rVERODUGPLON Genus Cotymsus. 361. CoLYMBUS GLACIALIS . ; ; : ‘ Vol. V. Pl. XLITL Great Nortaern Diver. One of the finest of our native birds, but does not breed with us. 362. CoLYMBUS ARCTICUS. ; : ; ; ; . : : Vol. V. Pl. XLIV Buack-THROATED Diver. r = s os . ~ ss oO 7 z Sie . [his may be considered a resident species, although it is but sparingly observed at any time. In winter the young are frequent along our southern coasts, while in summer most of the northern lochs of Scotland have each its breeding pair of birds—among other places, Loch-y-vraon and Loch Drome in Ross-shire, part of the fine property of John Fowler, Esq. 363. CoLYMBUS SEPTENTRIONALIS . : : : : ; Vol ve RL Xie Rep-THROATED Diver. Like the last a resident species, breeding in the same parts of the country. Family ALCAD. Formerly Britain could boast of having five species of this remarkable family of northern sea-birds ; but the finest of them, the Great Auk, is now gone from the face of the waters; and if it is still enumerated in the present work, it is because we cherish the recollection of so singular a bird. Genus Aca. 364. ALCA IMPENNIS . : : : ; Vol. Vv. PEXEVE Great AUK. 365. ALCA TORDA ; : : : : : : ; : ; : : Vole Ve Lie NUGVAle Razorsi.u. A common cliff-bird, breeding all round our coasts, and a constant resident on our seas. Genus Urta. 366. Urta TROILE .. : : : : : : : : ; Volk V. Rin XnVInE Common GuILLEMorT. Like the last very numerously dispersed round the whole of the islands and islets of Britain; breeds on the rocks; lays but a single egg. (7) Ve) ba AN ey