I9IO. Notes. . 241 



Some records of Land and Fresh-water Mollusca from the 

 Counties Roscommon and Longford. 



Roscommon and the adjoining county of Longford having been so 

 little worked by concbologists, I took the opportunity of spending two 

 days at Athlone in April of tbis year in order to add to tbe very scant 

 list of species recorded from these two counties. . 



Co, Roscommon:— The district covered was that lying between 



■Atblone and Kiltoom on the west shore of Lougb Ree. In tbe drains 



close to Atblone Linutcea peregra, L. faliistris^ L. stagiia/is, L. truncatulay 



.Physa fontinalis, Aplexa hypnoniin^ Planorbis marqtnatus, P. conic it us, Valvata 



piscinalisy V, cristata, Bythinia tentacidata and Sphieriinn cornetim were all 



common, while no sign of any species of Pisidium was seen. Planorbis 



carinatus was taken in tbe canal, but not in tbe drains. All tbe above 



•fresb-water species also occurred in tbe roadside drains towards Kiltoom, 



with tbe exception of Planorbis carinatus^ and tbe following additional 



species were taken : — Snccineaelegans^ Ahcylus Jinviatilis (Butterbay River), 



■Planorbis crista^ P. vortex, and Pisidinin niilinin and two otber species of 



this difficult genus. In a wood near Kiltoom slugs were particularly 



abundant, Agrioliviax agrestis, Liviax marginatns, L. inaxiviiis^ L. flavns, 



Arion ater, A. circnmscriptus, A. intermedins^ all being observed, wbile 



w^TiX^x h.\X\\ow^ Agriolimax Levis and Arion hortensis were also seen. 



Tbe land species were typical of tbe central plain, tbe xeropbiles being 

 well represented, and tbe "western " or woodland species almost absent, 

 as will be seen by tbe following list : — Vitiina [pellncida, Hyalinia cellaria 

 {^Vitrea hibernica of Kennard), H. nitidnla. H. cryslallina, H.fidva, H. nitida. 

 Helix rolnndatay H. rnpestris, H. pidchella ( Vallonia excent/ica, Sterki), H. 

 hispida^ H. rnfcscens, H. neoioralis, H. aspersa. H. ericetornm, H. intersecta, H. 

 virgatay. H. aeitta, Cochlicopa lid^rica, Pupa cylindracea, Chutsilia bidentata and 

 Vertigo edeninla. 

 . Co. LrONGFORD : — Cycling till I crossed tbe boundary between West- 

 meatli and Longford at Tang Bridge and then collecting at intervals as 

 far as Saint's Island, on tbe eastern shore of Lougb Ree, I was able to 

 accumulate quite a large number of land species, and by returning bome 

 tbrough Ballymabon, a sbort visit to tbe Royal Canal at Pake's Bridge 

 gave me a fair list of fresb-water ones. 



Close to tbe county boundary at Tang Bridge, Agriolimax agrestis, 

 Arion ater^ Vitrina pellucida, Hyalinia cellaria {Vitrea hibernica Kennard), 

 H. nitidnla, H. nitida. Helix rnpestris, H. rn/escens, H. hispida, H, ericetornm 

 H. nemoralis, H. aspersa, Cochlicopa lubrica, Pnpa cylindracea, Clansilia bidentata 

 and Succinea putris were found. Tbe last species was particularly fine 

 and darkly coloured and was hibernating at tbe base of a dry stone wall 

 many yards from tbe nearest water. 



Along tbe banks of tbe River Inuy at Sbrule Bridge Agriolimax laevis, 

 Hyalinia fidva. Helix rotundata, H. intersecta, H. pidchella {Vallonia excen- 

 trica, Sterki), Carychium minimum, Succinea elegans, Limncea palustris and 

 Z. truncatula were added to tbe list, and in a marsh west of Castlecore, 

 Limnaa peregra^ Valvata piscinalis and Sphcerium cornenm. 



