97 
1430 Amauropsis purpurea Dall. 
St. Michael, Norton Sound, Alaska, and north to Point Bar- 
row. 
Shell purplish, with callosities of aperture white, and an ad- 
herent periostracum of olive, more or less streaked with brown, 
sometimes with black stains. Height near 50 mm. 
1431 Amauropsis islandicus Gmel. 
Alaska region and adjacent Polar Sea. 
Shell invariably white, periostracum caducous, height 25 mm. 
1432 Calliostoma turbinum Dall. 
Off Point Conception, to San Diego, Cal., in 100-500 fms, 
Shell small, turbinate, thin, nacre shining with a peculiarly 
coppery lustre, apex white, periphery painted with purple-brown 
flammules, and the spirals more or less articulated with the same 
color; pillar white. 
1433 Calliostoma iridium Dall. 
Off Panama, in 127 fms. 
1434 Gibbula Canfieldi Dall. 
Monterey and Santa Barbara, Cal. Occurs also in the Pleisto- 
cene. Shell pearly, with bronze-yellow pencilings obliquely to 
suture. 
1435 Solariella carlotta Dall. 
Queen Charlotte Islands, in 1,588 fms. 
14386 Ganesa ? Panamensis Dall. 
Type locality:—Gulf of Panama, in 1,020 fms. 
1437 Margarites vorticiferus Dall, Cal ac pr 5:59, t 2, f 4a-b. 
Southern portion of Bering Sea, Akutan Pass, westward to 
Atka Island, Aleutians. 
Shell salmon pink varying in depth with the individual. 
1438 JZeidora flabellum Dall. 
Synonymy:—Emarginula flabellum Dall. 
Type locality: —off Clarion Island, Baja Cal., in 460 fms., sand. 
Shell subtranslucent white. Lon. 12.5, lat. 7.75, alt. 3.25 mm. 
1439 Subemarginula yatesii 
‘‘Shell large, coarse, strong, whitish gray, or pale olive green 
on the fresher portions, especially a very narrow margin about the 
base; sculptured with strong, not dichotomous, radial ribs, of 
which about 20 are primary, between each 2 of which lie from 1 
to 4 secondary riblets, most numerous at the sides of the shell: 
besides these there is a very strong anal fasciole, higher and 
stronger externally than any of the ribs, extending from the apex, 
and ending in front at a notch about 3.5 mm. deep and rounded 
above and behind; the radiating sculpture is sharply and irregu- 
larly imbricated by the rude and profuse incremental sculpture, 
which is too close and irregular to form reticulation; apex small, 
pointed, not much elevated, situated 3-fifths of the way from the 
front to the posterior margin; the fasciole descending from it 
swerves a little to the right of the median line of the shell: inte- 
rior white, the extreme margin pale olive green but almost linear; 
anal furrow deep, extending nearly to the apex, where it is lost 
in a very pale olive deposit of shelly matter; margins crenulated 
by the sculpture; muscular impressions strong, the 2 recurved 
