320 | APPENDIX. 
CATALOGUE -—Continued. 
No. | Name. Locality. 
| 
62 catilliformis, (nov. sp.) Con Ocoya or Pose creek 
63 | Cardium ? Te do 
64 | Arca ? do 
65 | Solen ? in 
66 | Dosinia ? do 
7 | Venus ? do 
68 | Cytherea decisa? Con do 
69 | Ostrea San Fernando 
70 | Pecten ? do 1 
71 | Turritella biseriata, (nov. sp.?) Con E a Da nee Nom 
72 | Trochus ? Benicia 
73 | Turritella ? do F 
74 | Buccinum interstriatum ? San Pedro 1 
75 | Anodonta Californiensis. Lea Colorado desert ; 
DESCRIPTIONS OF FOSSIL SHELLS FROM THE EOCENE AND MIOCENE FORMATIONS OF CALIFORNIA. 
I. EOCENE. 
E .CARDIUM, Lin. 
1. C. umwrEUM, Conrad, Pl. II, fig. 1.—Cordate, ventricose subequilateral, with closely 
arranged radiating lines, umbonal slope subcarinated ; posterior submargin with closely arran ged 
smooth striz, fine, but much larger than those of the disk. 
Locality.—Cañada de las Uvas. Allied to C. Nicolleti, Con., but very distinct. 
DOSINIA, Scopoli. 
2. D. ALTA, Con., Pl. II, fig. 2.—Elevated equilateral? posterior side short; disk with fine 
closely arranged concentric lines, becoming large towards the base ; posterior extremity obtuse, 
direct. 
Locality.—Cañada de las Uvas, with the preceding. 
| MERETRIX, Lam. CYTHEREA, Lam. ; 
3. M. UVASANA, Con. Pl. II, fig. 3.—Suboval convex, inequilateral, margins rounded ; beaks 
distant from anterior margin; disk with concentric, rather distant ribs, which were probably 
- M Jaminiform when perfect. 
Locality.—Cañada de las Uvas. EIER. 
There is but one broken valve of this species, in hard sandstone and with the ribs broken off. 
4. M. CALIFORNIANA, Con., Pl. II, fig. 4.—Subcordate, ventricose, inequilateral ; pore 
extremity truncated somewhat obliquely inwards; basil margin nearly straight in the middle ; 
lunule lanceolate ; anterior extremity acutely rounded. 
Locality.—Occurs at the Cañada de las Uvas, with the preceding species. Allied to M. 
Poulsoni, Con. 
CRASSATELLA, Lam. 
5. 0. UVASANA, Con., Pl. II, fig. 5.—Subtriangular, compressed, concentrically suleated above; 
