BIRDS OF NEW ZEALAND NOT FIGURED BY BULLER, 
broken. On June 15th, Padre Schmitz himself visited the spot, after a toilsome 
ascent, but no birds were to be found and he came to the conclusion that each 
pair had two burrows, one of which was occupied by the male and the other 
by the female. A careful analysis of the plants used as nesting material will 
be found in the Ornitholog. Jahrbuch, XVTI. (1906), p. 203. 
Eggs. Only three eggs of this species have been taken. All are white, 
entirely devoid of markings. No. 1 (1903) measured 59x 42 mm. No. 2 (1905) 
only 52.5x40.5 mm., while No. 3 (of 1906) was 55.5x41.2 nun. and weighed 
2.45 grammes. The grain is fine, -with a few' chalky excrescences. Average 
size of the three known eggs, 55.6x41.2 nun. 
Breeding-season. From the above details it is evident that the normal 
breeding-season on the Desertas is early in June. 
Owing to the inaccessibility of its breeding-sites, which are apparently 
on grassy slopes on the face of steep cliffs, sometimes between 3,000 and 4,500 ft. 
above the sea, it is quite possible that other colonies still exist in the mountains 
of Madeira. Two young birds w T ere obtained as late as Jiffy 14th, 1909, from 
Curral das Freiras. Of the known eggs, one was unfortunately broken, the 
second, somewhat damaged, is in my own collection, v'hile the third was 
retained by Padre Schmitz, who afterwards went to St. Paulus Hospiz., Jerusalem. 
For literature, see the articles by Padre E. Schmitz in the Omith. Jahrbuch 
for 1899, p. 44 ; 1905, p. 219 ; 1906, pp. 25, 199, etc. 
Thalassarche chlororhynchos. YELLOW-NOSED MOLLYMAWK. 
Thai.assooeron chlokohynchus Mathews, Birds Austr., Vol. II., pt. 3, p. 281, pi. 98, Sept. 20th, 
1912. 
Nest. Like that of Diomedea exulans, but smaller. A cone-shaped structure composed of earth 
and grass cemented together. About 10 inches high by 14 inches diameter. 
Eggs. Clutch one. White, with a cap of fine speckles of brownish-red and a few blotches round 
the larger end; a number of dark red-brown spots at the smaller end sometimes, at others 
large spots distributed over the entire surface. Dimensions of one egg in writer’s collection 
96 mm. by 61.5. Average 97.4 by 61.0. 
Breeding-season. September 20th to March. [Nests in August; young birds leave the nest in 
April.] Nightingale Island. 
Eggs. Clutch one. There are six eggs in the British Museum from the 
Shackleton-Rowett Expedition which w r ere obtained through the inhabitants 
from the colony on Nightingale Island in the Tristan da Cunlia Group. 
In colour they range from white, entirely devoid of markings, to white 
with brown spots and streaks freely distributed over the surface, but in most 
cases the markings consist of a few r reddish-brown spots, chiefly at the big end. 
Measurements: 99 by 58.1 mm.; 101 by 58 ; 101.1 by 65.4; 94.5 by 60; 
95 by 61.8 ; 97.1 by 64. 
160 
