190 ‘ SCIENTIFIC RESULTS OF THE 
1. D. Sandiegensis, Cooper. Plate V, fig. 3-9. 
Doris (Actinocyclus?) Sandiegensis, Cooper, Proc. of the California 
Acad. of Nat. Sciences, ii (1862), 1863, p. 204;1 iii (1863); 1868, p. 58. 
Color corporis e brunneo lutescens, annulis nigris maculatus; vel 
brunneus. 
Habitat. Oceanum Pacificum orient. (San Diego Bay; Santa Bar- 
bara; Sitka Harbor; Puget Sound). 
According to Cooper, numerous specimens of this species were 
found from November to May among grass on mud flats in San Diego 
Bay, at or near low water mark; according to Cooper, it is a very 
“active” species; Cooper later obtainéd two specimens at Santa Bar- * 
bara Island, on rocks at low water. During the expedition to Alaska 
a specimen was taken by Dall in Sitka Harbor, on alge, in August, 
1865, at the depth of six fathoms (another in August, 1873, in Puget 
Sound, by Dr. Kennerly, on algz, at low water). 
Through the kindness of Dall, I have seen the original (rather 
rough) drawings of this species by Cooper; a colored one represents 
the back bright chocolate-brown, with six black rings, of which there 
are two smaller ones between the rhinophoria; the rhinophoria, the 
gill and the foot seem bright-yellowish ; one figure shows five, another 
six branchial leaves. 
The length of the first specimen, sent to me preserved in spirits, 
was about 22.0 mm., the height reaching 9.0 mm., and the breadth 
13.0 mm.; the breadth of the foot reached 10.0 mm., the height of 
the rhinophoria 2.0 mm., the branchial leaves 3.3 mm. The color 
was uniformly brownish-gray ; nearly symmetrically on each side of 
the true back was an annular black spot. 
The form of the rather soft body elongate-oval, not much depressed. 
The head quite concealed between the mantle and the foot; the 
outer mouth had the form of a vertical slit; at each side a short 
finger-shaped tentacle. The margin of the rather large rhinophor- 
holes rather prominent, crenulate; the rhinophoria strong, the club 
1 «Pale brownish-yellow, with large, annular, brown spots, irregularly 
scattered, varying from twelve, to twenty, or entirely brown. Surface 
slightly rough ; sometimes a little tuberculated. Dorsal tentacles conical, 
retractile ; branchiz large, rising in five parts, which become tripinnately 
divided, expanding so as to cover the posterior third of the body like an 
umbrella. Mouth proboscidiform, with two short lateral tentacles. Length, 
3} inches ; breadth, 2} inches; height, } inch.— CoorEr, 1. ¢. 
