﻿GEOLOGY AND PALEONTOLOGY OF THE CANAL ZONE. 225 



in the ^^liocene. It is not Pliocene, according to our present knowledge 

 of Pliocene coral faunas. 



Pleistocene. 



Only the names of the Pleistocene species considered in this paper 

 are given in the following lists : 



Pleistocene corals from Mount Hope and Colon, Canal Zone. 



Oculina diffusa Lamarck. 



varicosa Le Sueur. 

 Eusmilia fastigiata (Pallas ) . 



Astrangia (Pli'gllangia) americana M. Edwards and Haime.^ 

 Cladocora arhuscula Le Sueur. 

 Solenastrea hournoni Milne Edwards and Haime. 

 Facia fragum (Esper). 

 Maeandra areolata (Linnaeus). 

 Manidna gyrosa (Ellis and Solander). 

 Agaricia agaricites (Linnaeus). 



var. purpurea Le Sueur. 

 pusilla Verrill. 

 Siderastrea radians (Pallas). 



siderea (Ellis and Solander). 

 Acropora muricata (Linnaeus)' 



palmata (Lamarck) at Colon. 

 Porites furcata Lamarck. 



astreoides Lamarck. 

 Millepora alcicornis Linnaeus. 



It will be remarked in passing that the coral fauna at Mount 

 Hope is a typical inner-flat coral fauna. 



Pleistocene specimens were obtained at Monkey Point and Limon, 

 Costa Rica. The list is as follows: 



Pleistocene corals from Monkey Point and Limon, Costa Rica. 



Name. 



Monkey 

 Point. 



Eusmilia fastigiata ( Palias) X 



Maea ndra clivosa (Ellis and Solander) X 



strigosa (Dana) X 



Manicina gyrosa (Ellis and Solander) 



Agaricia agaricites var. crassa Verrill 



Siderastrea siderea (Eliis and Solander) j X 



Acropora muricata (Linnaeus) ' X 



palmata Lamarck i X 



Porites furcata Lamarck 



Limon 

 Moin Hill 



The corals from Monkey Point represent a seaward-facing reef; 

 while those from Moin HiU are more characteristic of inner-flat 

 conditions. 



1 Names added in the proof and not entered in the table of species, pp. 228-237., or the systematic 

 account of the faunas. 



