100 C. A. Westerlundy Synopsis Molluscorum Extramarinor. Scandin. 



vulgaris. — Norv. tota usque ad 70° lat. bor. — Dania et 

 Fennia ubique. 



Var. intermedia Mich. (Compl., 1831): t. elongato-fusiformis, 

 tenuis at firma, corneo-flavescens, spira elougata, sat gra- 

 cilis, acuta, anfr. convexi, ultimus infra sensim attenuatus 

 sutura antice obliqua, apert. oblongo-ovata, marg. exter. 

 leviter curvato, columella curvatula, reflexa, adpressa; long. 

 20, lat. 10—12, ap. Ig. 13 mm. — Suecia in Upland (V. L.). 

 — Dania ad Besserup (Steenbuch). 



Var. surcula mh.: t. rimata, elongato ovata, fusco-cornea, nitida, 

 firma, dense striata, spira elongata, late conica, obtusi- 

 uscula, anfr. tres ultimi fortissime accrescentes, convexi, pe- 

 nultimus magnus, ventrosulus, ultimus ventricosus, infra 

 sat celeriter et breve attenuatus, rotundatus, sutura descen- 

 dens, apertura oblongo-ovata, superne obtusa, margine ex- 

 teriore ab insertione leviter arcuato, basali rotundato, co- 

 lumellari superne dilatato et reflexo; long. 17 — 25, lat. 11 

 — 14, ap. long. 10 — 15, lat. 8 — 11 mm. — Suecia in Jemt- 

 land (ad Kail: E. N.). — Fennia ad Mjatusova prope flu- 

 men Svir et ad Seurujarvi (Mus. Helsingf.). 



Var. fontinalis Stud. ap. Charp. (Cat. Suisse, 1837), forma fen- 

 nica mh.: t. elongato-ovata. tenuis, cornea, spira producta, 

 basi lata, anfr. convexiusculis. saperioribus tribus minutis, 

 ultimo a sutura convexo, basi sensim longeque attenuato, 

 apert. ovata, basi late rotundata, marginibus sat curvatis, 

 columella acuta; long. 24 — 25, lat. 14—15, ap. Ig. 19, lat. 

 11 — 13 mm, — Fennia in Kuopio in sinu Pitkalaks et ad 

 Levais * et Kallavesi: Mus. Helsingf). Forma typica (in 

 Helvetia et Bavaria) suturam autice obliquam et anfractus 

 sursum depresso-attenuatos habet, talem apud nos non vidi. 



Var. vulgaris C, Pfr. (Naturgesch., 1828): t. minor, conico- 

 ovata, tenera, argute striata, pallide v. rufo-cornea, spira 

 brevis, acuminato-conica, anfr, ultimus medio sat conve- 

 xus, sursum attenuatus, apert basi rotundata, superne an- 

 gustata, columella pauUo curvata, margine exteriore leviter 

 arcuato; long. 10—15, lat. 8—10, ap. Ig. 7—10 mm. — Pas- 

 sim. 



Var. sericina C. G. W. ap. W. (Fauna Binnenconch. Suppl., 

 1890): t. ovata, pertenuis et fragilis, sericina, densissime 

 striatula, et plicatulo-striata, flavido-brunnea, spira perbre- 

 vis, anfr. ultimus superne et medio perconvexus, infra at- 

 tenuatus, apert. infra longe producta, margine exteriore 

 forte arcuato, columella curvata; long. 12—14, lat. 9—10, 



