692 THE AMERICAN NATURALIST. [Vol. XXXVII. 



applied to a genus of Elopidx, the present writer prefers to use 

 the name Holcolepis. How much confusion might have been 

 avoided had the latter name been employed for the elopid genus 

 as soon as it was discovered that Osmeroides kwcsicnsis was 

 not congeneric with ( ). mouastcri ! Specimens of a Nematonotus 

 of unusually large size and having a greatly elongated first dorsal 

 ray are referred to N. longispinus (Davis). 



Eels are proverbial for their lubricity, but many of them were 

 caught in the net formed by the sediments of the Senonian 

 ocean. Davis had already in 1887 described from Hakel a little 

 species which he called Anguilla hake lens is, but which Wood- 

 ward refers to his genus Urenchelys. This author has likewise 

 been so fortunate as to find another species of the genus in the 

 Turonian of England. It is the oldest known eel. He describes 

 also a third species from Sahel Alma. The species of the genus 

 are shown to have about one hundred vertebrae and a caudal fin 

 which is distinct from both the dorsal fin and the anal. The 

 present writer has named a fourth species from a specimen col- 

 lected at Hajula. 



Besides these representatives of the family Anguillidae, the 

 writer has found two species which present most of the char- 

 acters of Urenchelys, but which are peculiar in possessing well- 

 developed ventral tins, a new feature in eels. This character 

 brings the Apodes into closer relation with the other bony fishes. 



worthy woman, Anguillavus baths/n ine. A larger species from 

 Hajula has been christened A. quadripinnis : Besides ventral 

 fins, this species seems to have had a row of enlarged scales on 

 each side of the body, perhaps along the lateral line. 



Still another eel hails from Hakel. It has been very slender, 



adjoining it, but the second one behind it or in front of it. This 



