408 DR MURRAY ON THE DEEP AND SHALLOW-WATER MARINE FAUNA 



6 species (or 17 per cent.) are known from regions north of the tropic of Cancer, l)ut not 



from the intervening tropical zone (sec List IIIc.) ; and 



2 sj)ecies (or 6 per cent.) are known both from regions within and north of the tropics 



(see List Ilh/.). 



We may now consider iu detail tlie distribution of these 36 species, according 

 to the groups given above, indicating briefly the geographical and bathymetrical 

 distribution of each species outside the region represented by these three Stations ; five 

 of the species (viz., Axinella erecta, Aulocahjx irregularis, Solenosmilia variabilis, 

 Opliiolehes scorteus, and Echinus magellanicus) occur in the previous lists (Lists I. and 

 n.) and the distributional notes need not be repeated here. 



LIST Ilia. 



In the fir.st place we give a list of the 21 species which are known to occur 

 outside the region under consideration only iu somewhat similar latitudes, i.e., in 

 regions south of the tropic of Capricorn. From the distributional notes it will be observed 

 that 2 of the species are known from deep water over 1000 fathoms (the distribution of 

 which has already been discussed in detail) ; other 5 species are unknown in depths less 

 than 150 fathoms; the remaining 14 species extend into shallow water under 150 

 fathoms. 



Gellius carduus — ^Marion Island, 50 to 150 fathoms ; ilagellan Strait, 245 fathoms (var.). 



lopJton cltelifer — Near the Cape, 150 fathom?. 



Mi/xilla rwbilis — Magellan Strait, 140 aud 245 fathoms (vars.); near River Plate, 600 fathoms. 



Primnoisls antarctica — Kerguelen, shallow water. 



T/icniarella antarctica — Falkland Islands, shallow water. 



„ varialdli^ — Near Heard Island, 150 fathoms (var). 



Onhvella simplex — Kerguelen, 10 to 50 fathoms (var.) ; Tristan da Cunha, 90 to 150 fathoms. 

 AmpJnura studeri — Marion Island, 50 to 150 fathoms ; Kerguelen, 20 to 60 fathoms ; Heard I.^land, 75 fathoms. 

 Astrotoma afjasdzii — Near Heard Island, 150 fathoms ; Magellan Strait, 40 to 175 fathoms ; between Magellan 



Strait aud Falkland Islands, 55 fathoms. 

 Ophiolehes scoi-teus (for distribution, see List I.). 

 Echinus mar/ellanicus (for distribution, see List I.). 



Cucumaria serrate. — Marion Island, 50 to 75 fathoms ; Heard Island, 75 and 150 fathoms. 

 Psolus ephippifer — Marion Island, depth (1); Kerguelen, 20 to 60 fathoms ; Heard Island, 75 aud 150 fathoms. 

 Layisca ma/jellaruca — Kerguelen, 127 fathoms: Magellan Strait, 175 and 400 fathoms. 

 Polyeunoa lievis — Magellan Strait, 400 fathoms. 

 Arcfurides cornutiis — Kerguelen, shallow water. 



Serolis latifrons — Kerguelen, 5 to 40 fathoms ; Auckland Islands, shallow water. 

 Munida spinosa — Near River Plate, 600 fathoms. 

 Mucronella ventdeosa — ^Marion Island, 80 to 1 50 fathoms. 



Mijriozoum »?iarjonen«e— Marion Island, 50 to 150 fathoms ; Heard Island, 75 fathoms. 

 Sddzoporella elegans — Near the Cape, 150 fathoms. 



