LAS#A, KELLIA. V7 
Forbes and Hanley enumerate about a score of localities, 
scattered over the British and Irish coasts; the south-east 
of England, however, is not represented. Messrs. Leckenby 
and Marshall state that this Montacuta frequents the spines 
of Spatangus purpureus; but unlike its relative, M. sub- 
striata, the present species takes up its abode on the dorsal 
area of the urchin. I have not met with any confirmation 
of this rather singular habitat. 
Foreign localities—Norway, (Sarvs), Sweden (Lovén), 
western France (Lafont), Spain, Mogador, and the Mediter- 
ranean (M‘Andrew). 
LasaaA, Leach. 
Laseea rubra, Montagu. 
Cardium rubrum, Montagu; Kellia rubra, Turton; Poronia 
rubra, Recluz. 
Habitat.—Under stones, in crevices of rocks, and at roots 
of small seaweeds between tide marks. This species is 
exceedingly abundant in Cumbrae, from Farland Point to 
Fintry Bay; and it is probably common throughout the whole 
district in suitable situations. I have noticed it at Gourock, 
Rothesay, Lochs Long, Goil, and Fyne. Mr. Norman reports 
the type and a white variety from Lamlash. 
British distribution.—On most of our rocky coasts, 
abundant but somewhat local. It rarely occurs below the 
laminarian zone. 
Foreign localities—From northern France to Spain, the 
Canary Islands, and Madeira (M‘Andrew), and throughout 
the northern shores of the Mediterranean. Mr. Jeffreys 
(in Brit. Con.) states that it has been found by Steenstrup 
in Iceland, and by Lilljeborg in Norway. The distribution 
is, however, almost entirely southern. Shells said to be 
identical with this are found on the Pacific Coast of North 
America and in Magellan Straits. 
KELLIA, Turton. 
Kellia suborbicularis, Montagu. 
Mya suborbicularis, Montagu ; Tellimya suborbicularis, 
Brown. 
Habitat—In mud in the cavities of dead shells (bivalves 
and univalves), not common, I have taken it in 10 to 14 
fathoms, off St. Ninian’s Bay and Garroch Head, Bute; and 
in 18 to 20 fathoms outside the Tan Spit, Cumbrae, on a 
bank of rough boulders, mud, and dead shells. 
B 
