EXPLANATION OF PLATE TWO. 



FIG. 1. AMBLYOPSIS SPEL^EUS DeKay. Natural size. 



la. Stomach and pyloric appendages. Twice natural size. 



1 &. Scale, magnified. 



Ic. Abdominal cavity, showing position of stomach and single ovary. Natural 

 size. 



FIG. 2. CHOLOGASTER CORNUTUS Agassiz. Natural size. 



2 a. Stomach and pyloric appendages. Twice natural size. 



2 &. Scale, magnified. 



2c. Abdominal cavity, showing stomach and single ovary behind the stomach. 

 Twice natural size. 



FIG. 3. TYPHLICHTHYS SUBTERRANETJS Girard. Slightly more than natural size. 



3a. Stomach and pyloric appendages. Twice natural size. 



3 &. Scale, magnified. 



FIG. 4. fnoT nc \ STFT? AGASSIZII Putnam. Natural size. 



4 a. Stomach and pyloric appendages. Twice natural size. 

 4&. Scale, magnified. 



The scales figured on the plate are all from the second or third row under the dorsal 

 fin. 4 b is represented with the posterior margin dotvn, all the others are represented 

 with the posterior margin on the left. The natural size of the scales is given by the 

 minute outline at the left of the figures above each scale ; 4 & is so small that the natural 

 size can hardly be represented by the black dot. 



(54) 



