368 



THE ATLANTIC. 



[CIIAP. V. 



tnre soundings were taken to 800 fathoms ; during the opera- 

 tion, however, we met with rather a serious loss, for the sound- 

 ing-line with seven thermometers attached fouled the propeller 

 and was carried away. On the 27th, the depth was again 2650 

 fathoms, with a bottom of grayish red clay. The trawl was put 

 over in the forenoon, and as this was by far the greatest depth 

 at which we had attempted to employ it, we looked with great 

 interest to the result. In the evening the trawl returned to us 

 in safety, and contained a caridid shrimp, a number of worm- 

 tubes composed chiefly of small foraminifera, two examples of 

 an irregular sea-urchin, and a number of ophiurideans referred 

 to the genera AmpMura and Ophioglypha. The crustacean 

 may be a pelagic form living at intermediate depths, for such 

 we have reason to believe exist and attain a large size ; the an- 

 nelid we had not an opportunity of determining, as the tubes 

 only were present ; the urchin is a species new to science and 

 of great interest. Cahjmne relicta (Fig. 102) is at first sight ex- 

 tremely like the normal Ananchytid^; indeed, it has a close 

 general resemblance to the common chalk form Ananchytes 

 ovata. Many important characters, however, separate it from 

 the' genus Ananchytes, and until we have had an opportunity 

 of comparing the whole series, I am not prepared to say that 

 this genus may not find its place in a family as yet undefined, 

 with Pourtalesia, Aeeste, and Aerope, and some wonderful new 



