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strong muscles of the inouth pieces are extended. In the centre 

 we see the strong teeth, and here we can see right through the 

 body, as not only the covering of the disk, but also the thin 

 dorsal wall of the stomach with the genital pouches are quite 

 torn off. Also the bases of the arms have lost their covering, as 

 far as they were hidden under the disk, and that very regularly, 

 so as to exposé on each arm exactly the same number, i. e. 6, 

 arm-bones. Of those the three first are small, though increasing 

 in length, the next three being of equal size and linked to each 

 other in the curious way often seen in Ophiurids. The muscles 

 between the arm-bones are also uncovered and exposed to the 

 seawater. At the seventh joint on each arm the upper-arm plates 

 begin and further on the arm are quite normal. 



But when comparing the ventral surface of the disk with that 

 of specimens of Ophiocnida echinata Ljn. (Lym.), Fig 2, which I 



collected in the same place, I soon found out, that the mutilated 

 animals belonged to this same species. Mouth-shields, jaws, mouth- 

 papillae etc, were all absolutely the same, and on removing 

 the dorsal covering of the disk, the genital pouches are easily 

 torn off at the same time, and likewise the dorsal surface of the 



