412 Proceedings of the Royal Physical Society, 



Distribution. 



British Seas. — " On all the shores of Britain and Ireland." 

 "From the littoral zone to that of Corallines" (Forbes, 1). 

 Shetland, down to the Coralline zone (Norman, 1); 15-30 fms. 

 (Forbes, 2). Orkneys, 5-15 fms.; Hebrides (Norman, 2). Hebrides, 

 4-40 fms.; N.-W. Scotland, 15-20 fms. (Forbes, 2). Off Montrose, 

 53 fms. ; off Aberdeen, 40 fms. (Bell, 1). Upper Loch Torridon 

 (HoYLE, 1). Loch Etive, 15-20 fms. ; Tobermory, 30 fms. ; 4 miles 

 S.-E. of Sanda, 30-38 fms. ; between Great Cumbrae and Wemyss 

 Ground, 30-40 fms. ; off Ailsa Craig, 24 fms. ; Kilbrennan 

 Sound, 10-20 fms.; Loch Fyne, 80 fms. (Brit. Mus., presented 

 by John Murray). Clyde Basin, 20-40 fms. (Henderson). 

 Inchmarnock Basin, 37-80 fms. ; Loch Fyne, 30-80 fms. ; Loch 

 Striven, 40 fms, ; Dunoon Basin, 30-40 fms. ; Loch Goil and 

 Upper Loch Long, 30 fms.; Gareloch, 20 fms. (Hoyle, 2). 

 Rothesay (Grieve, 1). Lamlash Bay (Herdman, 1). St Andrews 

 (M'Intosh). Aberdeenshire (Gregor and Dawson). Firth of 

 Forth (FoGGO ; Leslie and Herdman; Brit. Mus.). Off Mull of 

 Galloway, 110-140 fms. (Thompson, 1). Isle of Man, 7-20 fms. 

 (Forbes, 2). Port Erin, Hillbre I., low water; off Puffin L 

 (Herdman, 3). Off Holy L (Brady). Coast of Northumberland 

 and Durham (Hodge). Dublin Bay (Kinahan). Berehaven 

 (Haddon, 2). Cornwall and Devon (Bate), also 20-25 fms. 

 Dorset and Hants, 20-25 fms. (Forbes, 2). South Devon 

 and Cornwall (Couch). Mount's Bay (Tregelles). Polperro 

 (Brit. Mus.). Falmouth (Brit. Mus. ; Cocks). Torbay (Parfitt). 

 Plymouth (Parfitt; Heape ; Coll. Norman^). All coasts of 

 L-eland (Thompson, 2). S.-W. Ireland, 50-110 fms. (Bell, 3, 4). 



Other Localities. — Spitzbergen, Iceland, Norway, Sweden 

 (Copenhagen Mus.). Norway (Sars ; M'Andrew and Barrett, 

 Grieg; Coll. Norman). Denmark (Lutken). Fseroes (Copen- 

 hagen Mus.). Heligoland (Weinland). Holland (Maitland). 

 Coast of France (Fischer; Barrois). Coast of Spain or Por- 

 tugal, Naples (Brit. Mus.). Mediterranean (Carus ; Brit. Mus.). 



Varieties. — Var. Tenuisjnna, Norman. " It is very high." 

 North of Unst, 110 fms. (Norman, 1 ). 



Yar. a. With red test and spines. Off Scarborough (Coll. 

 Norman). 



Var. i6. With brownish-red spines. Norway (Coll. Norman). 



Yar. y. " A marked variety with a tall narrow test occurred 



^ Specimen, 20 ins. equatorial circumference, 18-^- ins. polar circumference. 



