* 
Mrs. M. Burton Williamson, to whose Peicatehes this paper is aie 
‘The name being inherently masculine, the usual genitive ending is 
preserved, Dall, US Nt Ma, pr, 15: 202, t 21, f 2-3. 2 Ag 1892. 
Doris SanpreGENsrs J. G. Cooper, Cal ac pr 2: 204. 
Pale brownish yellow, with large annular brown spots veg 
larly scattered, varying from 10-20, or entirely brown. 
slightly rough, sometimes a little tuberculate. 
eee retr: piciet branchie large, bern: in 5 parts which 
the body like an sitrbtstias 
lateral tentacles, Length 34, breadth 24, height $ inch. © a : 
merous among sea-grass on mud flats in San Diego bay, Cal., ae 
November to May. 
Among my notes I find:—‘animal dirty white, }~ inch long; 
mantle with 5-10 or more circles of dark brown irregularly pla 
along the edge of the thick mantle.—Orcutt, number 23, f 
San Diego, identified by Dall as this species. 
Cooper doubtfully placed in the section Aotindeyotinat and 
reported 2 specimens from Santa Barbara, with tentacles con 
acute, and states that the branchial orifice does net agree WV with 
‘peculiar characters of Actironotus.’ Bolinas ne 
AMPHISSA RICOLOR Dall. ' 
‘Shell small, solid, pale with brownish bands and 6 
whorls; nucleus eroded in the specimens; suture distinct, 
pressed, whorls full, with 11-13 narrow rounded ribs — 
dine iat beat sitarsted by diets eieamalut 
in ee ers thin and Bene a color of shell ie 
the spire, the rai ponitinats rib behind it a Tittle eaten ® pila 
der, polished white with little callus; canal wide, chert rec 
outer lip simple, slightly reflected; not lirate inside. _ Long 
* of shell, 14; of aperature, 7.7; maximum diameter of shell, 
Habitat: Dredged by the U.S. Fish Commission at various — 
_ off the coast from Point Sur to San Diego, and in the ‘Santa B 
bara channel in depths varying from 124 fathoms at the Ss th O 
298 fathoms at the north, over a sandy or ras bottom. 4 
s og eee is brownish and Feselables that of a ve 
