11 
90 Acmaea patina 
Santo Domingo, Baja Cal. Aleutian Islands to Mazatlan. 
91 Acmaea spectrum 
An abundant species, very variable in form at San Diego, and 
at Todos Santos bay; Cape Mendocino, Cal., Santo Domingo, Baja 
Cal., small. 
92 Lottia gigantea 
Owl-suell; outside wavy, rough, olivaceous to light brown, or 
mottlea with white and black; average height about 2 cm, length 
of the largest specimen seen, 10 cm; margin of shell within of a 
rich chocolate, center white, decorated with a lighter brown, 
forming a figure greatly resembling an owl in many examples. 
Dr. R. E. GC. Stearns records from Monterey; abundant at San 
Diego and Todos Santos bay, and Santo Domingo, Baja Cal. 
93 Cylichna inculta 
Abundant on the sandy shores of San Diego bay; Santo Do- 
mingo, Baja Cal. 
94 Bulla nebulosa . 
Santa Barbara, Cal., plentiful on muddy flats of San Diego 
bay, Cal., Santo Domingo, Baja Cal., to Gulf of Cal. 
The Clouded bubble-shell is a beautiful species, attaining a 
length of 6 cm, and a diameter of 4; the epidermis of a chocolate 
brown, when worn off leaves a thin polished mottled shell. 
95 Haminea vesicula 
Length 20, diameter 15 mm; shell very thin and delicate; 
eolor white or pale green, covered in life with a thin epidermis of 
a light golden brown, sometimes a deeper shade. 
Santa Cruz, Cal., to Cape San Lucas. A beautiful pink form 
observed at La Playa, San Diego; I have seen tens of thousands 
at a time on the shores of San Diego bay; at San Quintin bay I 
have seen it equally abundant, of a larger size and deeper color- 
iag, specimens an inch long being common. Abundant at Santo 
Domingo, Baja Cal. 
96 Haminea virescens 
In crevices of rocks and interior of rock pools, abundant, 
Santa Barbara, Cal., south to Santo Domingo, Baja Cal. 
Shell of a delicate sea-green color, as long as H. vesicula but 
of a smaller diameter. 
97 Melampus olivaceus 
Obconic; spire short, suture indistinct; whorls 7-9, obtusely 
angulated on the body below the suture; aperture long and nar- 
row, lip covered with sharp laminae within, parietal wall with 
from 1-3 small revolving laminae; there is also a stout fold on 
the columella; epidermis olivaceus, below which the color is white 
with patches or revolving lines of red; length 13, diameter 8 mm. 
Salinas river, Cal., to Gulf of Cal. Abundant in salt marshes 
rt San Diego; and at Santo Domingo, Baja Cal., and reported from 
azatlan. 
98 Pedipes unisulcatus 
Found living in abundance at San Diego, Cal., with Trunca- 
tella Stimpsonii, and at Todos Santos bay and Santo Domingo, 
Baja Cal.; San Pedro, Cal., to Gulf of Cal. 
