FISHES, 



Table of Comparative Measurements. 



133 



Gasterosteus G. pungitiug 

 ungitius* var. brachy- 

 poda Bean 

 (averages of 

 8 examples). 



p 



Linn. (aver- 



ages of 7 ex- 



aiuples). 



lOOOths of 

 length. 



lOOOths of 

 length. 



Body : 



Greatest height .170 



Greatest width .100 



Height at ventral.s . 170 



Least height of tail .036 



Length of caudal peduncle : .150 



Head: 



Greatest length .265 



Greatest width .110 



Width of inter-orbital area .062 



Length of snout . 062 



Length of operculum . 084 



Length of upper jaw . 070 



Length of mandible .080 



Long diameter of eye . 082 



Dorsal (spinous) : 



Distance from snout .286 



Length of base .276 



Length of first spine .066 



Length of second spine . 066 



Length of last spine .050 



Dorsal 



Length of base .245 



Length of antecedent spine . 080 



Length of first ray .140 



Length of longest ray . 140 



Length of last ray 



Anal : 



Distance from snout . 570 



Length of base . 220 



Length of first spine .086 



Length of first ray .130 



Length of longest ray .130 



Caudal:" 



Length of middle rays . 110 



Length of external rays . 137 



Pectoral": 



Distance from snout . 300 



Lenath .160 



Ventral : 



Distance from snout . 370 



Length .121 



.187 

 ,107 

 .177 

 .032 

 .140 



113 



,076 

 ,073 



,276 

 ,310 

 ,057 

 ,058 

 .050 



,120 

 ,120 

 040 



.235 

 .064 

 .120 

 .120 



.117 

 .134 



.300 

 .160 



.357 



= Pygosteus occidental^ (C. & V.) Brevoort, from which the averages were taken, 



Table of Measurements. 

 Genus, Gasterosteus. 



Current number of specimen 

 Locality 



L., 22, 015 a. 



'Pungitius Pungitius 



L.,22,015&. 



Christiania, ^Norway, B. Col- 

 lett. 



Blanchardi Sauvage 

 (type) (39) 21,139. 



Boston, TJ. S. 



Millimetres 

 and lOOths 

 of length. 



Millimetres 

 and lOOths 

 of length. 



Millimetres and lOOths 

 of length. 



Extreme length to origin of middle caudal rays . . 



Length to end of external caudal rays 



Body : 



Greatest height 



Greatest width 



Height at ventrala 



Least height of tail 



Length of caudal peduncle 



.18 

 .10 

 .18 

 .04 

 .13 



.16 

 .09 

 .16 

 .04 

 .135 



