55 



L. peregra. Mull. Very common. May be found in nearly every lake, 

 stream, and ditch. There are several different forms of this species 

 besides those mentioned below, which I beUeve may be named 

 varieties that I am not yet acquainted with. One specimen, taken 

 in a ditch near the Water Works, has a remarkably reflected outer 

 lip. A small strong variety occurs in the Eden and Petteril. 

 var. lacustris. Leach. Derwentwater. 

 var. ovata, Drap. Numerous and very fine in ditches near the Water 



Works, 

 var. decolata. Pond in the Willow Holme. 



L. palustris, Mull. Eickerby Beck ; Thurstonfield Lough ; and ditches 

 near the Water Works. I have taken a small shell with a purplish 

 mouth in a ditch in the Abbey Holme, which seems to approach 

 the var. tincta. ( Jefifr. ) 



L. truncatula. Mull. Common. In the Eden ; at Blaithwaite ; and very 

 abundant on the mud at the edge of ditches near the Water Works 

 and of Eickerby Beck. I have found a shorter shell, with more 

 swollen whorls, and so much coated with iron as to be nearly black, 

 in a ditch in the Abbey Holme. 

 var. minor. On pieces of limestone in the Roman vallum near Laner- 

 cost, and also on pieces of limestone in a quarry at Bothel. The 

 stones are lying on the damp ground, and there is no water in 

 either locality. 



L. glabra, Mull. I have only taken this shell in a ditch at Corby, where it 

 is abundant. The specimens are fine, but are aU decollated. 



Ancylus fluviatilis, Mull. Common. In the rivers Eden, Caldew, Roe, 

 Petteril, and Irthing, attached to stones. The specimens are fine 

 and plentiful 



A. lacustris, L. The only locality I know for this shell is a pond at Corby, 

 where it is to be found in profusion sticking to dead leaves. 



TERRESTRIAL MOLLUSC A. 



Fam. Limacidai. 



ArioH ater, L. Very common. May be found nearly everywhere, especially 

 just before or after rain. Black is the commonest colour ; and the 

 young ones are pale green. In Scotland I liave met with this 

 mollusk not far from the summit of Ben Lomond, near a spring, on 

 a very dry, hot day. Stanwix, Grinsdale, Wetheral, Blaithwaite, 

 &c. 



A. hortensk, Fer. Common at Stanmx and Blaithwaite. 



