed wings. 
Tarsus laterally compressed, the anterior edge somewhat sharp. Bill rather 
longer than the head, slender, strongly hooked in front, tip sharp. Nasal tube 
flattened, both apertures separated and visible from above, directed forwards 
and slightly upwards. Number of rectrices twelve. Tail cuneate or rounded at 
the end. Wings long and pointed, first and second primary longest and equal, 
or the first longest. Over twenty species known. 
I have stated that I accept the four families used in the Monograph of the 
Petrels, but would point out that the Family Procellariidce of the Monograph 
is here called Family Hydrobatidce, and the Family Puffnidce of the Monograph 
now becomes the Family Procellariidce. 
* It may be of interest to note that Nectris, introduced as above by Kuhl, as being a genus pressed in MS. 
by Forster, was diagnosed by Solander, and its members were the species N. fvliginosa (=Puffinus griseus), 
N. mtmda {—Puffinus assimilis munda), N. nugax {= Puffinus Iherminieri nugax), and N.. carbonaria { = Puffmus 
cameipes carhonarius). It is also curious to find that in a later MS., Solander had transferred it to an altogether 
different genus, or, perhaps, he used it wrongly through inadvertence. 
t This name is also spelt : — 
Thiellus Gray, List. Gen. Birds, p. 78, 1840. 
Thyello Gloger, Hand. Hilsb. Naturg., p. 464, 1842. 
Thyellus Reiohenb., Av. Syst. Nat., p. iv., 1852. 
Thiellas Gray, Handl. Gen. Spec. Birds B.M., Vol. III., p. 102, 1871. 
Theillus Ridgway, Man. North Amer. Birds, 2nd ed., p. 62, 1896. 
Type P. puffinus. 
Type P. puffinus. 
Type P. puffinus. 
Type P. puffinus. 
Type P. puffinus. 
Type P. gravis. 
Type P. pacificus. 
45 
