OF EDUCATION 65 



brown color on the outside, but the inside of the 

 outer lip and aperture is of a bright salmon color. It 

 is very thick and heavy. There are seven whorls, 

 but the upper whorls are very indistinct and difficult 

 to count. On the body whorl there are three rows of 

 knobs, but the one nearest the suture is twice as 

 large as the other two rows. These rows of knobs 

 run parallel with the suture and are about one-third 

 of an inch apart. They form, when they reach the 

 outer lip, long .spines or claws. There are six claws, 

 and the two upper ones are about one inch long, 

 while the others are about three-quarters of an inch 

 long. The upper one grows out very near the apex, 

 but curves toward the apex in such a way as to 

 nearly cover it up. This gives it the appearance of 

 being the continuation of the apex. The two upper 

 claws are somewhat straight, but the others are 

 straight only about half way, and then curve upward. 

 Between the lines that form a portion of the claws, 

 there are other raised lines running in the same 

 direction. The claws are hollow. There is a canal 

 about an inch long, at the lower end of the aperture. 

 The base of the shell curves in, near the upper end 

 of the canal. This part of the shell is very thin and 

 brittle, and also translucent. There are rounded 

 knobs on the edge of the outer lip, which are of a 

 yellowish white color. The pillar is of the same 



