Acta Societatis pro Fauna et Flora Fennica, XIII, n:o 7. 83 



Gen. Succinea Drap. 



T. anfradubus 3 — 4, ultimo maximo, convexo v. ven- 

 troso, apertura ovali. 



1. Neritosioma Klein. T. anfractu ultimo convexo v. ven- 

 troso, apertura late ovata, dimidiam testce longe superante. 

 (Maxilla ficscohrunnea, tridentata). 



S. putris Lin. (Syst. Nat. X, 1758, Helix). T. ovalis, succinea, 

 tenuis, spira late conica. acuta; anfr. convexiusculi, pen- 

 ultimus subtus convexiusculus, ultimus supra a sutura 

 fere regulariter convexus, sutura levis, demum stepius 

 forte profundeque descendens. Long. 15 — 17, lat. 7—9, 

 apert. 1. 10 — 11, lat. 7 mm. 



Hah. Suecia ubique usque in Lule Lappmark (ad Qvick- 

 jock : H. Boheman). — Now. usque in Ostfmmarken (ad Alten- 

 fjord sub 70° lat. bor. invenit J. E. Z.). — Dania frequens. — 

 Fennia vulgaris usque ad Patsjoki in Enare Lappmark. 



Forma gigantea Bourg. (Mon. Succ. fr., 1877), t. acute elon- 

 gata, vix ventricosa, striata, ssepius rubra, apertura piri- 

 formis, sursum attenuata, basi rotundata; long. 19 — 21, lat. 

 11 — 12 mm. — Suec. in Oland CTveta), — Fennia ad Jynkka 

 (J. A. Sandman), mut. pallida in Aland, mut. rubra in Hog- 

 land (Mus. Helsingf.). — S. putris v. grandis Haz. 



Var. limnoidea Pic. (Moll. Somme, 1840, f. Bourg. = clessi- 

 siniana Haz,) forma gotlandica W. (Fauna Binnenconch. V, 

 1885): t. longa, recta, acute conica, rugoso-striata, perso- 

 lida et crassa, anfr. i, planati, apert. verticalis, ovalis; 

 long. 25 — 27, lat. 11 — 12 mm. — Suecia in Gotland (ad 

 Kopparviksdam et Etelhem). — Dania ad Bornholm (ad 

 Stammershalle: Coll. Olev., et in Moens klint: H. L.). — 

 Fennia in Aland, Hogland, Satakunta, Ylane (Mus. Hel- 

 singf.). 



Var. charpentieri Dum. & Mort. (Cat. Moll. Sav., 1858): t. ovata, 

 irregulariter rugulosa, spira brevi, late conica, anfr. 3 (1. 

 minimus, 2. brevis, convexus, ultimus magnus, ventrosus); 

 long. 15, lat. 10, apert. long. 11, lat. 7 mm. — Suecia in 

 Bleking.e (Ronneby etc.), ad Boras et in Upland (ad Jiirfva : 

 V. L.). 



Var. ferussina Moq.-Tand. (Hist. Moll. Fr., 1855): t. parva, 

 obesa, ovoidea, tenuis fragilisque, spira brevis, late conica, 

 anfr. 3, superi minuti, obliqui, ultimus supra aperturam 



