1907- Welch & Stklfox.— Cork Conference. — Mollusca. 283 



Planorbis contortus, L.— Common in the River Lee at The Gearagh 

 and also at Carrigrohane. Sparingly also at Blarney Castle. 



P. albus, Miill. — Taken sparingly at The Gearagh and in Lough Allua, 

 but was common at Carrigrohane and in the Lough of Cork. 



P. crista, L. — Common in a small pond near Youghal bridge, Carrig- 

 rohane, and Lough of Cork. Most of the specimens taken by us 

 were var. nautileus. 



P. fontanus, Lightfoot. — Fairly common at Carrigrohane, in a pond 

 in the Rock Close at Blarney, and in the Lough of Cork. 



Ancylus fluviatilis, .Miill. — Occurred abundantly in the Lee at 

 Carrigrohane. Also found at Lough Allua, Kinsale, and Gougane- 

 barra. 



Acme Iincata, Drap. — Rather large specimens (all var. alba) were 

 found fairly commonly in the woods at Rostellan, while the type only 

 was taken in moss shakings from Glendine (Standen). 

 Bythinia tentaculata, L. — Apparently not common, and was only 

 noted at Lough Allua (lake rejectamenta), and in Rostellan Lake. 



Hydrobia ulvse, Penn. — In company with Melampus bidentatus at Ros- 

 tellan, and with the next species at Glendine Castle (River Black- 

 water). 



H. Jcnkinsi, Smith. — Exceedingly common in the marshes at Youghal 

 and in the drains running into Rostellan Lake. Also seen in the 

 Blackwater at Glendine Castle. In a drain at Rostellan surrounded 

 by trees a very small, slender form, with deep sutures, was taken, 

 which from the free lip was certainly fully grown. 



Valvata pisci nails, Miill. — This species was taken in the neighbour- 

 hood of Cork and Rostellan, but not elsewhere. 



V. cristata, Miill. — Like V. piscinalis and Bythinia tentaculata, this 

 usually common species was quite scarce, and was only taken at 

 Youghal (Balfour Browne), Blarney Castle, and in the Lough of 

 Cork. 



Sphaerium corneum, L. — A few large dead shells collected on 

 the shore of Blarney Lake (Milne) were our only record for this 

 species. 



Pisidlum pulchellum, Jenyns.— This handsome little bivalve was 

 taken at Youghal. 



P. fontinale, C. Pfr.— Lough of Cork. 



P. milium, Held. — Carrigrohane and Ballinspittal. 



P. oPtusale, C. Pfr.— Ballyphehane Bog. 



P. pusillum, Gm el.— Ballyphehane, Carrigrohane, Lough Allua, and 

 Rostellan. 



Unio margaritifer, L.-The Pearl Mussel has been taken by Mr. 

 Phillips in the Rivers Lee and Blackwater, as well as some of their 

 tributaries. 



The above list contains 81 species, which is larger than that 

 of any previous Conference. 



