The Echinodermata of the Firth of Clyde. 331 



Ophiactis Ballii, Llitken (Thompson). 



Ophiocoma Goodsiri, Forbes, Brit. Starf. 



Ophiactis Ballii, Ltk., Addit. ad Hist., pt. 2, 1859. 



Clyde (David Robertson). Off Cumbrae. 



Ophiopholis aculeata, Llitken (0. F. Mliller). 



Ophiocoma hcllis, Forbes, Brit. Starf. 



Ophiopholis aculeata, Ltk., Addit. ad Hist., pt. 1, 1858. 



Common on hard ground from low water to considerable 

 depths. It is decidedly the least fragile of the British 

 Ophiurids, and perfect specimens are easily obtainable. 

 When taken from the water it usually coils the arms in on 

 the disc. Off Inellan the dredge came up almost full of 

 Ophiurids, nearly all of this species. At mouth of Loch 

 Goil, hard ground, this species almost filled the dredge. 



Ophioglypha lacertosa, Lyman (Pennant). 



Ophiura texturata, Forbes, Brit. Starf, 



,, lacertosa, Norman, op. cit. 

 Ophioglypha lacertosa, Lyman, HI. Cat. Mus. Comp. Zool., No. 1, 1865. 



E'ot uncommon on moderately hard ground (stones, shells, 

 and Melobesia). Off Cumbrae, especially on Tan Spit. Off 

 south end of Bute. Off Portincross Point, 12 fathoms. Loch 

 Striven. Loch Goil^ very fine specimens. 



Ophioglypha albida, Lyman (Forbes). 



Ophioglypha alUcla, Lyman, HL Cat. Mus. Comp. Zool., No. 1, 1865. 

 Ophiura albida, Forbes, Brit. Starf. 

 ,, ,, Norman, op>. cit. 



Abundant on gravelly and hard ground in all parts of the 

 Firth. 



Ophioglypha afpinis, Lyman (Llitken), 



Firth of Clyde, 20-40 fathoms (Norman). Loch Fyne, not 

 uncommon on hard and gravelly ground, 15-40 fathoms, 

 Kilbrennan Sound, 75-80 fathoms, not uncommon. 



