GEOGRAPHICAL DISTRIBUTION OF CRUSTACEA. 1483 



obvious, without farther illustration. The discussion of these subjects 

 would be foreign to the topic before us. 



We close these general remarks, by giving the extreme surface 

 temperatures of the waters, as nearly as ascertained, for some places 

 of prominent importance in marine zoological geography. The ex- 

 tremes in view are the means of the coldest and warmest thirty 

 consecutive days of the year. 



SOUTH AMERICA. 



Venezuela and Surinam, 74°-80°. 



Pernambuco, 74°-83°. 



Bahia, 74°-83°. 



Rio Janeiro, 68£°-78°. 



Buenos Ayres, 50°-64*°. 



Rio Negro, 46°-60°. 



Fuegia, 36°-56°. 



Falklands, 37°-50°. 



Chiloe, 48°-56J° 



Valdivia, 50°-63°. 



Conception, 52°?-60°? 



Valparaiso, 52°-62°. 



Copiapo, 56 J° (July)-68° ? 



Iquique, 58° (July)-69° ? 



Callao, 57*°-74°. 



Payta, 60°-74° ? 



Guayaquil, 69°-81°. 



Gallapagos, 62°-80°. 



NORTH AMERICA. 



Panama, 74°-85° ? 

 San Francisco, 51°-68° ? 

 Monterey, 54°-70°? 

 Acapulco 82 *°-84° (March). 

 Columbia River, 46°-60°? 

 Puget's Sound, 42° ?-57°. 

 South of Newfoundland, 35°-63°. 

 Massachusetts Bay, 37°-64°. 

 Cape Henry, 46°-80°. 

 Off Charleston, 64°-81°. 

 Key West, 72°-85°. 

 Yucatan, 71°-83°. 

 Cuba, 74°-84°. 



GREAT BRITAIN AND EUROPE. 



Shetlands, 36°-56°? 



Scotland, west and north, 39°-58°. 



Irish Sea, 45°-63°. 



English Channel, 46°-62°. 



Cape Finisterre, 50°-66°. 



Near Gibraltar, 58°-77°. 



Azores, 60°-73°. 



Madeira, 62°-75°. 



Canaries, 64°-75°. 



Cape Verdes, 70°-82°. 



AFRICA. 



Sierra Leone, 78°-85°. 

 Ascension, 72°-78°. 

 St. Helena, 68°-74°. 

 Table Bay, 54°-68°. 

 Port Natal, 72°-73° (May). 



INDIAN OCEAN. 



South end of Madagascar, 69°-80°. 



Mauritius, 72°-83°. 

 Entrance of Red Sea, 76°-88°. 

 Keeling Island, 78°-83° (April). 

 Singapore, 74°-84°. 

 Balabac, 77°-85°. 

 Manilla, 79°-85°. 

 North Luzon, 74°-84°. 



PACIFIC OCEAN. 



Ladrones, 79°-86°. 

 Salomon Islands, 77°-85°. 



