EXPLANATION OF PLATE TWO. 
Fig. 1. Ambia-opsis SPEL*p:gs DeKay. Natural size. 
Irt. 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. 
2n. Stomach and pyloric appendages. Twice natural size. 
2 6. Scale, magnified. 
2 c. Abdominal cavity, showing stomach and single ovary behind the stomach. 
Twice natural size. 
Fig. 3. Typhlichtiits SUBTERRANEUS Girard. Slightly more than natural size. 
3a. Stomach and pyloric appendages. Twice natural size. 
3 6. Scale, magnified. 
Fig. 4. Chologaster Agassizii Putnam. Natural size. 
4 a. Stomach and pyloric appendages. Twice natural size. 
4 6. Scale, magnified. 
The scales figured on the plate are all from the second or third row under the dorsal 
fin. 4 6 is represented with the posterior margin doion, 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; 46 is so small that the natural 
size can hardly be represented by the black dot. 
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