Species of British Echinodcrmata, 109 



larger scales at the centre of the disk, as well as by the other 

 characters given above. From A. brachiata it may be known 

 by the six rosulating disk-scales and the less numerous arm- 

 spines. 



Amphiura brachiata (Montagu). 



1841. Ophiocoma brachiata, Forbes, Brit. Starfishes, p. 45. 



1842. Ophiolepis brachiata, Mull. & Troschel, Syst. der Asteriden, p. 96. 

 1857. Amphiura Neapolitana, Sars, Bid. Middlehavets Litt. Fauna, p. 91, 



pi. l.figs. 11-15. 

 1859. Amphiura brachiata and A. Neapolitana, Lutken, Addit. ad hist. 

 Ophiuridarum, Anden Afdeling, p. 114. 



Disk covered with small imbricated scales, which assume a 

 spinose form at the margins, where they stand out from the 

 surface ; radiating scales triangular, diverging, widest at their 

 centre, and having a furrow across the base ; under surface 

 of disk closely covered with minute scales. Arms extremely 

 long and very slender; spines 8-12, short, thick, and of 

 nearly equal leugth, all simple. Two papillary spines at each 

 tentacular pore; the outer, however, is only present at the 

 base of the arms. Upper arm -plates transversely oblong ; 

 lower quadrate, with two longitudinal furrows. 

 Sars's description of Amphiura Neapolitana agrees in every 

 respect with our British species, except that in the specimens 

 which I have examined the radiating plates have no granulations 

 on their surface ; but this can scarcely be regarded by itself 

 as constituting a specific character. Amphiura brachiata has 

 thus a range from the Mediterranean to the Firth of Clyde, 

 whence I have had the opportunity of examining a specimen 

 taken by Mr. D. Robertson on the shores of Little Cumbrae. 

 The other recorded British habitats are Salcombe Bay (Mon- 

 tagu), and the coasts of Down and Antrim (Thompson). 



Amphiura elegans (Leach). 



1815. Ophiura elegans, Leach, Zool. Miscell. vol. ii. p. 57. 



1823. Asterias squamata, Delle Chiaje, Mem. sulla storia e anatornia degli 



animali del regno di Napoli, pi. 34. fig. 1. 

 1835. Ophiura neglecta, Johnston, Mag. Nat. Hist. vol. viii. p. 467- 



1841. Ophiocoma neglecta, Forbes, Brit. Starfishes, p. 30. 



1842. Ophiolepis squamata, Miiller & Troschel, Syst. der Asteriden, p. 94. 

 1845. Amphiura neglecta, Forbes, Trans. Linn. Soc. vol. xix. p. 150. 

 1861. Amphiura squamata, Sars, Oversigt af Norges Echinodermer, p. 21. 



Amphiura elegans ranges from the Mediterranean and iEgean 

 seas to Scandinavia. It is found all round our own coasts, 

 under stones between tide-marks, and is also taken, though 

 rarely, with the dredge. 



Amphiura Ballii (Thompson). 

 1840. Ophiocoma Ballii, Thompson, Ann. Nat. Hist. vol. v. p. 99. 



