ownish black above, barred with
rusty and below is marbled with brownish gray and white. Its nesting
habits and eggs are very similar to those of the Ancient Murrelet, they
placing their single eggs in holes in the ground or crevices among the
cliffs. Size 2.20 x 1.40. Data.--Chichagof Is., Alaska, June 18, 1898.
Single egg in crevice on face of cliff. Large colony breeding in company
with Ancient Murrelets.

24. KITTLITZ MURRELET. _Brachyramphus brevirostris._

Range.--North Pacific Coast in the Aleutian Islands and north to
Unalaska, breeding on isolated islands throughout its range. This
species is very similar to the Marbled Murrelet, the chief difference
being in the bill which is shorted. They have been found breeding on the
same islands with the preceding species. Their single white egg is laid
in crevices in the cliffs. Size 2.40 x 1.30. Data.--Sanak Is., Alaska,
June 25, 1890. Nest in a hollow under a bunch of rank matted grass. Many
ancient Burrelets breeding on the same Islands. Collector, Capt. Tilson.

25. XANTUS MURRELET. _Brachyramphus hypoleucus._

Range.--Resident along the coast of southern and Lower California.

This bird is blackish above and entirely white below, including the
sides of the head below the eye. The whole of the under surface of the
wing is also white. They breed on the coast islands from Santa Barbara
southward. The single egg is laid at the end of a burrow or in crevices
among the rocks. It is a pale buffy white in color and thickly, but
finely dotted over the whole surface with purplish brown, and with some
larger spots at the larger end. Size 2.05 x 1.40. Data.--Galapagos
Islands, March 2, 1901. No nest. Single egg laid in a crevice in the
rocks. Collector, Rollo H. Beck.

[Illustration 029: Buff.]
[Illustration: White.]
[Illustration: Pale Blue.]
[Illustration: right hand margin.]

Page 28

26. CRAVERI'S MURRELET. _Brachyramphus craveri._

Range.--Both coasts of Lower California, breeding chiefly on the Gulf
side. Craveri Murrelet is very similar to the last except that the under
surfaces of the wings are dusky. Breeds on the islands near Cape St.
Lucas, burrowing in the ground as do most of the others of this species.
They lay a single egg, the ground color of which is buff; they are quite
heavily blotched with brownish. Size 2.00 x 1.40.

27. BLACK GUILLEMOT. _Cepphus grylle._

Range.--Coasts and islands of the North Atlantic, breeding from Maine
northward t