— 159 - 



T. itnperforata, conico-elongata, tenuis, solidula, corneo- 

 virescens vel rufescens; apex acutus. An fr. 5 — 5'/ 2 

 convexiusculi, gradatim accrescentes, tenuissime striati, 

 sutura lineari disjuncti, ultimus maximus. Apert. parum 

 obliqua, subpiriformis; perist. simplex, acutum, margine 

 colurnellari sat incrassato. — Operc. tenue, corneo- 

 virescens. — Alt. ö 1 ,^ — 6, diarn. 3 mm. (Wattebled). 

 Hab. Thuan-an bei Hue (Annam). 



Lebt nach dem Autor 1. c. fast immer ausserhalb des 

 Wassers. Den Namen musste ich wegen A. elegans Paladilhe 

 ändern. 



3. Assiminea atomaria (Phil.). 



Mühlfeldt in sched.; Anton, Verz. Conch. Halle 

 1839 p. 52 (Paludina, nomen); Philippi, Abbild. Bd. 2, 

 Heft 5, 1846 p. 136. Paludina Taf. 2, Fig. 6 (Paludina); 

 Küster, Martini-Chemnitz Paludina, Nürnberg 1852 p. 56, 

 Taf. 10, Fig. 29—31 (Paludina); Frauenfeld, Wien. 

 Bot.-Zool. Ges. Bd. 13, 1863 p. 207 (c. var. minor) und 

 Bd. 14, 1864 p. 575 (= flavescens), p. 606 (flavescens) 

 und p. 664. 



Pfeiffer, Zeitsch. f. Malakoz. Bd. 3, 1846 p. 86 

 (Cyclostoma dubium), Bd. 4, 1847 p. 112 (Hydrocena dubia), 

 Martini-Chemnitz Cyclostoma, Nürnberg 1847—48 p. 182 

 Taf. 30, Fig. 4 — 6 (Cyclostoma dubium), Proc. Zool. Soc. 

 London 1851 und 1854 p. 308 (Hydrocena dubia), Mon. 

 Pneumonop. viv. 1852 p. 310, Suppl. I, 1858 p. 163 (Hy- 

 drocena dubia), Suppl. II, 1865 p. 177 (Omphalotropis dubia), 

 Suppl. III, 1876 p. 221 (Realia dubia); v. Martens p. 206; 

 Pease p. 166; Nevill p. 68 (c. var.). 



T. perforata, ovato-conica, tenuiuscula, rubello-cornea; spira 

 conica ; apex acutiusculus. Anfr. 6 convexiusculi, sub- 

 laevigati , ultimus juxta perforationem subangulatus, 

 spira vix brevior. Apert. subverticalis , ovalis , basi 



