

118 



THE DEPTHS OF THE SEA. [CHAP. in. 



noclypus, the pluteus ' pseudembryo ' having been 

 carried along and distributed by the gulf-stream, or 

 of some European deep-water clypeastroid hitherto 

 unknown. 



The three so-called species of the genus Toxo- 

 pneustes of the cold area must, I fear, submit 

 to fusion. T. pictus, NORMAN, and T. pallidus, 

 G. O. SARS, are certainly varieties of T. drobacM- 

 ensis, O. P. MULLER. 



The young of Brissopsis lyrifera, FORBES, were 

 abundant at all depths, but mature examples did 

 not occur beyond 200 fathoms, and were larger 

 and more abundant from 50 to 100 fathoms. Tri-_ 

 pylMsfragilis, D. and K., a rather scarce Scandinavian 

 form, was added to the British fauna ; several speci 

 mens having been taken, unfortunately usuall; 

 crushed on account of its great delicacy, in the 

 deeper and colder hauls. Magnificent specimens oi 

 the handsome heart -urchin, Spatangus raschi, wer< 

 very abundant, associated in the same zone of dept] 

 with Oidaris. 



Star-fishes were very numerous, rare and 

 species sometimes actually crowding the hempe] 

 tangles. The two species of Brisinga, IB. endeca- 

 cnemos, ABSJ., and . coronata, G. O. SARS, came u] 

 occasionally and were always regarded as prizes 

 although it was a matter of some difficulty to ex 

 tricate their spiny arms one after the other from the 

 tangles; they were scarcely ever within the dred| 

 Salaster papposm, FORBES, apparently their nearest oi 

 kin though far removed, was represented abundantly 

 by a very pretty deep-water variety, with ten arms 

 about forty millimetres across from tip to tip, 





