SHORE FISHES OF GALAPAGOS ISLANDS 34! 



Only 4 of these mainland forms are South American. Hence, 

 one set of Central American species populates the Revillagigedo 

 Islands and another set the Galapagos Islands, the 2 sets inter- 

 mingling along the mainland. The fish-faunas of the different 

 islands of the Galapagos Archipelago differ greatly in the num- 

 ber of species and the relative number of individuals of the same 

 species found at each, and in many cases different parts of the 

 same island show differences of an equal degree. 



This paper is the first report on the Cocos and Clipperton 

 shore fishes, and the majority of the Galapagos species listed 

 have not heretofore been recorded from these islands. Many 

 imperfectly known species are redescribed, and numerous color 

 notes are given taken from freshly captured specimens. Two 

 species are described as new. Twenty-three other new species 

 were described in Paper XV of the Hopkins-Stanford Gala- 

 pagos series. 1 This paper, though in part compiled, is based 

 mainly on specimens now in the ichthyological collection of 

 Stanford University. The Revillagigedo specimens were col- 

 lected by Dr. C. H. Gilbert during the Albatross expedition of 

 1889, and by Mr. R. C. McGregor in 1897. The Galapagos, 

 Cocos and Clipperton specimens were nearly all collected by the 

 authors during 1898 and 1899. 



The zoological sequence adopted is that used by Jordan and 

 Evermann in their Fishes of North and Middle America. 

 Measurements of length are given in millimeters ; other meas- 

 urements are in hundredths of the length to the end of the 

 caudal vertebrae, except where stated otherwise. 



The authors express their obligation to Dr. David Starr Jor- 

 dan for assistance in the identification of species, and especi- 

 ally for help in the determination of synonymy ; and to Dr. 

 Charles Henry Gilbert for invaluable aid in procuring the fish 

 collecting equipment with which the expedition was provided, 

 and, later, for assistance while working with the material ob- 

 tained. 



1 Proc. Wash. Acad. Sci., Vol. V, 1903 (Sept. 12), 189-229. 



Proc. Wash. Acad. Sci., January, 1905. 



