322 
MOLLUSCA. 
animals, though dead) were found by Dr. J. L. Drummond and myself 
near Groomsport, and a fortnight afterwards one was obtained there. A 
specimen of this shell, kindly sent to me by Capt. Fayrer, It. N., of Port- 
patrick, early in the year 1837, was one of about a dozen collected some 
months before on the shore of Wigtonshire, by Lady Agnew of Lochnaw 
Castle. I noticed the occurrence of this species in 1836, as here men- 
tioned, in Charlesworth’s Mag. Those obtained in Scotland were proba- 
bly a portion of the same fleet that had touched at different parts of the 
coast of Ireland. On the first of August that year, this Ianthina was 
abundant in the vicinity of the Giant’s Causeway. Once only did Dr. It. 
Ball obtain even a single specimen at Youghal. At Dunmore, County 
Waterford, it is said by Turton to have been procured. 
I. exigua, W. T. 
In the proceedings of the Zoological Society of London for 1835, I 
noticed this species as obtained in considerable abundance in September, 
1834, at Kilkee, on the coast of Clare, by Mrs. James Fisher of Limerick ; 
which information was furnished, along with specimens of the shell, by my 
friend Professor Harvey. In the 2nd edition of his Illustrations, &c., p. 
24, Captain Brown mentions this species as having been “ found by It. J. 
Shuttleworth, Esq., at Connemara, West coast of Ireland” — no year is 
named. In 1836 Mr. M‘Calla informed me that he had procured quan- 
tities in the last-named district in the autumn of 1835. 
I. nitens, Menke. 
This Ianthina, of which a number of specimens were found some years 
ago by my friend Professor Harvey (the well-known botanist), at Miltown 
Malbay, on the coast of Clare, is very distinct from the two known British 
species, I. fragilis and I. exigua , and was named I. pallida by Professor 
Harvey ; whether it be really a nondescript species is difficult to be de- 
termined. The nearest approach I find to it is the I. nitens of Menke, as 
described and figured by Philippi in his excellent Enumeratio Mollusco- 
rum Sicilise, but from this it differs in the columella being curved so as to 
present a somewhat rounded appearance, instead of being straight ; the 
lanthince, however, are subject to considerable variety. With the excep- 
tion of this character, it agrees well in form with the I. prolongata, Blain., 
figured in Payraudeau’s Moll, de Corse ; but the colour of this (dark blue) 
is very different from mine. Philippi, at the same time, quotes the I. 
prolongata in Payraudeau as identical with his, which in colour, “ pallid e 
violacea,” is similar to the Irish specimens, hence named pallida. This 
author again refers to what Blain ville figures as one of the forms of I. fra- 
gilis (Malac. tab. 37, bis. fig. 1), for a representation of his I. nitens. 
Philippi’s diagnosis of this species is “ Testa ovata, obtusa, anfractibus 
omnibus valde rotundatis, sutura profunda divisis, apertura semiovata, 
labro profunde exciso angulo columellae cum labro acuto.” 
Habitat, Sicily. Size of Irish specimens, 1 1 lines long, 8f broad. 
The genus Ianthina is in much confusion, which the present notes tend 
in no way to clear up ; they are only intended to introduce a third species 
of this attractive genus to the British Fauna. 
W. T. in Ann. N. H., vol. v. p. 96 (1840). 
Genus Scalaria. 
S. clathrus , Turt. 
Although not yet (so far as I am informed) taken in the Loughs of 
