TAXAMIC PKOTINCE. 



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; Fissurella, 

 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. 

 TriWa Californica. 

 Natica herciilea. 



„ Lewisii. 

 Cal}T)traea fastigiata. 

 Crepidula exuviata. 



„ navieelloides, 

 „ solida, &c. 

 Imperator Buschii. 

 Haliotis Craclierodii. 

 „ fulgens, 

 „ corrugata. 

 Fissui'ella crenula^^a. 

 „ cucuUata, 

 Puncturella, 2 sp. 

 Dentalium poli;um. 

 Patella, 15 sp. 

 Acmaea scabra. 



„ pintaclina. 

 Chiton Merteniii. 



Chiton scrobiculatus, &c. 

 Cleodora exacuta. 



Waldhehnia Californica. 

 Diicina Evausii. 



Anomia pemoides. 

 Placnnomia cepa. 

 Hinnites giganteus. 

 Pei-na, 1. Pinna, 2. 

 MytUus, 1. Pecten, 2. 

 Mytilimeria Xuttalli. 

 Modiola napax. 

 Chama lobata. 

 Cardita ventricosa. 

 Cardium, 4. 

 Lucina, 'i. 

 Chironia Laperousii. 

 Solecaidia ebumea. 

 Venus Calif'omiensis. 



„ callosa. 

 Artemis pontlerosa. 

 Saxidomus Petiti. 

 „ Nuttalli. 



Saxidomns giganteus. 

 Venerupis cordieri. 

 Petricola mirabilis. 

 Mactra, 2. Donax, 1. 

 Tellina Bodegensis. 



„ secta, &c. 

 Semele decisa. 

 Cumingia Californica. 

 Sanguiiiolaria Nuttalli. 

 Lutraria Nuttalh. 

 Platj-odon cancellatus. 

 Ampliichaena Kindcrmanni 

 L3'onsia, 1. Thracia. 1. 

 Pandora, 1. Saxicava, -2. 

 Cyathodonta ur.duiata. 

 Sphenia Californica. 

 Periploma argent aiia. 

 Solecurtus subteres. 

 Machaera lucida. 



„ maxima. 

 Mya truncata. 

 Panopsea generosa. 

 Pholas Californica. 

 „ concamerata. 



XIII. Panamic Peoyince. 



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 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 

 Chitonidoe, 13 Acmseidae, 18 Fissurellidte, 64 Trochoidse, 28 

 Calj^trceidse, 69 Pyramidellidse, 59 Buccinidse, and 90 Muri- 

 cidce. 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 



