RROCKEDINQS 



OK 



WASHINGTON ACADEMY OF SCIENCES 



VOL. V, PP. 189-229. [PLATES n-xx.] SEPTEMBER 12, 1903, 



PAPERS FROM THE HOPKINS STANFORD GALA- 

 PAGOS EXPEDITION, 1898-1899. 



XV. 



NEW FISHES. 

 BY EDMUND HELLER AND ROBERT EVANS SNODGRASS. 



INTRODUCTION. 



THE twenty-three new species here recorded are described 

 from the material obtained by the authors in 1898 and 1899 at 

 the Galapagos Archipelago, Cocos Island and in the neighbor- 

 ing waters. The proportional measurements given are percen- 

 tages of the length to the end of the vertebrae, except where 

 otherwise stated. The writers are indebted to Dr. David Starr 

 Jordan and to Dr. Charles Henry Gilbert, of Stanford Univer- 

 sity, for suggestions and assistance while working on the 

 collection. 



Evolantia, gen. nov. 



Characters. Pectorals about one third of total length; ventrals 

 very short, outer lobe three and three fourths in head, a little less than 

 four in pectoral, inner lobe two in head, insertion midway between 

 posterior border of opercle and base of caudal ; anal fin but little 

 shorter than dorsal. 



A single species known, E. micropterus (Cuvier & Valenciennes) . 



According to the disposition by Jordan & Evermann l of the flying 

 fishes with the ventrals inserted behind the middle of the body into 



\Fishes N. & M. A., HI, Addenda, pp. 2835, 2836. 



Proc. Wash. Acad. Sci., Sept., 1903. (189) 



