1S98.] Standen,— ■A1??/?;2«?'^ Conference. — Mollusca. 225 



we got into communication with one of the boatmen, Pat Coffey, who 

 had been up to the lake some 13 years ago, and having engaged his 

 services to act as guide, and carrier of our impedimenta, and provided 

 with a written permit to traverse the ground, we started by car for the 

 tunnel on the Kenmare road. Dismounting there, we ascended the 

 crest of the mountain with but little difficulty, halting at times 

 to enjoy the magnificent prospect of the lakes, and the heights behind 

 them. On reaching the level plateau a small wood was traversed, 

 and a short walk brought us to the shores of the lake. Almost 

 immediately two specimens were found on a stone in the water. Pat, 

 after a while, hurried up with another. Over two hours' diligent search, 

 under a blazing sun, and with the constant attendance of hosts of cleggs 

 (" Kerry mosquitoes '"), resulted in the capture of three more specimens. 

 These, with two dead shells, were all we were able to find. A few 

 egg-masses were seen, each containing about 20 eggs. Regarding both 

 the lake and its remarkable occupant, many erroneous statements have 

 been made, which it may be well to set right. The lake is called on 

 the Ordnance map ' Crincaum.' This name Pat Coffey did not know at 

 all. He assured us that it was locally known as Cromaglaun or ' the 

 shell' lake. Mr. Bendall, in the lournal oj Conchology for July, 1885, gives 

 its dimensions as 'apparently not more than 20 feet across.' In the 

 following October, Dr. Hill Evans stated that ' 20 yards would be much 

 nearer the mark.' We carefully paced the tarn, and found it to be about 

 130 yards long and over 100 wide. The water area will considerably 

 exceed this in wet weather. As regards the animal, Jeffreys, in his 

 'British Conchology' gives no information beyond the wholly 

 erroneous statement that the mantle covers the shell almost completely, 

 as in Aviphipeplea. When we reached the hotel with our treasures, they 

 were emptied into a vessel of clean watei and carefully watched, and 

 some notes made on the character of the animal which may prove of 

 interest. Colour, uniform olive green, except the mantle, which is 

 mottled with black. Tentacles broad and thin, presenting a slight wide 

 sinuation behind the tip ; eyes sessile, small, placed a little in front of 

 the middle of the base of the tentacles. Foot truncated in front, some- 

 what pointed behind. The mantle is wholly within the shell, and never 

 reflected over its edge so as to cover the shell. The animal is active in 

 its movements, and floats sole upwards with ease. In this position, as 

 well as when crawling, it frequently pauses and rotates the shell rapidly 

 from side to side tM'O or three times." 



L. percgra, Miiller. — Typical examples near Drumanassig Bridge 

 (Chaster). On mud of Sheen and Roughty Rivers a small form almost 

 identical with var. Boissyi was common. This variety occurs generally 

 throughout the district. Var. lanisfrn occurred near Loo Bridge and 

 Lower Lake, Killarney (C. & C.)- 'The species is not at all plentiful in 

 most of the lakes and streams. 



L. palustris, Miiller. — Typical at Loo bridge. A small thin form near 

 Galwa^^'s Bridge (Welch). Small specimens on road to Glengarriff 

 (Hardy). Fairly common in Glena Bay, Lower Lake of Killarney, but all 

 the specimens were decollate (C. &. C). 



