828 
U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
List of specimens. 
Locality. 
Whence obtained. 
Original 
No. 
Florida coast_ 
1016 
Coast of New York.. 
DAPTION, Stephens. 
Dnption, Steph. Shaw’s Gen. Zool. XIII, 1825, 239. Type Procellaria capensis, L. 
Ch -—Bill short, broad at the base, compressed near the tip, which is curved and acute, but rather weak ; nostrils on the base 
of the culmen, and depressed ; wings rather moderate, first quill longest; tail short and rounded ; tarsi of moderate length and 
rather slender ; anterior toes long and united by a full web; a short spur, rather obtuse, in place of the hind toe. In form quite 
robust. 
This genus is founded on a single species. 
DAPTION CAPENSIS, Stephens. 
The Pintado Petrel; The Cape Pigeon. 
Procellaria capensis, Linn. Syst. Nat. I, 1766, 213.— Lawr. Ann. Lyc. Nat. Hist. N. Y. VI, 1853, 6. 
Daption capensis, Stephens, Shaw’s Gen. Zool. XIII, 1825.— Bon. Cons. Avium, II, 1855, 188. 
Sp. Ch. Upper part and sides of the head, and hind neck plumbeous black ; back, rump, and upper tail coverts white, each 
feather terminating with a plumbeous t black mark, giving a mottled appearance to the upper plumage ; smaller wing coverts 
plumbeous black, tipped with brown ; larger wing coverts white, margined with plumbeous black ; primaries black on the outer 
webs and white on the inner, except near the end where they are dark ash ; secondaries white, with dark tips ; tail white, with 
a broad terminal band of plumbeous black ; lower parts white ; bill black ; tarsi and feet brown ; the toes marked with yellow. 
Length, 15 inches ; wing, 10J ; tail, 4| ; bill, 1§ ; tarsus, 1|. 
Hub. —Off the coast of California. 
One specimen in tlie collection from the southern seas. Specimen in my cabinet from the • 
California coast. 
List of specimens. 
Catal. 
No. 
Locality. 
Whence obtained. 
Original 
No. 
Length. 
Wing. 
9971 
South Pacific........____ 
15. 00 
10.75 
Pacific coast of the United States_ 
George N. Lawrence_...__ 
1017 
TIIALASSIDROMA, Vigors. 
Thalassidroma, Vigors, Zool. Jour. 1825. 
Ch. —Bill shorter than the head, slender and weak, the tip curved and acute, the sides compressed and moderately grooved ; 
nostrils at the base of the culmen, tubular and prominent; wings long and narrow, the second quill longest; tail forked or 
emarginate ; legs slender and very long ; tibia bare for a considerable space ; anterior toes rather short and slender, united by 
an indented web ; a short spur in place of the hind toe. 
