8+ 
Praegev — The Marine Shells 
Mr. Templeton’s care and accuracy are well known, but they must have been 
derived from some passing vessel or other extraneous source; this beautiful 
species inhabits nowhere north of the Channel Islands.] 
Scissurella crispata, Fleming. 
A northern species, frequenting, in Britain, chiefly the Orkney and Shetland 
Islands. “ Mouth of Belfast Bay, 27 fathoms, 2 dead specimens dr-edged by 
Mr. Hyndman ’’-Thompson. In Hyndman’s Reports, additional specimens 
are mentioned as having been obtained on the Turbot Bank, and a single 
fresh shell was taken in 80 fathoms some 6 miles north of the Maidens. 
Cyclostrema nitens, Philippi. _ 
Found by Jeffreys in Turbot Bank sand sent to him— Hyndman, 18o8 
Report (as Trochus (Margarita) pusillus). 
Cyclostrema serpuloides, Montagu. 
In Turbot Bank sand, as last {sub Skenea divisa ) ; and in his 1859 Report 
Hyndman records having dredged living examples off Larne. 
[Margarita costulata, Moller. 
Found by Mr. Waller in Turbot Bank sand— Hyndman. It is an arctic 
species, whose southern limit is Iceland. Dead specimens have been dredged 
in several Scotch localities also, which, with those from the Turbot Bank, 
must be looked on as relics of the great ice age.] 
Trochus helieinus, Fabricius. 
“Living, common, on Laminaria digitata, $e.” Hyndman. Assuming 
that Margarita communis, Mont. = M. vulgaris , Leach, Thompson mentions 
the loughs of Belfast, Larne, and Strangford as localities. Hyndman dredged 
dead specimens on the Turbot Bank. 
var. fasciata. “ Found by Mr. Hyndman in the North of Ireland ~ 
Jeffreys. 
Trochus aroenlandicus, Chemnitz. 
Dredged in a dead state by Hyndman on the Turbot Bank {sub T. {Marga- 
rita) undulatus). The specimens were determined by Jeffreys, who, how- 
ever, remarks that they look suspiciously like fossils from a submarine post- 
tertiary deposit in the locality. It is an arctic species, which descends as far 
southward as the north of Scotland. 
[Trochus cinereus, Couthouy. 
“ Has been dredged by Mr. Waller on the Antrim Coast ; but it is a sub- 
marine fossil” — Jeffreys. Hyndman also records it, as Margarita cinereal) 
Trochus magus, Linne. 
Not uncommon on the coasts of Derry, Antrim, and Down, living chiefly 
in about 5 to 10 fathoms. 
Trochus tumidus, Montagu. 
Belfast and Strangford Loughs, and Donaghadee— Thompson. Hyndman 
dredged it very frequently, living in depths ranging from 10 to 100 fathoms, 
