182 



OriUURuIDEA. 



arm-plates have a concave proximal and a strongly curved distal 

 edge ; the upper surface is carinate and the distal end of the keel is 

 knobbed. The side arm-plates intrude considerably on the proximal 

 part of these plates and carry about seven spines, of which the 

 uppermost is shorter than the next three or four, but not so short as 

 the lowermost two or three. The under arm-plates have the distal 

 edge wider than the proximal, and often concave outwards. One 

 tentacle-scale. 



Colour very variable, sometimes very dark, often banded and 

 spotted with brick-red ; sometimes a deep brown is the very pre- 

 vailing hue, sometimes grey, slate, or bluish. 



It is difficult to give a satisfactory account of the length of the 

 arms ; in the four here given the total length of the arm is nearly 

 correct for the last only. 



E. r. 



76 8 



55 5-5 



41 4-5 



28 3-7 



Distribution. Norway to Mediterranean — often very abundant. 

 0-52 fms. 



n-e, 



f-h. 



i. 



a . 



U. 



c'. 

 d'-li. 

 i'-m' '. 



ri. 

 o',p'. 



f, ll'. 



V . 



w'-z'. 



a", b". 



c"-e". 



f"-k". 



I". 



it i / 



m -o . 



l>"-r". 



it 1 1 



s -%o . 



x"-b\ 



c 3 -e\ 



/ 3 - 



ff 3 - 



h 3 , P. 



Faeroe Bank. 



59° 35' N., 9° 11' W., 767 fms. 



The Minch. 



Sound of Midi, Tobermory, 30 fms. 



Sound of Mull, Tobermory, 70 fms. 



Sound of Mull, Tobermory, 5/9/87. 



Loch Leven, 25 fms., 27/8/87. 



Firth of Lorn. 



Loch Etive. 



Great Cumbrae and Wemyss Ground. 



West coast of Scotland. 



20 miles off Achill Head, 126 fms. ' 



40 miles off Achill Head, 220 fms. 



Blacksod Bay, 5-6 fms., 21/4/91. 



Blacksod Bay. 



Kenmare River. 



Portaferrv, Aug. 1837, and Strau<rford, 



11/10/34. 

 Off Liverpool. 

 Falmouth. 

 Falmouth Harbour. 

 Falmouth. 

 Plymouth. 

 Torbav. 



Weymouth, Oct, 1880. 

 Herm. 



Herm, Sept. 1889. 

 Channel Isles. 

 Lulworth, July 1889. 



f~P. Lobster Patch, Poole, 5| fms. 



' Porcupine ' Exp. 

 ' Porcupine ' Exp. 

 ' Porcupine ' Exp. 

 John Murray, Esq. 

 John Murray, Esq. 

 John Murray, Esq. 

 John Murray, Esq. 

 John Murray, Esq. 

 John Murray, Esq. 

 John Murray, Esq. 

 John Murray, Esq. 

 R. Irish Acad. 

 R. Irish Acad. 

 R. Irish Acad. 

 Dr. Grenfell. 



Belfast Phil. & Nat. 

 Hist. Soc. 



W. P. Cocks, Esq. 

 W. P. Cocks, Esq. 



E. A. Smith, Esq. 

 R. L. Spencer, Esq. 

 Prof. Bell. 



R. L. Spencer, Esq. 



F. J. B. Beckford, 

 Esq. 



F. J. B. Beckford, 

 Esq. 



