114 Rev. A. M. Norman on the Genera and 



1863. Ophiura Normani, Hodge, Transactions Tyneside Naturalists' Field- 

 Club, vol. v. p. 296, pi. 16. figs. 1-3. 



Disk rosulated, having a central scale surrounded by five, then 

 five outside these again, the interspaces of these larger scales 

 filled up with small round scales. Interradial plates fiddle- 

 shaped, longer than broad, not equalling in length the space 

 between their apices and the margin of the disk. Arms long, 

 slender, and very flexible. No pores as in O. lacertosa. Dorsal 

 arm-scales transversely oblong ; ventral lenticular, small, se- 

 parated from each other by the junction of the lateral arm- 

 plates. Spines as long as, or longer than, the lateral plates. 

 One papilliform spine over each tentacular pore. Clasping- 

 scales with about ten spines, and a circlet of spines meeting 

 over the insertion of the arm. 



Diameter of disk -^ths of an inch. 



It is probable that this pretty little species will prove to be 

 not unfrequent in our seas. We have dredged it in 20-40 fathoms 

 in the Firth of Clyde, at Shetland, and off the Northumberland 

 coast ; and Mr. Hodge has procured it at Seaham, in the county 

 of Durham. Mr. Hodge has described this species as British, 

 under the name of Ophiura Normani, which must, however, 

 yield to the prior appellation of Lutken, which we have here 

 adopted. The type specimens were from the coast of Norway. 



Ophiura squamosa, Lutken. 



1854. Ophiura squamosa, Lutken, Videnskabelige Middelelser fra der 

 Naturhistoriske Forening i Kjobenhavn, p. 95. 



1857. Ophiura squamosa, Lutken, Oversigt over Gronlands Ecbinodermata, 



p. 50. 



1858. Ophiura squamosa, Lutken, Addit. ad hist. Ophiuridarum, Forste 



Afdeling, p. 46, pi. 1. fig. 7. 

 1862. Ophiura squamosa, Dujardin & Hupe, Hist. Nat. des Zoophytes 

 Echinodermes, p. 251. 



Disk entirely covered with small imbricated scales of equal or 

 nearly equal size. Interradial plates triangular, as broad as 

 long, shorter than the distance from their apices to the margin 

 of the disk. No pores. Dorsal arm-plates fan-shaped; 

 ventral small, cordate, and emarginate at the apex. The 

 longest of the spines equals the length of the lateral plates. 

 One papillary spine to each tentacular pore. Clasping-scales 

 with very few and short marginal spines. 



Diameter of disk -^ths of an inch. 



This small Ophiura has been found abroad in Norway, Fin- 

 mark, and Greenland. All the British specimens that we have 

 hitherto seen have been taken on the east coast. Mr. Alder and 

 the author have procured it off Cullercoats ; Mr. Hodge at Sea- 



