330 Mr. Jeffreys on Stilifer, 
British Isles.—Torbay, on Echinus esculentus, L. (E. sphera, 
Mill.): Turton. Berwick, on #. esculentus: Johnston. North- 
umberland and Durham, on E. pictus: Alder, Howse, and Brady. 
Cork: Humphreys. Plymouth, on E. saxatilis: Stewart, Bate, 
andJ.G.J. Shetland, on E. Drobachiensis, Mill. (E£. neglectus, 
Lam.): J.G. J. 
(N.B. Although most Scandinavian naturalists consider the 
Echinus neglectus of Lamarck to be the same species as the 2. Dré- 
bachiensis of Miller’s Prodromus to the ‘ Zoologia Danica,’ it may 
be doubted whether the latter species is not the H. Flemingii of 
Ball. Miiller’s description is “ hemispheericus, pallidus, spinis 
longis, albis,’ which seems to agree better with H. Flemingit 
than with LE. neglectus.) 
The shell described by Professor Macgillivray, in his ‘ Mol- 
luscous Animals of Aberdeen, Kincardine, and Banff, as Stylina 
stylifera, and stated to have been found by one of his pupils 
“adhering to an Actinia brought up by the lines,” was the 
young of a common West Indian land shell belonging to the 
Cyclophoride. The habitat alone might have induced a suspicion 
that this shell was not our S¢ilifer; and I had an opportunity 
of ascertaining what it really was. 
Scandinavia.—From Bohuslian in Sweden to the coast of Nor- 
way: Lovén. Christiania-fiord, Norway, on Echinus esculentus 
at Drobak, and on fishing-grounds at two other places: Asb- 
jornsen. Bohuslan, in 20 fathoms, on LE. neglectus: Malm. 
Fischer also states that Stelfer Turtont is not uncommon on 
Echinus lividus, near the mouth-opening; but he cites no au- 
thority for this unusual habitat. H. lividus, as is well known, 
excavates holes in slate and gneissic rocks, within tide-marks, 
and its lower surface is pressed closely to the stone. 
Another instance of the same kind of mollusk infesting dif- 
ferent Echinoids is that of Montacuta substriata, which has been 
found not only on Spatangus purpureus, but on S. meridionalis, 
Amphidetus ovatus, Brissus lyrifer, Echinus esculentus, and Ci- 
daris hystrix. 
2. S. astericola, Broderip. 
Hab. Gord Hood’s Island, on Asterias solaris (A. helianthus, 
Lam.) : Cuming. 
3. S. Mittrei, Petit. 
Hab. Indian Ocean: Mittré. 
4, S. fulvescens, A. Adams. 
Hab. Isle of Labuan, in an Asterias: A. Adams. 
