78 



HARDWICKE'S SCIENCE-GOSSIP. 



Unio margaritifer. Extremely abundant in the 

 Wye, especially near Hereford. 



Anodonta cygnaa. Common. The largest I have 

 measures 6| X 3J in. The immature specimens seem 

 somewhat to resemble A. anatina. 



Anodonta anatina. Local : the Wye at Symond's 

 Yat, abundant : also, but very rarely at Hereford. I 

 have one very curious specimen, which has two teeth, 

 one on each valve, about the centre of the shell. 



Dreissena polymorpha. Formerly very abundant 

 in the canal at Hereford. 



Neritina fluviatilis. Very local. Abundant in 

 Wye at Symond's Yat. 



Paludina co7itecta. " Hereford,'" De Boinville. 



Paludina vivipara. Formerly abundant in the 

 Canal. 



Bythinia tentaculata. Very common. 



Valvata piscinalis . Common : Canal : Staunton-on- 

 Wye, etc. Frequently on Caddis-cases. 



Valvata cristata. Rare : Tupsley. On Caddis-cases. 



Planorbis nitidus. By no means abundant : 

 Devereaux Park : Bartestre. 



Planotbis nautileus. In a shallow pond at Bulling- 

 ham, on oak leaves (in a similar situation near 

 Oxford). 



Planorbis albus. Common. Often on Caddis-cases. 



Planorbis parvus. Locally abundant : Burton 

 Court, near Leominster. 



Planorbis spirorbis. Abundant in a brook at Moccas, 

 with many sub-scalariform specimens. 



Planorbis vortex. Not uncommon : the canal : 

 Tupsley, etc. 



Planorbis carinatus. Not very common : the 

 Canal : Tupsley. 



Planorbis complanatus. Common : I have observed 

 it eject red-coloured fluid on being put in boiling 

 water. 



Planorbis corneas. " Hereford," De Boinville : 

 "near Leominster" (?) : Hereford canal, but only 

 fragments. 



Planorbis contortus. Very common. 



Physa hypnorum. Formerly very abundant in one 

 pond near Hereford, but fhe late drought seems to 

 have destroyed it. 



Physa fonlinalis. Common : var. in/lata at 

 Bullingham. 



* Limnaa peregra. Abundant : a very ' ' palustroid " 

 variety near Hereford : var. labiosa not uncommon. 



Limnaa auriatlaria. Two distinct forms ; one, 

 smaller and squarer, very abundant at Burton Court, 

 near Leominster : the other larger, flatter, in many 

 cases labiate, many others, again, tending towards 

 L. peregra, with which it formerly abounded in 

 Hereford Canal. 



Limnaa stagnalis. Two distinct forms ; one, very 

 abundant in Hereford Canal, slender, thin, and small, 

 whereof I have found the mons. scalariforme ; the 

 other, at Tupsley, much larger, stouter and finer. 



* Limnaa truncatida. Common. Very abundant 



in the Wye at Hereford : var. elegans (but usual 

 colour) in the Frome. I have found it on the 

 Ffwddog on the Black Mountains in very tiny rills : 

 doubtless these are the hosts of the sheep-fluke. 



Limnaa glabra. Rare near Tupsley : (very common 

 near Hay, just over the Herefordshire border). 



* Ancylus fluviatilis. In nearly every stream. 

 Ancylus lacustris. Widely distributed, but nowhere 



very abundant. 



[Testacella haliotidea. Very rare: " Burghill," 

 T. A. Chapman. 



* A rion ater. Very common. 



* Arion hortensis. Very common. 



* Arion bourguignati. 



* Amalia gagates. 



* Amalia marginala. 



* Limax agrestis. Common. 



* Limax maximus. Not very common : Doward 

 Hill. 



* Limax arborum. Not very common : Doward 

 Hill]. 



Succinea putris. One of our commonest and most 

 widely distributed species. Sometimes near to S. 

 virescens on horse-radish at Ross, vide Helix rufescens 

 and H. hortensis. 



Succinea elegans. Very common. I have seen 

 this species floating. 



* Vitrina pellncida. Common. Seems more abun- 

 dant in spring. Does it ibury itself to grow during 

 the summer and autumn ? Very little, if at all, 

 affected by the cold. 



* Zonites cellarius. Very common. 



* Zonites alliarius. Rather rare : Ross : Llanwarne. 

 Zonites glaber. Not very common. 



* Zonites nilidulus. The commonest species ; also 

 var. nitens. 



* Zonites purus. Common. Also var. margaritacea. 

 Zonites radiatulus. Under bark on willow-trees. 



Doward Hill. Dormington. 



* Zonites crystallinus. Not uncommon among dead 

 leaves. Rotherwas, Backbury Hill. 



Zonites fulvus. Not uncommon among dead leaves. 

 Rotherwas ; Backbury Hill. 



Helix aculeata. Not uncommon. Among dead 

 leaves, especially on stones among dead leaves. 

 Backbury Hill ; Rotherwas: Dormington : Breinton. 



* Helix aspersa. Very common. 



* Helix nemoralis. Very common ; also vars- 

 castanea (especially on the limestone), carnea, libellula, 

 bimarginata (rare). 



* Helix hortensis. Very common, but apparently 

 not on the limestone ; with vars. albina (on horse - 

 radish, vide H. rufescens), pallida incamata, lutea 

 (very common), arenicola. 



* Helix arbustorum. Not uncommon : Doward 

 Hill : near Hereford. 



* Helix Cantiana. 



Helix rufescens. Very common. Apparently not 

 on the limestone ; with vars. alba (very common ; the 



