114 C. A. Westerhmd, Synopsis Molluscorum Extramarinor. Scandin. 



Forma filocinda W. (Expose crit., 1871), t. carina expressa 



filiformi; utrinque sulco impresso terminata. 

 Forma ecarinafa W. 1. c, t. anfractii ultimo aperturam versus 



tereti, carina evanescente. 

 Forma labiata W. 1. c, t. apertura intus labiata, labio albo, 



nitido, sat valido. 

 Forma catina W. (Exk. Fauna, 188-4;, t. supra subplaiia, sub- 



tus plus minusve concava. 

 Monstrositates multse (ut a. t. supra concava, subtus convexa; 



/9, t. anfr. ultimo descendente, apertura centro adnatse; y- 



t. anfr. passim sejuactis, ultimo demum libero, etc.), se- 



quentes quam maxime memorabiles: 



1. T. p3'ramidalis, rufobrunnea, anfr. 6, lineares, superne 



truncati, ultimus fere acutangulus, convexus, apert 

 circinnata, marginibus conjunctis, columellari ad um- 

 bilicum profundum et apertum late reflexo; alt. 7, 

 lat ad basin 5 mm. — Suec. ad Ringsjon in Skane. 

 Woodward Manual of Moll. f. 97 oj)tima. 



2. T. pyramidalis, squalida, cinerea, anfr. 5, convexi, 



sibi invicem fere perpend iculariter impositi, 4 & 5, 

 in ipso apice depressi, apertura circinnata ac cent- 

 rum perforatum; 2.1ong. 2-/3, lat. IY2 lin.^ — Dania 

 in fossa limosa ad Frederiksdal (O. Morcb). Nerita 

 contorta Mlill. in Verm. Hist. 



PI. carlnatus Miill. (Verm. Hist. 11, 1774). T. calcarea, pallida; 

 anfr. 5, celeriter accrescentes, ultimus dilatatus, extus com- 

 pressus, acute carinatus; apertura anguste ovalis, acute 

 angulata. Lat. 10 — 16 mm. 



Rah. Siiecia in Skane fere ubique, in Blekinge tantum- 

 modo in maxime occidentali parte (in lacu Wesan ad Gammels- 

 torp et in Sissebiick), Smaland (Jonkoping, Westraby, Romelsjo), 

 Oland (Resmo), Gotland (Dalhemsa par. Lojsta), Ostergotland 

 multis locis, Westergotland (in lacu Kopparsjon par. MoUtorp), 

 Nerike (Skeback et in Markkarret, Mellosa et ad Broby par. 

 Viby), Stockholm (in lacu Trehorningen par. Briinnkyrka, Nacka), 

 Upland (ad Upsala), Dalarne (par. Gustaf et ad Siiter), Helsing- 

 land (ad Bollnas, Bjorktjarn). — Dania vulgaris. — Fennia ad 

 Jalguba in Karelen, Raima in Kuopio et Riistavesi in stagno 

 Valisalmi (K. M. L.). 



Forma mimmularis Morch {Sjn. Moll. Dan., 1864;), t. compres- 

 sima, foliacea, insequaliter flexa. — Dania rarior. 



