322 Unwwersity of California Publications in Zoology [Vou.14 
Lacuna variegata Carpenter 
Lacuna variegata Carpenter (1863), p. 656; (1864b), p. 428; Tryon (1887b), 
p. 266, pl. 50, fig. 58. 
Description.—Tryon (1887) describes this species as follows: 
“‘Thin, expanded in front, periphery rounded or obtusely augulated, smooth, 
polished, fulvous, irregularly strigate with chestnut, with frequently a peri- 
pheral band of white spots, and sometimes another below the suture.’’ 
Height, 1 to 3 mm. 
Occurrence —At stations D 5711 (2), D 5740 (7), Presidio (19)*, 
Bonita Point (52). 
This species has not hitherto been recorded from the vicinity of 
San Francisco. It is restricted in the Survey collections to the middle 
division of the bay. Living specimens were very abundant at the shore 
station on both shores of the Golden Gate and at a single dredging 
station at a depth of 814 fathoms from a bottom of sand and shells. 
Range—Vaneouver Island, B. C., to San Diego, California 
(Tryon). 
CAPULIDAE 
Hipponix Defrance* 
Hipponix antiquatus Linnaeus 
Hipponix antiquatus Linneaus (1766-1768), p. 1259. 
Hipponysx antiquatus, Tryon (18866), p. 134, pl. 40, figs. 93-99. 
Amalthea antiquatus, Blankinship and Keeler (1892), p. 153. 
Description.—This species was defined by Tryon as follows: 
““White, apex posterior, concentrically rudely, closely laminated, more or 
less distinctly radiately striated; epidermis pilose.’’ 
This form was listed from the Farallon Islands by Blankinship 
and Keeler. Not found among the Survey collections. 
Range.—Farallon Islands to Lower California (Orcutt). 
Crepidula Lamarek 
Crepidula convexa Say 
Plate 35, figures 5 and 6 
Crepidula convexa Say (1822), p. 227; Tryon (18866), p. 125, pl. 36, fig. 
10; Sumner, Osborn and Cole Davis (1913), p. 722, chart 184. 
Crepidula convexa Say var. glauca Say, Stearns (1899a), p. 81. 
Description.—Tryon (1886) described this species as follows: 
“Convex, with somewhat trigonal outline, high back and obliquely beaked 
apex; whitish or glaucous radiately lined with chestnut spots, with sometimes 
larger nebulous chestnut-purple markings.’’ 
Length, 3 to 12 mm. 
*For change in the spelling of the genus see Dall (1915b, p. 104). 
