204 
The Irish Nainralut. August-Sept., 1914. 
made up of about 28 rows. The lateral plates bore at 
the top a hooked tooth which distinguished them from 
the laterals of G. nodosa which are merely sinuate at top. 
Idalina aspersa (Aid. & Hanc.) 
Idalia aspersa. 
Rare. One specimen 22 mm. in length dredged on 
oozy bottom in 8 f., Dalkey Sound, July, 1908 : Colgan '09. 
The radula of this specimen was found to have 35 rows 
of bright yellow teeth. Alder and Hancock give only 
21 rows, but the specimen examined by them was probably 
a much smaller one of 12 mm. The labial armature was 
closely similar to that figured by Sars for Idalia pnlchella 
(Moll. Reg. A ret. Norveg., Tab. xiv.) 
Ancula cristata (Alder.) 
Rare. Dublin Bay (Mr. Alder) : Thompson '44. One 
specimen 19 mm. long dredged in 2 f., Malahide, July, 1908 : 
Colgan '09. Two specimens, the longest 5 m.m. long, 
dredged in 14 f. off Skerries, July, 1913, one with a 
monstrous forked rhinophorc ; one specimen in 10 f. off 
Bullock, August, 1913 : N.C. Also dredged in Lambay 
Deep off the Dublin coast, but outside of the county marine 
limits, in 39 f. : Farran '09. 
Triopa claviger (Miiller). 
Rare. A single specimen 11 mm. in length dredged 
in 2 f. in the channel between Colt Island and Church 
Island, Skerries, July i8th, 1913 : Colgan '13A. 
The radula was made up of about 45 rows with 9 lateral 
plates in each half row ; and the auditory capsules contained 
25 ovate otoliths. 
Sandycove, Co. Dublin. 
