United States Exploring Expedition. 13 



insessorial species were found to be confined to a single island. 

 About fifty new species were obtained. 



The field for mammalia afforded by the voyage has been very 

 limited. None of the Pacific islands, including New Zealand, 

 contain any native mammalia, except bats. Much interesting 

 information was however obtained relative to species met with on 

 the continents visited, and a few new species were collected. 



The following is a list of the number of species in the other 

 departments of zoology, as nearly as can now be determined : 

 Fishes, . . . 829 Shells, . . . 2000 



Reptiles, . . 140 Zoophytes, exclusive of 



Crustacea, . . 900 corals, . . 300 



Insects, . . 1500 Corals, . . . 450 



Of these the number of new species is nearly as follows : 

 Fishes, about . . 250 Shells, . . . 250 



Reptiles, . . 40 Zoophytes, exclusive of 



Crustacea, . . 600 corals, . . 200 



Insects, . . 500 Corals, ... 100 



The following catalogue contains the number of species of 

 reptiles and fishes collected at the islands and countries visited : 



Fishes. Reptiles. 



Madeira and Cape Verds, . . 12 . 6 



Rio Janeiro, . . . 104 . 25 



Patagonia and Tierra del Fuego, 14 . 5 



Valparaiso, . . . . 32 . 11 



Peru, .... 56 . 10 



Paumotu Islands and Tahiti, . 87 . 7 



Samoa (or Navigators), . . 64 . 8 



Australia, 30 . 18 



New Zealand, .... 25 . 6 



Tongatabu and Feejees, . . 131 .15 



Sandwich Islands, about . . 100 . 4 



Oregon, about . . . . 60 . 15 



California, " .... 20 . 2 



Sooloo Sea, .... 18 . 8 



Manilla, 32 . 1 



Singapore, . . . . 21 . 9 



Cape of Good Hope, ... 4 



At sea, 9 



Of the six hundred new species of Crustacea, about two hun- 

 dred are oceanic species, of many of which, even the genera or 



