PAITAMIC PEOYIXCE. 



79 



Scarcely any species are common to this province (extending 

 from Piiget Sonne! to the peninsula) and the Bay of California, 

 which belongs to the Panamic province. The most important 

 genera are Chiton, 18 species; Acmcea, 11 species; Fissnrclla, 

 6 species; Kaliotis, G species; Trochus, 15 species; Purpnra, 

 9 species. The following list probably contains some shells 

 which should be referred to the Panamic province. 



Fiisus Oregonensis, 

 Murex Nuttalli. 

 Monoceros unicarinatus. 



„ punctatus. 

 Cancellaria urceolata. 

 Trivia Californica. 

 Natica herciilea. 



„ Lewiiii. 

 Calji)trjea fasiigiata. 

 Crepidula exuviata. 

 ,, navicelloides. 

 „ solida, &c. 

 Impfirator Busciiil. 

 Haliotis Craclierodii. 



„ fulgens. 



„ con'iigata. 

 Fissurella crenulata. 

 „ cuciiData. 

 Piincturella, 2 sp. 

 Dcntaliiim poli.um. 

 Patella, 15 sp. 

 Acmaea scabra. 



„ pintudina. 

 Chiton IMeneuiii. 



Chiton scrobiculatus, &e. 

 Cleodora exacuta. 



Waldheimia Californica. 

 Discina Evausii. 



Anemia pemoides. 

 Placunomia ccpa, 

 Hinnites giganteus. 

 Pern a, 1. Pinna, 2. 

 Mytiliis, 1. Pecten, 2. 

 Jlytilimeria Nuttalli. 

 Modiola rapax. 

 Chama lobata. 

 Cardita ventricosa. 

 Cardium, 4. 

 Lucina, 'i. 



Chironia Laperousii. 

 Solecaiciia eburnea. 

 Venus Californiensis. 



„ callo?a. 

 Artemis ponderosa. 

 Saxidomus Petiti. 

 Xuttalli. 



Saxidomus giganteus. 

 Venenipis cordieri. 

 Petricola mirabilis. 

 Mactra, 2. Donax, 1. 

 Tellina Bodegensis. 



„ secta, &c. 

 Semele decisa. 

 Cumingia Californica. 

 Sangiiinolaria Nuttalli. 

 Lutraria Nuttalli. 

 Platyodon cancellatus. 

 Amphichsena Kindermamii. 

 Lyonsia, 1. Thracia, 1. 

 Pandora, 1. Saxicava, 2. 

 Cyathodonta undulata. 

 Sphenia Californica. 

 Periploma argentaiia. 

 Solecm'tus subteres. 

 Macliaera lucida. 



„ maxima. 

 Mya trnncata. 

 Panopsea generosa. 

 Pholas Californica. 

 ,, concamerata. 



XIII. Paxamic Peoyixce. 



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 moUusks havo 

 been examined by Mr. P. P. Carpenter, who enumerates G54 

 species. The total number of marine shells known belonging 

 to this province is 1,341. Amongst these are included 27 

 ChitonidtT^, 13 Acmceidoe, 18 Pissurellida?, G4 Trochoidce, 28 

 Calyptrrieidte, C9 Pyramidellido?, o9 Jjuccinidse, and 90 Muri- 

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

 as far as Mazatlan and St. Bias, hasj'ielded 768 shells (502 uni- 

 valves and 2Go bivalves), of which 439 also occur in the Gulf of 

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

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



