PODICEPS.] AVES NATATORES. 253 



P. cornutus, Temm. Man. d'Orn. torn. 11. p. 721. Sclavonian Grebe, 

 Mont. Orn. Diet. $ Supp. with fig. Horned Grebe, Selb. Illust. 

 vol. ii. p. 397. pi. 74. 



DIMENS. Entire length thirteen inches six lines : length of the bill 

 (from the forehead) ten lines and a half, (from the gape) one inch four 

 lines; of the tarsus one inch eight lines: breadth, wings extended, twenty- 

 two inches. 



DESCRIPT. (Adult.) Forehead, crown, and an ample ruff surrounding 

 the upper part of the neck, deep glossy black; above and behind the eyes 

 two large spreading tufts of feathers of an orange-red colour, resembling 

 horns : nape, and all the upper parts of the body, dusky brown : secondaries 

 white : front of the neck, and breast, bright ferruginous chestnut ; rest 

 of the under parts pure white, with the exception of the flanks, which are 

 tinged with ferruginous : base of the bill, and naked space between it and 

 the eyes, rose-red ; rest of the bill black, the extreme tip red : irides with 

 a double circle ; the inner one yellow ; the outer and broader one bright 

 red: legs externally black, internally gray. (Young, during the first 

 year.) Head, nape, and all the upper parts, dusky ash, deepest on the 

 head, where it approaches to black, with a slight gloss of green ; no indi- 

 cations of a ruff or tufts above the eyes : throat and cheeks pure white ; 

 a narrow line of the same colour extends from behind the ears on each 

 side to the back of the head : middle of the fore part of the neck ash- 

 colour ; sides of the breast, and flanks, tinged with dusky ; rest of the 

 under parts, as well as the secondary quills, pure white : bill dusky, with 

 the sides of the upper, and base of the under, mandible, of a livid flesh- 

 colour, the tip pale brown : the inner circle of the iris white ; the outer 

 one red: legs externally dusky; internally bluish ash. (Egg.) Dirty 

 greenish white : long. diam. one inch nine lines ; trans, diam. one inch 

 three lines. 



More common than the last species, but not very plentiful, at least in 

 the adult state. Found on fresh waters, as well as on the sea-coast. Food, 

 similar to that of the two preceding species. Constructs a floating nest 

 amongst reeds and rushes* and lays three or four eggs. Obs. The second 

 of the two states of plumage described above is that of the Dusky Grebe 

 of Pennant, (P. obscurus, Lath.) which Temminck considers as the young 

 of this species. Not being prepared to prove to the contrary, I have fol- 

 lowed him in this last instance. Yet the correctness of such an opinion 

 may reasonably be called in question on the ground of anatomical differ- 

 ences observed by Mr Yarrell. This last gentleman remarked that in 

 an adult male specimen of the P. cornutus, the stomach was membrano- 

 muscular, and the csecal appendages only an inch and a half in length ; 

 whereas in a specimen of the P. obscurus dissected by him, the stomach 

 was more decidedly muscular, and the csecal appendages nearly five inches 

 in length. These facts appear to indicate a difference of species. 



267- P. auritus, Lath. (Eared Grebe.) Bill shorter 

 than the head, depressed at the base, slightly recurved at 

 the tip, black : iris single : distance from the nostrils to the 

 tip of the bill six lines and a half. 



P. auritus, Temm. Man. d'Orn. torn. n. p. 725. Eared Grebe, 

 Mont. Orn. Diet, fy Supp. with fig. Bew. Brit. Birds, vol. n. 

 p. 157. Selb. Illust. vol. n. p. 399. pi. 74. 



