of British MoUusca. 331 



greatly multiplied so-called species in this genus, regard //. 

 nitens as distinct from //. nitidula, and Ilchaii as a variety 

 of it. 



Fani. 3. Helicidae. 



Genus 1. AiaoN, Ferussac. 



198. Arion ater (Linn.). 



Var.^(a'W5 (Miillcr). 



199. Arion hortensia (Ferussac). 



Genus 2. Geomalacus, AUman. 



200. Geomalacus maculosusy Alluian. 



Genus 3. Helix, Linnd. 



Subgenus 1. PtTNCTUM, Morse. 



201. Helix pygmceaj Drap. 



Subgenus 2. Patula, Held. 



202. Helix rotundata, Miiller. 



203. Helix rupestris, Studer. 



Subgenus 3, Valloxia, Risso. 



204. Helix pulcJiella,Uu\[ev. 



Var. costata, Miiller. 



Subgenus 4. AcaxN'thinula, Beck. 



205. Helix aculeata, Miiller. 



206. Helix lamellata^ Jeffreys. 



Subgenus 5. Gonostoma, Held. 



207. Helix obvoluta, Miiller. 



Subgenus 6. Chilothema, LeacU. 



208. Helix lapicida, Linn. 



Subgenus 7. Frtjticola, Held. 



209. Helix hispida, Linn. 



Var. 1. concinna, Jeffreys. 

 Var. 2. depilata, Pfr. 



