Species of British Echinodermata. 113 



Scandinavia. It has also been recorded from Western America ; 

 but possibly an allied species may have been there mistaken 

 for it. 



Ophiura Sarsii, Liitken. 



1854. Ophiura Sarsii, Liitken, Videnskabelige Meddelelser fra der Natur- 



historiske Forening i Kjobenhavn, p. 95. 

 1858. Ophiura Sarsii, Liitken, Addit. ad hist. Ophiuridarum, Forste 



Afdeling, p. 42, pi. 1 . figs. 3, 4. 

 1862. Ophiura Sarsii, Dujardin & Hupe', Hist. Nat. des Zoophytes Echino- 



dermes, p. 250. 



Nearly allied to, and as large as, 0. lacertosa. Interradial plates 

 shield-shaped, with straight sides, their length but slightly 

 exceeding the breadth, and not equalling the space between 

 their apices and the margin of the disk. Lateral arm-plates 

 coalescing on the under surface of the arms, thus leaving no 

 pore. Dorsal arm-plates transversely oblong; ventral arm- 

 plates lenticular (broader than in the last species). Spines 

 exceeding the length of the lateral arm-plates. Two papilli- 

 form spines at each tentacular pore. Clasping-scales with 

 about fifteen short flattened spines. 



Diameter of disk nearly 1 inch. 



Dredged by Messrs. Jeffreys, Waller, and myself at Shetland 

 in 1861, and again in 1863, in 80-100 fathoms. It is an Arctic 

 species, occurring throughout the Scandinavian seas and in 

 Greenland. 



Ophiura albida, Forbes. 

 Ophiura albida, Forbes, British Starfishes, p. 27. 

 Interradial plates shield-shaped, with straight sides, a little 

 longer than broad, not equalling the distance between their 

 apices and the margin of the disk. No pores. Dorsal arm- 

 plates fan-shaped ; ventral arm-plates small, somewhat hexa- 

 gonal, widely separated from each other by the juncture be- 

 tween them of the broad side-plates. Spines shorter than 

 the lateral plates to which they are articulated. One papilli- 

 form spine at each tentacular pore. Clasping-scales with 

 10-15 short spines. Colour rosy, with the radiating plates 

 over the base of the arms white. 

 Diameter of disk -j^-ths of an inch. 



Dredged on every part of our coast, and found both in the 

 Mediterranean and in Scandinavia. 



Ophiura affinis, Liitken. 



1858. Ophiura affinis, Liitken, Addit. ad hist. Ophiuridarum, Forste 



Afdeling, p. 45, pi. 2. fig. 10. 

 1862. Ophiura affinis, Dujardin & Hupe, Hist. Nat. des Zoophytes Echi- 



noderrnes, p. 250. 



Ann. fy Mag. N. Hist. Ser. 3. Vol.xv. 8 



