PANAMIC PROVINCE. 79 
Scarcely any species are common to this province (extending 
from Puget Sound to the peninsula) and the Bay of California, 
which belongs to the Panamic province. The most important 
genera are Chiton, 18 species; Acmeea, 11 species; Fissurella, 
6 species; Haliotis, 6 species; Trochus, 15 species; Purpura, 
9 species. The following list piobably contains some shells 
which should be referred to the Panamic proyince. 
Saxidomus giganteus. 
Venerupis cordieri. 
Petricola mirabilis, 
Fusus Oregonensis. Chiton scrobiculatus, &c. 
Murex Nuttalli. Cleodora exacuta. 
Monoceros unicarinatus. os 
i punctatus. Waldheimia Californica. Mactra, 2. Donax, |. 
Cancellaria urceolata. Discina Evausii. Tellina Bodegensis. 
Trivia Californica. — WP SECla Cees 
Semele decisa. 
Cumingia Californica, 
Sanguinolaria Nuttalli. 
Lutraria Nuttalli. 
Platyodon cancellatus. 
Amphichena Kindermanni, 
Lyonsia, 1. Thracia, 1. 
Pandora, 1. Saxicava, 2. 
Cyathodonta undulata. 
Sphenia Californica. 
Periploma argentaria. 
Anomia pernoides, 
Placunomia cepa. 
Hinnites giganteus. 
Perna, 1. Pinna, 2. 
Mytilus, 1. Pecten, 2. 
Mytilimeria Nuttalli. 
Modiola capax. 
Chama lobata. 
Cardita ventricosa. 
Cardium, 4. 
Lucina, 3. 
Natica herculea, 
»  Lewisii. 
Calyptrea fastigiata. 
Crepidula exuviata. 
“ navicelloides. 
AS solida, &c, 
Imperator Buschii. 
Haliotis Cracherodii. 
ee LU e ns: 
5 corrugata. 
Fissurella crenulata. 
ce cucullata. 
Puncturella, 2 sp. 
Chironia Laperousii. 
Solecardia eburnea. 
Solecurtus subteres. 
Machaera lucida. 
Dentalium politum Venus Californiensis. * maxima, 
Patella, 15 sp. »  callosa. Mya truncata. 
Acmea scabra. Artemis ponderosa. Panopzea generosa, 
» pintadina. Saxidomus Petiti. Pholas Californica. 
Chiton Mertensii. 1 Nuttalli. x»  concamerata, 
XIII. PANAMIC PROVINCE. 
The Western coast of America, from the Gulf of California to 
Payta in Peru, forms one of the largest and most distinct pro- 
vinces. The shells of Mazatlan and the Gulf have been imper- 
fectly catalogued by Menke. ‘The Mazatlan mollusks have 
been examined by Mr. P. P. Carpenter, who enumerates 654 
species. The total number of marine shells known belonging 
to this province is 1,341. Amongst these are included 27 
Chitonidze, 13 Acmeeidee, 18 Fissurellide, 64 Trochoide, 28 
Calyptraeidee, 69 Pyramidellidee, 59 Buccinide, and 90 Muri- 
cide. The gulf of California, together with the adjacent coast 
as far as Mazatlan aud St. Blas, has yielded 768 shelis (502 uni- 
valves and 265 bivalves), of which 439 also occur in the Gulf of 
Panama, while 117 extend into 8. America; 635 species are 
known from the Gulf of Panama; of these, 266 are peculiar te . 
