322 
APPENDIX. 
Locality. —Occurs with the preceding, in Canada de las Uvas. 
This species is allied to T. obruta , Conrad, {T. lineata, Lea.,) hut that Claiborne shell differs 
in having fewer revolving lines, and in being indented at the suture. 
VOLUTATITHES, Swains. 
13. v. caleforniana, Con., PI. II, fig. 9.—Resembles V. Sayana, Con,, hut smaller, having 
numeraus rounded tubercles instead of the comparatively few spiniform ones of the latter. The 
tubercles are somewhat oblique ; base with rather distant impressed lines. 
Locality. —Canada de las Uvas, with the preceding. 
BUSYCON? 
14. b. ? blakei, Con. , PI. II, fig. 13.—Fusiform, body whorl bicarinated; shoulder pro¬ 
foundly tuberculated; tubercles acute, transversely compressed; lower angle distant, entire. 
Surface covered with rather fine unequal or alternated wrinkled lines ; upper side of the whorls 
flattened and sloping ; whorls of the spire angulated and tuberculated in the middle. 
Locality. —Canada de las Uvas, with the preceding. 
The beak of this shell being broken, its form and length are uncertain, and the aperture being 
concealed in the rock, the generic character can only be inferred from the contour of the shell. 
This corresponds with Busycon, except in the biangular form of the body whorl, in which 
respect it differs from any undoubted species that I have seen. 
CLAVATULA? Swains. 
15. c. ? CALIPORNICA, Con., PI. II, fig. 11.—Fusiform ; spire conical, volutions rounded, some¬ 
what flattened above ; body whorl ventricose; beak short and narrow. 
Locality. —Canada de las Uvas, with the preceding. Allied to C. proruta, Con., of the Clai¬ 
borne Eocene, but proportionably narrower. 
II. FOSSILS OF THE MIOCENE AND RECENT FORMATIONS OF CALIFORNIA. 
CARDIUM, Lin. 
16. c. moDestum, Con., PI. Ill, fig. 15.—Very small; ribs about 22, narrow; concentric 
wrinkled lines on the disk; posterior margin direct, truncated; umbonal slope angular; liga¬ 
ment margin parallel with the basal, and forming nearly a right angle with the posterior 
margin. 
Locality. —San Diego Mission. 
NUCULA, Lam. 
17. n. decisa. Con., PI. Ill, fig 19.—Suboval or sub-rhomboidal, posterior margin obliquely 
truncated ; disk with devaricating striae. 
Locality. —San Diego, with the preceding. 
This species resembles, in its divaricating striae, N. divaricata, of the Oregon Miocene; but 
the lines are proportionally larger, and the shell is smaller and different in outline. 
CORBULA. 
18. c. diegoana. Con., PI. Ill, fig. 16.—Triangular, ventricose, inequilateral, extremities 
subangulated; anterior margin very oblique, rectilinear ; posterior margin forming with the 
