TANAMIC PEOVIlSrCE. 



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; Acmsea, 11 species; Pissurella, 

 6 species; Haliotis, 6 species; Trochus, 15 species; Purpura, 

 9 species. The following list probably contains some shells 

 which should be referred to the Panamic province. 



Fusus Oregonensis. 

 Murex Nuttalli. 

 Monoceros unicarinatus. 



„ punctatus. 

 Cancellaria urceolata. 

 Trivia Californica. 

 Natica herculea. 



„ Lewisii. 

 Calyptrsea fastigiata. 

 Crepidula exuviata. 

 „ navicelloides. 

 „ solida, &c. 

 Imperator Buscliii. 

 Haliotis Cracherodii. 



„ fulgens. 



„ corrugata. 

 Fissm'ella crenulata. 

 „ cucullata. 

 Puncturella, 2 sp. 

 Dentalium politum. 

 Patella, 15 sp. 

 Acmeea scabra. 



„ pintadina. 

 Chiton Mertensii. 



Cliiton scrobiculatus, &c. 

 Cleodora exacuta. 



Waldlieimia Califomica. 

 Discina Evausii. 



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. 



Cliironia Laperousii. 

 Solecardia ebumea. 

 Venus Californiensis. 



„ callosa. 

 Artemis ponderosa. 

 Saxidomus Petiti. 

 „ Nuttalli. 



Saxidomus giganteus. 

 Venerupis cordieri. 

 Petricola mirabilis. 

 Mactra, 2. Donax, 1. 

 Tellina Bodegensis. 



„ secta, &c. 

 Semele decisa. 

 Cumingia Californica. 

 Sanguinolaria Nuttalli. 

 Lutraria Nuttalli. 

 Platyodon cancellatus. 

 Ampliicheena Kindermanni, 

 Lyonsia, 1. Thracia, 1. 

 Pandora, 1. Saxicava, 2. 

 Cyathodonta undulata. 

 Sphenia Californica. 

 Periploma argentaria. 

 Solecurtus subteres. 

 Machaera lucida. 



„ maxima. 

 Mya truncata. 

 Panopaea generosa. 

 Pholas Californica. 

 „ eoncamerata. 



XIII. Pajstamic Peoyince. 



The Western coast of America, from th.e 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 moUusks 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 

 Chitonidse, 13 Acmaeidse, 18 Fissurellidse, 64 Trochoidse, 28 

 Calyptrseidse, 69 Pyramidellidse, 59 Buccinidse, and 90 Muri- 

 cidse. The gulf of California, together with the adjacent coast 

 as far as Mazatlan and St. Bias, has yielded 768 shells (502 uni- 

 valves and 266 bivalves), of which 439 also occur in the Gulf of 

 Panama, while 117 extend into S. America; 635 species are 

 known from the Gulf of Panama ; of these, 266 are peculiar to 



I 



