10 



83 Omphalitis aureotinctus 



Height and diameter about 3 cm; shell pearly white inside, 

 solid, epidermis gray or nearly black, often nearly white with 

 incrustating algae; whorls banded by a few heavy, rounded, spiral 

 ridges, with wavy crossings; umbilicus large, stained a bright 

 yellow. 



Monterey (?) and San Diego, Cal., to Santa Margarita Island, 

 Baja Cal. Santo Domingo, and Cerros Island, Baja Cal. 



84 Haliotis cracherodii Leach 



Shell 110-125 mm long, 90-100 mm wide, about 40 high; 2-16, 

 usually 5-7 holes 5-12 mm apart and 3-5 in diameter; epidermis 

 dark bluish green or olive, commonly distinguished as the "black 

 abalone;" interior pearly white, with (rarely blue, green, and) 

 rose irridescence; scars of the closed holes show nearly to the 

 apex of the shell, especially plain in perfect polished specimens; 

 epidermis sometimes of a beautiful reddish brown. 



Farallon Island to Turtle bay, and Cape San Lucas, Baja Cal.; 

 at Santa Rosalia, north of Lagoon Head, hundreds of sacks of this 

 species were loaded on the steamer at the time of my visit. Abun- 

 dant at common low water at San Diego, and at Todos Santos 

 bay, Baja Cal.; very variable. 



85 Haliotis splendens Reeve 



Not rare on rocks below tide, from Catalina Island, Cal., to 

 Cedros island, and received from Magdalena bay. The pearl fish- 

 ers at Santo Domingo, Baja Cal., had only two or three at the 

 time of my visit. 



The famous Blue Abalone; brilliant with lustrous blue and 

 green irridescence; holes 4-7; credited with a length of a foot. 



86 Haliotis corrugata Gray 



A large arched shell, very rough, with 3-5 holes, around which 

 are formed prominent tubercles with acute edges; margin crenu- 

 lated. 



Santa Barbara, Cal., to Cerros Island, Baja Cal.; the pearl 

 fishers at Santo Domingo, Baja Cal., had about two dozen fine 

 typical specimens. Apparently occurs in deep water; not common. 



87 Fissurella volcano 



Shell about an inch long, oblong-conical, with red stripes on 

 its sides running down from the small oblong hole at the top, 

 suggests streams of red hot lava issuing from the crater of a vol- 

 cano; the coloring is most brilliant on beach worn specimens. 



Monterey, Cal.; larger and more numerous at Todos Santos 

 bay than in the vicinity of San Diego, where it is also abundant; 

 found dead at Santo Domingo, and Fischer found it at Tres 

 Marias, in the Gulf of Cal. 



88 Fissurella violacea 



Santo Domingo, Baja Cal., one dead. 



89 Lucapina cremilata 



At San Diego, this great species is not rarely found on the 

 rocky ocean beaches, in pools, or among the sea-grass with Ap- 

 lysia Californica. Dr. R. E. C. Stearns records from Monterey, 

 Cal., and I have found it at Todos Santos bay and at Santo Do- 

 mingo, Baja Cal. According to Dall, very young specimens are 

 of a lurid pink. 



