IA p. in.] THE CRUISES OF THE ' PORCUPINE: 123 



ich marginal plate covered with miliary grains, 

 nd with a prominent rigid central spine. This is 

 large form, one of our most striking additions to 

 !ne tale of known species. It measures 120 mm. from 

 lip to tip of the arms across the disk. The colour 

 5 a rich cream, or various shades of light rose. 



Ctenodiscus crispatus occurred rarely and of rather 

 mall size, not more than 25 mm. across. Nearly 

 very haul brought up small specimens of Aster- 

 canthion mulleri, M. SARS, and specimens of all sizes 

 f Cribrella sanguinolenta, O. T\ MULLER. 

 The distribution of Ophiuoridea was altogether 

 iew to a British dredger. By far the most abundant 

 orm in moderate depths was Amphiura abyssicola, 

 \L SARS, a species hitherto unknown in the British 

 eas ; and at greater depths this species was associated 

 ! n about equal numbers with Ophiocten sericeum, 

 ?ORBES. 



Everywhere Ophiacantha spimdosa, M. and T., 

 bounds, and the common Ophioglypha lacertosa of 

 hallow water is replaced by O. sarsii, LUTKEN, 

 hile Ophiopholis aculeata, O. P. MULLER, loves to 

 estle among the branches of corals and stony 

 lyzoa. In such characteristic cold area dredg- 

 ngs as Stations 54, 55, 57, and 64, we find the 

 wo species of Ophioscolex, O. purpurea, 1). and 

 ., and O. glacialis, M. and T. ; the former in 

 me places in great abundance, and the latter 

 uch more scarce. Both species are new to the 

 ritish area, and two very remarkable forms which 

 company them are new to science. One of these 

 s a very large ophiurid with thick arms, up- 

 vards of three decimetres long, and a large soft disk 



