294 



PBOCEEDINGB OF THE NATIONAL MUSEUM. 



The distance of the ventrals from the chm is less than the distance 

 between the dorsal and the tip of the snout. The pectoral extends 

 to a distance equal to the interorbital space, from the origin of the 

 ventrals. The ventrals reach to within two-thirds of the diameter 

 of the eye from the vent. The distance between the posterior inser- 

 tion of the dorsal and the insertion of the adipose dorsal is contained 

 li times in the head. As in Osmerus thaleichihys, the distance 

 between the origin of the pectoral and the origin of the ventrals is 

 equal to the length of the head. The anterior origin of the ventrals 

 is one-half of the diameter of the eye in front of the anterior insertion 

 of the dorsal. The tip of the dorsal extends to a point opposite the 

 origin of the anal. The adipose dorsal is inserted slightly anterior 

 to the posterior end of the anal, as in the other two species. 



Here described from ten specimens found in the market in San 

 Francisco. The type (Cat. No. 74834, U.S.N.M.) is deposited m the 

 United States National Museum; cotypes are at Stanford University. 



Measurements of Osmerus starksi. 



OSMERUS ATTENUATUS Lockington. 



Osmerus attenuatus is a larger fish than either Osmerus starlcsi or 

 Osmerus thaleicUhys, and may be recognized by its comparatively 

 slender body, its short pectorals, and the straight commissure of 



