BROWN AND WHITE PETREL. 25 
Adult—General colour of the upper-surface including the crown of the head, 
back, wings, and tail, sooty-black with whitish philo tips to the feathers on the hinder 
crown, sides of face and nape ; the margins of the greater upper wing-coverts rather 
paler ; inner webs of flight-quills much paler, especially on the basal portion ; sides 
of face and sides of neck paler than the upper-surface and inclining to smoke-brown ; 
the feathers in front of the eye greyish-white with black hair-like tips; throat, 
breast, abdomen, under tail-coverts, and under wing-coverts white ; sides of breast, 
lower flanks and thighs dark dusky-brown ; axillaries and inner under wing-coverts 
pale dusky-brown with dark shaft-lines to the feathers and whitish margins at the 
tips ; under-surface of flight-quills greyish-brown ; lower aspect of tail similar but 
the long white under tail-coverts reaching nearly to the tip of the tail. Bill horn ; 
eyes black; feet cream ; inner toe and inner side of tarsus brown. Total length 
338 mm. ; culmen 35, wing 206, tail 69, tarsus 40. (The sexes are alike.) 
Nestling—Wholly brownish-black with a long thin weak bill of the true Puffinoid 
nature. 
Nest.—At the end of a burrow, which is about two feet long, and about 4.5 
inches in diameter. The chamber is 1 foot 6 inches long, and about 1 foot 8 inches 
high ; in this there is a deepening with a few leaves. 
Egg—Clutch, one ; pure white ; axis 53 mm., diameter 39. 
Distribution and forms—KEast coast of Australia and New Zealand with the 
outlying islands. Four forms have been named: R. r. reinholdi (Mathews) from. 
New Zealand (exact locality unknown); R. r. huttoni (Mathews) with a longer bill 
and wing, culmen 38, wing 226, against culmen 35 mm., wing 213 mm.; and more 
brown on sides of chest, the sides of the body smoky-brown and inner wing white 
feathers with darker shaft-lines, from Snares Islands, south of New Zealand; AR. 7. 
byront Mathews from New South Wales on account of its darker upper coloration 
and smaller size; wing 191 mm.; and R. r. melanotis Mathews from the Kaipara 
Beach, North Island, New Zealand, in its blackish upper coloration and smaller 
size; wing 189 mm., tail 60, tarsus 39, culmen 31; this last named may prove 
synonymous with the first named. 
Mrmo.—We have concluded the following refers to this species, though the 
locality has not yet been recorded. 
Puffinus lherminieri—_ BROWN AND WHITE PETREL. 
(Puffinus therminieri Lesson, Revue Zool., 1839, p. 102: West Indies. Extra-limital.] 
Not figured anywhere. 
Puffinus lherminieri nugax Mathews, Birds Austr., Vol. II., pt. 1, p. 72, May 30th, 1912, ex 
Solander MS. : off Townsville, Queensland. 
Not Procellaria nugax Bonaparte. 
DistrrputTion.—‘ Off Townsville, Queensland.”” No specimen preserved. 
Adult—Above sooty, under-surface snow-white, the bill wholly lead-black, 
the nares a fourth of its length. Very like Nectris munda, but that the body is much 
less, the bill longer and narrower, etc.; eyes black, iris grey. Length 1 foot ; 
expanse of wings 2 feet ; bill 1? inches. 
Genus THYELLCDROMA. 
Thyellodroma Stejneger, Proc. U.S. Nat. Mus., Vol. XI., p. 93, Nov. 8th, 1888. Type (by 
original designation): Puffinus sphenurus Gould = Puffinus chlororhynchus Lesson. 
Zalias Heine und Reichenow, Nomencl. Mus. Hein., p. 362, (pref. Sept.) 1890. Type (by 
subsequent designation, Mathews, List Birds Austr., p. 33, Dec. 1913): P. chlororhynchus 
esson. 
? Microzalias Mathews and Iredale, Ibis, 1915, p. 597, July 2nd. Type (by original designa- 
tion): Pufinus nativitatis Streets. 
