26 THE NAUTILUS. 
extreme low tide mark and the other two were dredged in 40 
fathoms. 
Lamellaria stearnst Dall. Two living specimens taken from 
among Velutina cryptospira. 
Acmaea persona Esch. Acmaea pelta Esch. Acmaea patina 
Esch. Abundant on rocks, the first being found in somewhat 
more exposed positions than the other two. 
Acmaea instabilis Gld. Three living specimens were taken on 
stems of holdfast kelp at extreme low water line. One dead 
specimen also found, as well as a few fragments. 
Lepeta concentrica Midd. Dredged rarely. 
Molleria quadrae Dall. Two specimens dredged. 
Leptothyra carpenteri Pils. Rather common on rocks. 
Calliostoma costatum Mart. Calliostoma annulatum Mart. 
Calliostoma variegatum Cpr. The first was common on rocks 
near low water line, the second rather common from low water 
mark down to 20 fathoms, and the third was much legs plentiful 
and taken only with the dredge in from 15-40 fathoms. 
Margarites pupillus Gld. Margarites helicinus Fabr. Marga- 
rites succinctus Cpr. Margarites laevior Jeff. All rather common 
about low water mark. Over 900 of the latter species were 
taken from the craw of a surf duck ( Oidemia perspicillata). 
Tegula pulligo Mart. Fairly common along extreme low tide 
line. 
Solariella peramabilis Cpr. Abundant in from 15-50 fathoms. 
Some specimens taken were very large, measuring over twenty 
millimeters in height. 
Solariella cidaris A. Ad. Fairly common in from 30-50 
fathoms. 
Solariella obscura Couth. Seven specimens dredged in about 
50 fathoms. 
Halistylus pupoides Dall. Three specimens dredged. 
Haliotis kamtchatkana Dall. Common at low water mark. 
Puncturella multistriata Dall. Puneturella cucullata Gld. 
Puncturella galeata Gld. Puncturella cooperi Cpr. All four of 
these species were dredged in from 15-50 fathoms. Culcullata 
was also taken rarely at extreme low tide mark. Multistriata 
and galeata were rather rare. 
