PEACH : ON CAITHNESS MOLLUSCA. 227 



P. glaber. — Reiss, and near the Mill of Thrumster. Mr. 

 Jeffreys says : — " These are finer than usual, indeed very 

 nearly as large as some Mr. Bridgman found near 

 Norwich." 



P. spirorbis. — Same localities as the last. Jeffreys records it as 

 " from the Moray Firth district to the Channel Islands." 



*P. contortus. — River of Wick and Loch of Brickigo. 



^Limnsea peregra. — Wick, Ulbster, &c. 



L. truncatulus. — Southhead, Wick, &c. 



Ancylus fluviatilis. — Plentiful in many localities. Jeffreys 

 says, ' Everywhere from Aberdeenshire to the Channel 

 Isles.' I got this fine under similar circumstances that 

 Mr. Jeffreys did at Swansea, 'in an old quarry into which 

 no stream flows,' at Reiss. 



Arion ater. — In many localities. 



A. hortensis. — A pest especially in gardens. 



Limax flavus. — Several places. 



L. agrestis. — Another pest in fields, &c. I got also a very 

 dark one, hitherto considered a variety of the above, now 

 L. parvulus of Normand, a French conchologist. 



Succinea elegans. — In several places, but far from common. 



Vitrina pellucida. — In many localities. 



Zonites cellarius. — As the above. 



Z. alliarius. — Generally diffused, has a strong garlic-like smell. 



Z. nitidulus. — Wick, rare ; Jeffreys' range, 'Moray district to 

 Guernsey.' 



Z. crystallinus. — Whaligo, Wick, and Fenwick. Jeffreys's 

 range as above. 



Helix nemoralls var. hortensis. — In several localities, 

 generally on the sea coast. 



H. arbustorum. — On sandbanks between Castlehill and 

 Murkle, and on the links at Reay. Jeffreys says, ' Appar- 

 ently not ranging further north than the Hebrides.' 



H. rotundata. — Several places. 



Pupa umbilicata. — As the above. 



