30 EDWARD A. WILSON. 



each a few millimetres in length, except where the shell has been secreted in little warty 

 excrescences, forming in some examples a roughness over the whole of the larger end 

 of the egg, but in others appearing only here and there, collected sometimes at the 

 smaller end, sometimes in the middle, and sometimes being absent altogether. In one 

 or two specimens the shell is secreted irregularly, so that raised streaks or faint ridges 

 appear running down the shell from one end to the other ; the surface is therefore coarse 

 in texture, rough, and carunculated, until weathered, when it presents an unusually 

 smooth and polished appearance with the longitudinal pores particularly noticeable. 



Below is a list, with the measurements and characters of each egg in the series 

 which we obtained, with measurements also of the Drayton egg, and of a series of 

 King Penguins' eggs from the Macquarie Islands for comparison. 



Emperor Pen&uins' Eggs. 



13-] cm. X 8-0 cm. Smooth, bare of chalky covering over the pointed half. Few 



chalky nodules. 

 12 Ml cm. X 8 '2 cm. Very rough, thick, white, chalky covering. Infinite number of 



nodules. Egg-shell itself pale greenish white. 

 11-1.:) cm. X 8 •4.") cm. Many nodules, forming a ring round the widest part of the egg. 



Dirty white, chalky covering thick on the blunt end. 

 11-0 cm. X 7-7 cm. Nodules collected at the sharper end. Chalk covering thin. 

 12-8 cm. X 7'7ycm. Chalky covering all worn off. Sliell surface freely pitted with 

 longitudinal pores a few mm. in length. 

 No. G. 12-3 cm. X 8-3 cm. Many nodules. Thick, chalky covering. Seventeen or eighteen 



longitudinal raised streaks down the length of the shell. 

 No. 7. 12"l.')cm. X 8 -21) cm. Dirty greenish chalk all over. Very few nodules. 

 No. 8. 12 '2 cm. X 8*2 cm. Scattered nodules, few. Chalk uniform, but thicker at the sharper 



end. 

 No. 9. 10-7 cm. X 8-0 cm. The smallest in the series (Fig. 1, PI. VI.). 

 No. in. 12-8 cm. x 8-6 cm. Thick white chalk all over, and multitudes of nodules, all covered 



by the chalk. 

 No. 11. 12-05 cm. x B'l cm. Nodules in a ring round middle part of egg. Chalky concretion 



at each end. 

 No. 12. 11 Ml cm. X 7-a cm. Many nodules, chiefly round pointed end aud middle, in a band. 

 No. 13. 11-9 cm. X 8-2 cm. No nodules. Chalky covering at both ends. 

 No. 14. ll'7.^cm. X 8-4.5 cm. Nodules only at sharp end. Chalky covering at both ends. 



Longitudinal pitting marked. 

 No. 1.5. 13-1 cm. X 8-3 cm. The largest in the series (Fig. 1, PL VII.). 

 No. 16. 12-5 cm. x 8-5 cm. Thick chalky covering, and many nodules (Fig. 2, PI. VI.). 

 No. 17. 12-5 cm. X 8-5 cm. Marked with slightly raised longitudinal strise (Fig. 2, PI. VII.). 

 Drayton Egg. 10-9 cm. X 7 "75 cm. Surface smooth and weatherworn. Longitudinal pitting 

 as in all the weathered eggs. A few small nodules. No remains of chalky covering. 

 Inscribed: ''^ AjJtmodytesf order i. Emperor Penguin. 7G9." 



King Penguins' Eggs. 

 Greatest measurements in length and breadth of twelve eggs from the Macquarie Islands : — 



9-8 X 7-2 cm. 10-2 X 7-0 cm. 10-2 X 7-5 cm. 



9-9 X 7-5 cm. 10-3 x 7-5 cm. 9-9 X 7-3 cm. 



10-4 X 7-3 cm. 10-5 X 7-8 cm. 10-6 X 7-5 cm. 



10-1 X 7*2 cm. !)-6 X 7-2 cm. 9"8 X 7"4cm. 



