PROCEEDiyOS OF THE NATIONAL MUSEUM. 



Measurements of Osmerus attenuatus. 



Total length of body in mm 



Length of body without caudal in mm. . 

 Depth of body in hundredths of length 



without caudal 



Depth of caudal peduncle 



Length of head , 



Longitudinal diameter of eye , 



Interorbital width 



Length of maxillary 



Length of snout to tip of upper jaw , 



Length of lower jaw , 



Length of pectoral , 



Length of ventrals 



Longest dorsal ray 



Longest anal ray 



Longest caudal ray 



Distance of dorsal from tip of snout 



Distance of ventral from chin 



Distance of tipof lower jaw to adiiwse fm . 

 Distance from origin of pectoral to origin 



of ventrals 



Number of dorsal rays 



Number of anal rays 



Scales in longitudinal series above lateral 



line 



Gill rakers on first gill arch 



6+ 

 12 



7- 

 14 

 15 

 15 

 13 



8 

 19 

 57 

 53 

 82 



73 

 12+24 

 Fe- 

 male. 



The measurements of the 10 specimens at hand were compared 

 with those of Mr. Lockington, in his original description of Osmerus 

 attenuatus. They were found to correspond so closely as to prove 

 without question that this species is referable to the species Osmerus 

 attenuatus. 



His table of measurements, from the original description, reduced 

 to the terms employed in this paper, follows: 



Measurements of Osmerus attenuatus. 



Total length of body, in mm 



Length without caudal, in mm 



Depth of body , in hundredths of length without caudal 



Depth of caudal peduncle 



Length of head 



Diameter of eye 



Interorbital width 



Length of snout to tip of upper jaw 



Length of lower jaw 



Length of pectoral 



Length of ventrals 



Longest dorsal ray 



Dorsal from tip of snout 



Ventral from chin 



Tip of lower jaw to adipose fin 



152 



129 



16 



8 



24 

 6 



7 

 6 

 Not given. 

 16 



13+ 

 13+ 

 56 

 55 

 85 



