32 EDWARD A. WILSON. 
APTENODYTES PATAGONICA. 
The King Penguin. 
(Plate VIII.) 
Aptenodytes patachonica, J. R. Forster, Comment. Phys. Soc. R. Sci. Géttingensis, iii. p. 137, Pl. ii.* (1781). 
Aptenodytes patagonica, Miller, Cimelia Physica, Pl. xxiii. (1796); Ogilvie Grant, Cat. B. Brit. Mus. 
EXVi., 1898, p. 627, ibique citata. 
List oF MATERIAL IN THE ‘ Discovery’ COLLECTION. 
No. 132, juv. ?, Nov. 22, 1901. Macquarie Island. In down. See Birds, Plate VIII., 
Fig. 1. 
No. 133, juv. ¢, Nov. 22, 1901. Macquarie Island. In down. 
No. 134, juv. ¢, Nov. 22,1901. Macqaurie Island. Shedding down. 
No. 135, imm. ?, Nov. 22, 1901. Macquarie Island. Moult of down completed. See 
Birds, Plate VIIL., Fig. 2. 
No. 136, ad. g, Nov. 22, 1901. Macquarie Island. See Birds, Plate VIII., Fig. 3. 
No. 137, ad. g, Nov. 22,1901. Macquarie Island. 
No. 138, ad. 9, Nov. 22, 1901. Macquarie Island. 
No. 139, ad. g, Nov. 22,1901. Macquarie Island. Moulting. 
No. 140, ad. g, Nov. 22,1901. Macquarie Island. Moulting. 
The colouring of the soft parts is as follows :— 
Juv. Nos. 182, 138, 184. 
Upper bill, purplish black entirely. 
Lower bill, purplish black with a patch half-an-inch long of pale whitish horn colour on 
each side, about the middle of its length. 
Tris, grey with a brown tint, streaked radially with darker brown. 
Eyelids and skin around the eyes of a dusky purplish hue. 
Feet and claws, black. 
Immature. No. 135. 
Upper bill, bluish black entirely. 
Lower bill, bluish black, shading into a brick-red tinge at the base. 
Tris, brown, with darker radial streaks. 
Feet and claws, black. 
Adult. Nos. 186, 187, 188, 139, 140. 
Upper bill, bluish black entirely. 
Lower bill, bluish black with a conspicuous orange-red plate covering the basal two-thirds 
on each side of the ramus. 
Tris, brown, with darker radial streaks. 
Feet and claws, black. 
The pupil in this bird at all ages is quadrilateral or “ diamond-shaped” when contracted, 
and becomes circular when dilated to its full extent. 
Note oN THE ILLUSTRATIONS. 
Plate VIII. represents the heads of four stages in the growth of this penguin, three of which 
—Figs. 1, 2, 3—are reproduced from sketches made upon the spot of birds that had just been 
killed. Fig. 4 is drawn from a remarkable skin in the collection of the British Museum taken in the 
Snares Islands. As I could not ascertain that such an example had anywhere been previously figured, 
I asked permission to figure it with those of our own collection. This permission Dr. Ray Lankester 
kindly gave me. The skin is probably that of a very old and vigorous male bird, and possesses points 
which are worth more than a passing notice. 
* This plate is lettered Aptenodytes patagonica.—F. J. B. 
