40 Proceedings of the Royal Irish Academy, 
Another similar haul was made in 100 fathoms, thirty-five miles from 
coast. The trawl was out at 3.30 p.m. in 110 fathoms, forty- three 
and a-half miles from the Durseys. In addition to the above, we 
obtained one Asterias rubens, one Luidia sarsii, one Astropecten irre- 
gularis, and two Holothuria irernula — one being 12 inches long and 9^ 
in circumference. Polynoe (?) and Caprella (?) were found associated 
with Spatangus raschi. Six specimens of the above-mentioned nodu- 
lated sea-anemone were trawled, two of which had grown round a 
small JS'atica, tenanted by Eupagurus cuanensis (?), and the base of the 
other two formed a deep cup with a constricted orifice, which was 
filled with sand, and thus constituted a sand anchor of a type new 
to us. Of the eight large specimens of this form {Actinauge richardi)^ 
five possessed this modification, two had grown round a small Natica- 
shell, and one was attached to a Pinna- shell. 
The next trawling was in 214 fathoms, fifty miles from land, and 
several specimens of the previously mentioned species of Dorocidaris, 
Echinus, Spatangus, and Holothuria, and Pontaster tenuispinus came 
up along with Pandalus annuUcornis, and the rare Munida rondeletii. 
The trawl was again shot about 8 p.m. in 265 fathoms, fifty-seven 
miles west, half -south of Dursey Head, and we were rewarded by obtain- 
ing a couple of very fine adult specimens of Cassidaria tyrrhena. The 
shells had a perfect and very thin outer lip, and a large delicate wing 
projecting from the inner lip along the siphon, almost at right angles 
to the long axis of the shell. Extreme length of shell, 93 mm. ; 
greatest diameter, 61 mm. The animal was of a uniform, delicate 
pink colour. Mr. E. A. Smith, of the British Museum, gave me the 
following information: — "There is no doubt that your new British 
shell is a well-known Mediterranean and Atlantic species, which is, 
like most shells, known under several names. It is the Cassidaria 
rugosa, Linn. = C. tyrrhena, Chemn., and by some authors considered 
a var. of C. echinophora, Linn. The name most commonly applied to 
it is C. tyrrhena. Fragments of it were obtained by the ' Porcupine ' 
expedition of 1870, in lat. 48° 6' JS"., and long. 9° 18' W., at a depth 
of 539 fathoms. This information has not yet been recorded ; but when 
I complete Jeffreys' Peport on the MoUusca of that expedition, I shall 
mention it." 
Mr. W. H. Baily, of the Geological Survey of Ireland, on my 
communicating to him the discovery of this species, kindly lent me 
a couple of sketches, and a memorandum he had taken of a Cassidaria 
in the collection of the Eev. G. Basil Anderson of Dingle. 
On my writing to him about this shell, Mr. Anderson very kindly 
