924 Stimpson on the Crustacea and Echinodermata 
ticularly well represented on the Northwest Coast. Of the 
Ophiuride but two species are here known to exist, neither 
of which can be now specifically indicated, as the speci- 
mens are not at hand. One is a small Ophiolepis, dredged 
by me near San Francisco, and the other an Astrophyton 
taken in Puget Sound by the captain of a coasting vessel, 
in whose hands it was seen and reported to me by Dr. 
Cooper. 
HOLOTHURIAD./E. 
HOLOTHURIA CALIFORNICA. Stimpson, n. s. 
much elongated, of nearly the same thickness 
throughout; below, flattened and thickly covered with 
stout sucker-bearing feet not arranged in rows. Dorsal 
surface with about forty large conical cutaneous processes 
(or false feet) sparingly scattered ; between which there are 
numerous small cirriform feet, also diskless. Tentacula 
twenty, short, peltate, with broad disks. Color, reddish- 
brown above; below, lighter. Length, 12 ft.; thickness, 
1} inches. 
Taken in Tomales Bay by Mr. Samuels. 
HOLOTHURIA SITCHENSIS. Brandt. 
Diploperideris Sitchzensis, Brannt; Prod. desc. anim. Mertens., 59. 
Hab. Sitka, (Mertens.) 
ASPIDOCHIR MERTENSII. Brandt. 
Aspidochir Mertensii, BRANDT; Prod. desc. anim. Mertens., 46. 
* 
Hab. Sitka, (Mertens.) 
PENTACTA FRONDOSA. Jeg. 
Pentacta frondosa, Jza. Ayres; Proc. Cal. Acad. Nat. Sci. i. 68. 
The small Pentacte, found in the vicinity of San Fran- 
cisco, are referred by Dr. Ayres to this species. 
