rsen opere E 
Testaceous Pneumonobranchous Mollusca of Great Britain.” 509 
15 bis. rufilabris. Jeffreys. 
Animal testaceum aut griseum, superné croceo-verru- 
cosum. Tentacula longa flexilia. 
Testa subdepressa, subglobosa, glabra, nitidiuscula, cro- 
ceo-pallescens. Anfracius 5—6. Apertura subro- 
tundo-lunata, margine rufo, limboque sz pé eburneo 
instructa. 
Long. 0.25.—Diam. 0.5. 
H. Carthusiana. Miiller. 
H. Carthusianella. Drap. p. 101. pl. vi. f. 31, 32. Fér. 47. 
Var. a. minor, convexior. 
H. (Helicella) Olivieri. Fér. p. 47. 
Mr. J. F. Stephens (who presented me with specimens) says 
he found it many years ago in great abundance about Dover ; 
and subsequently at Brighton and other parts of that line of 
coast. Little Hampton, Sussex: Mr. J. E. Gray. 
Dr. Leach, in his admirable (though as yet inedited) work 
on the British Mollusca, says that ** Mr. Gibbs discovered 
this species to be an inhabitant of Britain in 1814, and com- 
municated it to Montagu, who named it in his MSS. H. 
Gibbsii.” 
It was, I believe, first publicly recorded as British by Baron 
de Férussac in his Concordance Systematique pour les Mollusques 
terrestres et fluviatiles de la Grande Bretagne. 
I did not notice this species in the former part of my Synopsis, 
from a supposition (perhaps not altogether unfounded) that it 
had been naturalized in this country by an importation from 
the opposite coast of France. Certain it is that on a late visit 
to Dover, I could not, after a long and strict search, find any 
traces of its having inhabited that neighbourhood. The above 
description of the animal has been taken, faute de mieux, from 
specimens collected by myself in Normandy. 
H. concinna, . 
