260 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [50] 



Comparative measurenients, §~c. — Continued. 



The dried sucker from the tentacular aria appears to have beeu one 

 of the largest (Plate IX, fig. 11). At the present time the transverse 

 diameter of the ring, outside, is 2S mm ; diameters of the edge, 24 mm and 

 22 mm ; greatest bight of the ring, including denticles, 9.5 mm ; least hight 

 on inner side, 6.5 mm . There are forty-eight marginal denticles, which 

 are nearly the same in size and form all around. They are narrow, 

 triangular, acute, with the edges beveled, sharp, and with a central, 

 thickened, triangular ridge on the outside. The ring is white, hard, 

 smooth, and osseous in appearance. 



Of the other specimens enumerated in the first part of this paper, it 

 is probable, judging from the proportions given, that Nos. 16, 18, and 

 19 also belonged to A. princtps. Xos. 18 and 19 appear to have been 

 much larger than any of the examples of which portions have been pre- 

 served, and it was very unfortunate that the persons who secured them 

 did not know their value, for they were both found within a few miles of 

 the settlement at Little Bay Copper Mine, on the south arm of Notre 

 Dame Bay, and could easily have been taken to Saint John's. 



