OOLOGY. 

 The measurements are as follows : — 



Young. — In acUlition to the remarks already given upon the young of 

 this bird by Dr. Kidder in his previous paper, the following facts are 

 of interest: Much of the under mandible is pale bluish, the chin yel- 

 lowish, with a transverse line of demarkation from corner to corner of 

 the mouth, the color being sharply defined against the general blackish 

 hue of the body. The horny tip of the bill is light-colored, as is usual, 

 and the bill otherwise very soft. The aperture of the eye is extremely 

 small ; lids light-colored. The wings show the very tardy development 

 noticed by Dr. K. in the case of the legs, being extremely small and 

 soft. Another specimen, some eight or ten inches long, shows the same 

 yellowish color of the pouch, abruptly defined against the blackness of 

 the throat ; the eyelids being, however, entirely dark. The wings and 

 legs exhibit the same evidence of very tardy development. 



BUPHAG-US SKUA ANTARCTICUS, (LesS.) Coues, (p. 9.) 



The nests are shallow cavities in the long grass, sparingly lined with 

 grass-stems, and always situated in a dry spot. Eggs are only two in 

 number in the four instances observed ; first found November 17. A 

 single egg was found December 20 in a nest robbed December 3. The 

 shape is a very broad ovoid, tapering rapidly to a sharp point. Shell 

 is brittle and of loose texture, being composed of irregularly prismatic 

 bodies set side by side perpendicularly to the surface. Externally it is 

 coarsely granular. Color is dark olive-drab, marked superficially byi 

 irregular blotches of Vandyke-brown. Deeper markings appear as 

 blotches of dark bluish stone-color. The blotches are more plentiful 

 over the butt-end. Those of the same nest agree generally in color, but 

 different clutches show considerable variety of tint. Nos. 134 a and 6, 

 (original number) for example, are generally of a pale olive-gray, and 

 the blotches are scarcely deeper in hue than dirty Indian -yellow. 



