340 Verrill, Notes on Radiata. 



Bradley there is a species of EripJda* from Panama that appears to 

 be undistinguishable from specimens collected at Aspinwall, but many 

 allied species, which are clearly distinct, occur on the opposite coasts. 



Of Fishes, Prof Theodore Gillf and Mr. F. W. Putnam both admit 

 one species, at least, that appears to be common to both coasts, or in 

 which no characters have has yet been found by which to separate 

 them. The Fishes as a rule are nearly allied and many analogous or 

 representative species occur.;]; 



The Polyps, as we have shown in a former paper,§ are entirely dis- 

 tinct, many of the genera and families being peculiar to each coast. 

 The Panamian Fauna includes Pavonia, Pocillipora, Ulangia, Coen- 

 opsammia, genera which are peculiar to the Pacific and Indian 

 Oceans, while a few of the peculiarly American or Atlantic genera 

 are represented by analogous species, as Renilla, Phyllangia, etc., 

 but most of the characteristic West Indian genera and families are 

 entirely absent. Several peculiar genera also occur, as Stylatula and 

 Stephanaria.\ The genera J/iw/cea, Gorgonia {Rhipidogorgia)*^ As- 

 trangia, are represented by more species in the Panamian Fauna than 

 elsewhere, but have analogous species in the Caribbean Fauna. 



In the following list all the known Echinoderms of the Atlantic 

 and Pacific Tropical American coasts are placed side by side, in order 

 to show the similarity of the two faunae, as well as their remarkable 

 distinctness. When special localities are not given for a Caribbean 

 species, it is to be regarded as inliabiting the West Indian Islands, 

 most frequently the Antilles. A mark of exclamation (!) has been 

 added after the names of those species that I have personally studied, 

 as well as after localities from which I have had specimens for exami- 

 nation. For the Panamian species I have in most cases omitted spe- 

 cial localities, because they have been given in the preceding lists, 

 but have added remarks upon their stations, etc., derived from the notes 

 of Mr. Bradley. (Localities introduced in the Reprint are in italics.) 



# This proves to be distinct. It is the Eriphia squamata St. E. gonagra has not 

 beea confirmed from Panama,— Eeprlnt. 



f Proceeilings Philadelphia Academy Nat. Sciences, vol. xiv, p. 249, 1862. (Brachy- 

 rhintis ereplus Gill). 



:j: Dr. Gignther regards 78 out of 303 species of Central American fishes as identical 

 on the opposite coasts. Of these 173 are truly marine species with 57 identical, — 

 flepi-int. 



§ Proceedings Boston Soc. Nat. History, x, p. 323, 1866. 



11 This name is proposed instead of Siephanocora, which was previously used by 

 Ehrenberg in 1834 for a genus of Oculinidce. 



■^ We have since ascertained that these species are generically distinct from the West 

 Igdian '' RMpidogorgiaJlab§llum" and belong to Leptogorgia and Eugorgia, — Reprint. 



