CATALOGUE OF THE CETACEA. 303 
Physalus? Iwasi. 
P. Iwasi, Gray, 1850, p. 42; 186G, p. 163. 
Balcenoplera arclica, Schlegel, Faun. Jap. Mamm. 26, pi. 30. 
Jajmn. 
Black; sides, white spotted; belly, white. Length, 25 feet. Described from Japanese accounts 
and drawings. No specimens. 
To the above senseless additions to the catalogues may be added the following names, applied 
to Chinese drawings, Japanese clay models, Aleutian wooden carvings, and similar trash, by authors 
of scientific reputation : 
Balcenoptera jmnclulala, B. nigra, B. ccerulescens, B. macidala, Balcena lunulata, and B. Japonica, 
Lacepede, Mem. du Mus., iv, p. 473; from Chinese drawings. 
Balcena agamachschik (!), B. kuliomok, Aleutian Islands, and B. tschiekagluk, Kamchatka, Cham. 
Nov. Act. Curs. 259, Pallas, Zool. Ross, Asiat. i, 289. These are from Aleutian models in wood. 
They should be entirely expunged; but the B. kuliomok, or cullamach, has obtained to some extent 
an entrance into scientific literature, vide Balcena Sieboldii. 
Balcena auslralis, Temm. Faun. Jap., pi. 28-29. Japan. Described from clay model. No 
specimens. 
Genus Balsenoptera, Gray. 
Balcenoptera, Gray, 1866, pp. 114, 186; 18G8, p. 3; 1871, p. 56. 
Balaenoptera velifera. PI. ii, fig. 2. 
B. velifera, Cope, Proc. Phil. Acad. 1869, p. 18; Scammon, 1. c, p. 53, fig. 9, 10. 
Finback, of Scammon ; Oregon Finner. 
Oregon and California. 
Brownish black; belly, white. Described from baleen and Scammon's descriptions. Baleen, 
Mus. S. I. 
Balaenoptera velifera, var. borealis. Outline figure, p. 37. 
Northern Seas and Aleutian Islands. 
The form found in the more northern waters is distinguished, according to Captain Scammon, 
by a larger and higher dorsal fin. I observed many of them, during the summer of 1872, in the 
Shumagin Islands. In some individuals the flukes were black ; in others, white below ; and in a 
few the white extended above over the external points of tbe flukes. Those of Oregon appear to 
have a dorsal intermediate in size between the northern and the small -finned southern forms. 
Balasnoptera Davidsoni. PI. vii, fig. 2. 
B. Davidsoni, Scammon, Proc. Cal. Acad. Sci. iv., p. 269. (Printed in advance, October 
4th, 1872.) 
Admiralty Inlet and Straits of Fuca. 
Small, closely resembling the B. rosh-ala of the North Atlantic. Described from measurements 
and drawings taken from the animal by Captain Scammon. Skull in Mus. S. I. 
A skull and jaws of a small Balcenc^ttera of unknown locality, presented by Mr. Merrill, are in 
the Mus. Cal. Acad. It evidently was an adolescent individual, but a number of facts tend to 
confirm the opinion that it is of this species. The ex-occipitals are wanting, having been removed,' 
probably to clean out the brain cavity. The supra -occipital is quadrate. The two anterior sides 
measure along the suture ten and a half inches ; the posterior sides, six and a half inches ; the 
anterior angle is bluntly rounded. Above, in front, the bone is very slightly impressed ; behind, 
slightly convex; but, on the whole, is flattened. There is no median ridge or groove. The prin- 
cipal feature of the upper aspect of the skull is the wide narial opening ; the very narrow premaxilla 
