12 
99 Zirphaea crispata 
Circumboreal; England, North Carolina, Straits of Fuca to 
San Diego, Cal., on the Pacific coast; Santo Domingo, Cal. 
Dall, W. H.: Notes on the anatomy of Pholas (Barnea) cos- 
tata Linne, and Ziphaea crispata Linne. Phila. acad. pr 1889: 
274-276. 
100 Solen rosaceus 
Length 6, width 1 cm, about 5 mm thick; very delicate, rose- 
colored, with a polished horn-colored epidermis; shell straight, 
abrupt at one end, rounded at the other. 
Santa Barbara, Cal., to La Paz, Baja Cal. Beautiful and 
large specimens were found at Santo Domingo, Baja Cal., 7 cm 
long. In San Diego bay I once found thousands of these beauti- 
ful shells strewn along the shore; usually seems rather rare. 
101 Tagelus Californicus 
Santa Barbara, Cal., to Gulf of Cal. Abundant at Santo Do- 
mingo, Baja Cal., specimens 12 cm long being found. 
102 Cryptomya Californica 
Straits of Fuca, not rare at San Diego, Cal., and dead speci- 
mens found at Santo Domingo, Baja Cal. 
103 Clidiophora punctata 
Shell oblong and beaked, very flat and compressed, valves 
thin, silvery white, within strongly punctate, about an inch long. 
Straits of Fuca to Gulf of Cal., low water to 30 fathoms; 
Santo Domingo, Baja Cal., dead specimen. 
104 Semele decisa 
Santa Barbara, and San Diego, Cal., Santo Domingo, Baja 
Cal., dead. 
Shell 8 cm in diameter and width, being nearly round, and 
4 cm in thickness; outside coarsely wrinkled and light brown; 
within white, beautifully tinged with rose purple, especially near 
the margin. 
105 Lyonsia Californica 
Vancouver Island. Often washed ashore in great numbers on 
the shore of San Diego bay; found abundant at Santo Domingo, 
Baja Cal. 
106 Periploma argentaria 
oe Pedro, Cal., to Gulf of Cal. Santo Domingo, Baja Cal., 
ead. 
107 Sanguinolaria nuttallii 
Shell 5 by 7 em, 2 thick; thin; epidermis dark brown especially 
near the margin; shell white, showing rays of lilac beneath the 
ee daa hinge ligament just behind the beaks, is very promi- 
nent. ’ 
Santa Barbara, Cal.; Japan. Abundant at San Diego, Cal., and 
at Santo Domingo, Baja Cal. 
108 Tellina rubescens 
Shell rather solid, 4.5 by 2.5 em, about 1 thick; marked with 
strong lines of growth; color inside and out a rather deep rose 
purple and white. 
Santo Domingo, Baja Cal., living, to Cape San Lucas and 
Panama. 
