APPENDIX. 327 
TROCHITA, Shum. 
42. T. DIEGOANA, Con., Pl. V, fig. 42.—Conical ; volutions three, rounded smooth; body 
whorl ventricose. 
Locality.—Occurs with the preceding. Miocene? 
` CRUCIBULUM, Shum. 
43. c. SPINOSUM, Con., Pl. V, fig. 46, 46a.—Moderately elevated, suboval, armed with nume- 
rous prominent spines in radiating series; spines smaller, and the series more closely arranged 
anteriorly; apex sub-central? prominent acute; shell with concentric wrinkles. 
Calyptrea spinosa ?—Sowerby. 
Locality.—San Diego? Recent on the coast of Peru. 
NASSA, Lam. 
44. N. INTERSTRIATA, Con., Pl. VI, fig. 49.—Ovate-acute ; whorls 51, rounded, cancellated ; 
longitudinal strie nodulous, except towards the base of the body whorl; a deep sulcus behind 
the beak, two upper volutions entire; labrum striated within ; spire conical, longer than the 
aperture. 
Locality.—San Pedro. Recent formation. 
The surface of this shell is roughened by a tubercle on the longitudinal, at each intersection 
of the revolving lines, 
45. N. PEDROANA, Con., Pl. VI, fig. 48.—Subfusiform, smooth ; volutions rounded, spire con- 
ical, longer than the aperture, which is elliptical ; columella very regularly concave. 
Locality.—Occurs with the preceding. Recent formation. 
This small species resembles Nassa lunata, Say, as the preceding approximate N. trivittata, 
Say. This is very remarkable, as the two latter are recent shells of the Atlantic coast, asso- 
ciated with each other, both in the sea and in the Miocene deposits of Virginia and Maryland. 
STREPHONA, Browne. OLIVA, Lam. 
46. s. PEDROANA, Con., Pl. VI, fig. 51.—Small, elliptical ; spire conical, about equal in length 
to the aperture; base of calumella with a prominent fold, 
Locality.—Occurs with the preceding. Recent formation. 
À small abundant species, sometimes water-worn, without any prominent cliaracter, except 
the fold at the base, which is more conspicuous, considering the size of the shell, than is usual 
in the genus. 
LITTORINA, ۰ 
4T. 1. PEDROANA, Con., Pl. VI, fig. 50.—Suboval; spire very short; body whorl abruptly 
rounded above; aperture obliquely subovate. 
Locality. di with the preceding. Recent formation. 
STRAMONITA, Shum. PURPURA, Lam. 
48. s. PETROSA, Con. , Pl. VI, fig. 47 and 47a.—Subglobose; whorls four, subangulated ; body 
whorl with three es rows of distant tubercles, and flattened at the summit. Spire con- 
ica]; penultimate whorl with one series of tubercles. 
ity.—Tulare Valley. [Found with Meretriz Tularana, Con., pl. III, fig. 22 and 22a. 
th specimens are clay casts, but very perfect.—W. P. B.] 
