266 



Annals of the Carnegie Museum. 



I. The Average Length of the Parts of Body of Formosan Eel. 



A. 

 A . japonica. sinensis. 



Total length loo.oo loo.oo 



Distance from gill-opening to origin of dorsal 17.01 18.43 



Length of head 12.42 12.12 



Distance from gill-opening to vent 26.55 ■' 26.72 



Distance from tip of snout to origin of dorsal 28.95 29.40 



Distance between origins of dorsal and anal 10.72 , 



Length of pectoral 



Length of upper jaw 



Length of snout 



Diameter of eye 



Interorbital space 



Height of body in front of anus 



Ratio of pre-anal and postanal parts. 



4-I5- 

 4.04. 

 2.51. 

 1. 13. 

 2.19 . 

 4-51 ■ 

 1:58. 



9.64 

 4.09 

 3-56 

 2.26 

 1.38 

 1-73 

 4-73 

 1 : 60 



n. Measurements of Anguilla japonica. 

 Actual Length in Mm. 



Locality. 



Taihoku. Taihoku 



Total length ! 310 mm. 357 mm. 



Head | 41 



Gill-opening to dorsal. . j 57 

 Gill-opening to vent. . . 87 



Dorsal to anal 33 



Upper jaw 12 



Pectoral 13 



Snout 8 



Eye 3 



Interorbital space .... 7 



Height of body 18 



Snout to vent I 124 



Vent to tip of caudal. . . J 186 

 Snout to dorsal 95 



46 

 61 

 98 

 40 



15 

 16 



9 

 5 

 8 



19 



142 



215 

 107 



Taihoku. 



445 mm. 



56 



70 

 no 



45 

 18 

 20 

 II 



5 



9 

 22 



163 



282 

 124 



Taihoku. 



355 mm. 

 47 

 70 

 96 



37 

 12 



14 

 8 



4 



7 



17 



141 



214 



no 



Taihoku. 



Giran. 



355 mm- 

 46 

 60 

 95 

 39 

 14 

 15 

 10 



4 



9 



19 



138 



217 



105 



182 mm. 

 22 

 27 

 46 

 20 



7 



6.5 



4-5 



2 



4 



9 



68 



114 



50 



in. Length in Percent of the Total Length. 



Locality. 



Total length 



Head 



Gill-opening to dorsal 

 Gill-opening to vent . 



Dorsal to anal 



Upper jaw 



Pectoral 



Snout 



Eye 



Interorbital space . . . 



Height of bod J' 



Snout to vent 



Vent to tip of caudal. 

 Snout to dorsal 



Taihoku. Taihoku. Taihoku. Taihoku. Taihoku. Giran. 



100.00 



12.95 



16.90 

 26.76 

 10.98 



3-94 



4.22 



2.81 



1. 12 



2-53 



5-35 



38-87 



61.12 



26.76 



