Vol. xxxviii. | 4.0 
tone below, and by the very big conspicuous dark spots at 
the sub-tip of the tail-feathers. 
In addition to this it isa much bigger bird. The average 
wing-measurement of seven specimens of burmanica is only 
47°5 against 53°0 mm., the average of nine Siamese birds. 
The tails average 55 mm. in burmanica and 645 in this new 
form. 
Types. 8. 5.7.15. Bangkok. Herbert Coll. in British 
Museum. 
eo 9. 20.6.15. Samkok. Herbert Coll. in British 
Musenm. 
Hab. Central and South Siam, extreme N.E. of Tenas- 
serim, but not, as far as we know at present, either Siam or 
Tenasserim in the Malay Peninsula, where the rufous 
form P. 2. blanfordi is found. 
Mr. E. Bipwett exhibited an unrecorded egg of the 
Great Auk, the property of Mr. F. R. Rowley, who had 
kindly lent it for exhibition. Blown with a small hole at 
each end, it is in a wonderfully perfect condition. It is 
heavily marked with black on a white ground and has a 
zone at the larger end. 
Mr. Cuartzs Causes sent the following descriptions of 
new subspecies of Attagis :— 
Attagis gayi fitzgeraldi, subsp. nov. 
Adult male. Differs from A. gayi gayi from the typical 
locality in being paler on the upper surface and the vermi- 
culations finer, the throat is buff instead of whitish, the 
breast, abdomen, and under tail-coverts vinous-chestnut 
instead of tawny-ochraceous, the under wing-coverts darker, 
and the wing and tail measurements larger. “Iris dark 
straw-colour ” (P. H. Gosse). 
Total length 270 mm. ; exposed culmen 20 ; wing 190; 
tail 78; tarsus 27. 
- Hab. Horcones Valley, Andes of Argentina. 
