14 
121 Cardium procerum 
Santa Margarita bay, Baja Cal., to Peru. Santo Domingo. 
122 lLiocardium elatum 
Formerly not rare, below low-water mark, on the muddy flats 
of San Diego bay and False bay, and at Todos Santos bay; Santo 
Domingo, Baja Cal., and in the Gulf of Cal. 
123 Liocardium substriatum 
Monterey, Cal., to Santo Domingo, Baja Cal., and to South 
America? 
124 Chama exogyra 
Bodega bay, Cal., to Santo Domingo, Baja Cal., and the Gulf 
of Cal. Mazatlan? Abundant on our rocky beeches. 
125 Arca Multicostata 
A large edible clam, rarely found at Catalina Island and at 
San Pedro, Cal., abundant at Santo Domingo, Baja Cal., south to 
Central America. 
126 Mytilus Californianus 
“This species can easily be distinguished by the conspicuous 
ribs, which are never wholly absent, particularly on the newest 
parts of the shell. The beaks of old specimens are apt to be much 
eroded, but the growing edge is protected by a glossy epidermis. 
The general color of the shell is purple, though the thicker parts 
of it are white, and sometimes there are streaks of brown, which 
harmonize remarkably well with the purple. Occasionally a very 
large and perfect specimen is polished on a lapidary’s wheel, and 
the result is remarkably pretty. But far more often we see na- 
ture’s method of bringing out the colors. If you find a little 
beach near a mussel ledge you will notice that the sand contains 
unnumbered bits of blue and white and brown, all bright and 
polished and forming the most lovely bed of gaily colored gravel. 
If you examine the pieces you will find that most of them are 
nothing but broken mussel shell, and you will admire the bright 
colors which blend so perfectly. Ard while speaking of colors, 
let me ask you to observe the combinations all along the rim of 
the ocean. What soft tints of olive green in the sea-weeds, en- 
livened by the brilliant red of a star-fish or the bright emerald of 
a frill of Ulva! How beautifully they harmonize with the gray 
of the rocks and the blue of the sea and sky! What fertile sug- 
gestions for an artist who is seeking new patterns for a fabric 
or a carpet!’’—Josiah Keep. 
Queen Charlotte Island, British Columbia, to Santo Domingo, 
Baja Cal., abundant at San Diego. The fiesh of this mussel is 
bright orange, and is most excellent when pickled. 
127 Modiola capax 
' Puget Sound, Washington, to Peru. Abundant in some locali- 
ties near San Diego, and found at Santo Domingo, Baja Cal.; the 
shell, denuded of its epidermis, often appears of a brick red color; 
by some it is considered identical with M. modiolus, of Linnaeus. 
128 Septifer bifurcatus 
Abundant at San Diego, Cal., south to Santo Domingo, Baja 
Cal. Farallon Islands.—Cooper. 
129 Pinna lanceolata 
Santo Domingo, Baja Cal., in the kitchen middens. 
