SKETCHES OF EUROPEAN ORNITHOLOGY. 485 
montagnard, Fr. Of this bird, Mr. Gould, after visiting almost all 
the continental Collections, has met with but one specimen, killed in 
Austria, 1790. He had previously regarded it as a mere variety of 
A. modularis; from which, however, it is readily distinguished by a 
conspicuous stripe of buff over the eye, and the general tawny hue of 
the under-surface. Midification unknown. Fig. one Adult. 
Pate V. Egyptian Goose,—Chenalopex Egyptiaca (probably 
xmverdxs, of the ancient Greeks),—l’Oie d’Egypte, Fr. An Afri- 
can member of the Goose-Family ; occasionally visiting South Eu- 
rope, particularly the island of Sicily; and now domesticated in 
Britain. Sexes alike in plumage; but female smaller, and less dis- 
tinctly coloured, than male ; of which an adult is figured. 
Puate VI. Pallid Thrush,— Turdus pallidus,—le Merle blafard, 
Fr. Native of Asia; widely diffused over Siberia, and occasionally 
visiting central regions of Europe. First described by Pallas. Pro- 
bably resembling in food, habits, and nidification, other members of 
the Family. Fig. Two adults in different states of plumage. 
Pirate VII. Asiatic Nuthatch,—Sitta Asiatica. A specimen, 
from Temminck’s Cabinet ; taken in Russia. Smaller, and lighter in 
general ground of colouring, than S. ewropea. Nidification, and 
habits, unknown. Fig. an adult. 
Prate VIII. Rock Ptarmigan. A specimen from Lord Derby’s 
Collection ; supposed, by some, identical with American, L. rupestris ; 
by others, to be merely the female of Z. mutus in her orange-colour- 
ed spring- and summer- plumage. One figure. 
Pirate IX. Northern Puffinx—Mormon glacialis,—le Macareux 
glacial, Fr, A native of the Arctic circle; occasionally visiting 
north Europe. Distinguished from its congener, M. fratercula, by 
larger, more powerful, and uniformly orange-coloured bill, and 
greater length of fleshy appendages above the eyes. Midification : 
unknown. Fig. an adult male. 
Pirate X. Common Partridge,—Perdia cinerea (olim Tetrao 
perdix),—le Perdrix grise, F'r.,—Pernice, Jt..—Gemeines oder 
graues Feld, Reb- Waldhuhn, G.,—Patrys, D. Fig. adult male 
and female: too large; rather clumsily drawn, and not very softly 
coloured. 
Prate XI. Silky Warbler,—Salicaria— Sylvia—sericea,—le Bec- 
fin soyeux, Fr. A new species ; discovered, by Natterer, in South Eu- 
rope : nearly allied to S. Cetti; and probably constituting, with it, a 
minor division among “les Riverains,” of Temminck. These species 
differ from true Salicaria, in total absence of stiff hairs at base of 
