ophiothkix. ];;:; 



m 3 . Poole, 2A fms., July 1889. F. J. B. Eeckford, 



Esq. 



n 3 . Firth of Forth. 



o 3 -z 3 . Montrose, 22/6, 27/6, 3/7, 4/7, 6/7, 1889. W. Duncan, Esq. 



a 4 . Aberdeen. G. Sim, Esq. 



6*. E. coast of Ptoss-shire. Dr. Sutherland. 



c 4 , d\ Moussa (Shetland). E. M. Nelson, Esq. 



e 4 . Orkney. Haslar Coll. 



2. Ophiothrix luetkeni. 



Ophiothrix liitkeni, ll'i/r. Thorns. Depths of the Sea, (1872) p. 100 

 [n. n.] ; Lyman, Bull. M. C. Z. iii. (1874) p. 248 ; id. Chall. Rep. 

 Oph. (1882) p. 218; Bell, Ann. $ Mag. viii. (1891) p. 339. 



Ophiothrix pentaphvllum, Bell, Ann. $ May. iv. (1889) p. 436 ; id. 

 J. Mar. Biol. Assoc, i. (1890) p. 325. 



A stout well-grown species. Arms about ten times as long as 

 the radius of the disk. The scales on the disk not unlike those of 

 0. fragilis and, as in it, they may or may not be covered with 

 spines. The interbrachial spaces have the middle third occupied 

 by fine spines, which are sometimes only poorly developed, while 

 the sides are bare. The triangular shields differ chiefly from those 

 of 0. fragilis in not having their spines or spinous granules confined 

 to one angle. 



Teeth -papillae coarse. Arms broad, flat, strong. The upper 

 arm-plates somewhat variable in form, but always with a few fine 

 spines on their surface : they are hardly at all carinate, and have 

 pretty even proximal and distal edges. Spines coarser and rather 

 shorter than in 0. fragilis, about seven in number. The lower 

 arm-plates may have a distal concavity, but this is not very obvious 

 in full-grown specimens. One tentacle-scale. 



Colour white or banded, or spotted with red or purple. 



R. r. 



100 (arm broken) 11-5 



150 (arm broken) 13 



(arms much broken) 15 



Distribution. A young specimen reported by Lyman from the 

 Azores. 90-315 fms. 



a. 40 miles off Bolus Head, 115 fms. R. Irish Acad. 



b. 50 miles off Bolus Head, 200 fms. R. Irish Acad. 



c, d. 50° 50' 15" N., 11° 12' 30" W., 200 fms. G. C. Bourne, Esq. 



e. 48° 39' 42" N., 10° 07' 27" W., 90 fms. G. C. Bourne, Esq. 



f. S.W. coast of Ireland, 200 fms. ' Flying Fox ' Exp. 



g. S. W. coast of Ireland, 250 or 315 fms. ' Flying Fox ' Exp. 

 h-J- ? ' Porcupine ' Exp. 



