160 
HYDROCENA §. 2. 
Hydrocena oblonga Pfr. in Proc. Zool. Soc. 1854. p. 305. n. 6. 
— — H. et A. Adams Gen. rec. Moll. II. p. 299. 
Habitat in insulis Marquesas. 
16. Iff. pyramis Pfr. 
T. subperforata, oblongo - conica , solidula, irregulariter 
rugata, epidermide fulva obducta ; spira convexo-conica, acuta ; 
anfr. 5Va convexiusculi , ultimus 2 / 5 longitudinis subaequans, 
obsolete angulatus, basi planiusculus ; apertura vix obliqua, 
angulato-ovalis ; perist. simplex , rectum , margine columellari 
recedente, calloso, subappresso. — Long. 6, diam. 4 mill. Ap. 
2% mill, longa, 2 lata. (Mus. Cuming.) 
Hydrocena pyr amis Pfr. in Proc. Zool. Soc. 1854. p. 306. n. 11. 
— — H. et A. Adams Gen. rec. Moll. II. p. 299. 
Habitat Singapore. 
17. Iff. fattaroiiisig Pfr. 
T. obtecte perforata, turbinata , tenuiuscula, confertim 
striata, rubella; spira conica, acuta; anfr. 5 convexiusculi, 
ultimus spira paulo brevior, basi parum convexus; apertura 
fere diagonalis, subsemicircuiaris, intus aurantiaca; perist. sim- 
plex, rectum , margine columellari calloso , diffuso. — Operc. 
paucispirum, rubellum. — Long. 3y 2 > diam. 2V 2 mill. Ap. 
l 2 / 3 mill, longa. (Coll. Nr. 337.) 
Cyclostoma Cattaroense Pfr. in Arch. f. Naturg. 1841. I. p. 225. 
— _ Chemn. ed. nov. p. 184. n. 206. t. 30. f. 16 — 18. 
Paludina Sirhii Parr., F. Schmidt in sched. 
Hydrocena Sirkii Parr . in sched. 
_ Cattaroensis Pfr. in Zeitschr. f. Malak. 1847. p. 112. 
— — Pfr. in Proc. Zool. Soc. 1854. p. 305. n. 3. 
— — H. et A. Adams Gen. rec. Moll. II. p. 299. 
Realia Cattaroensis Gray Catal. Cycloph. 1850. p. 63. 
Hydrocaena Cattaroensis Kiist. in Chemn. ed. nov. I. 21. p. 81. t. 13. 
f. 28—35. 
— — Trosch. Gebiss d. Schn. p. 83. t. 6. f. 1. 
Habitat prope Cattaro Dalmatiae. 
* 
18. mimitisslma Sow. {Pfr. in Zeitschr. f. Malak. 
1847. p. 112. — Proc. 1854. p. 305. n. 1 . — Ad. 
Gen. p. 299. — Cyclost. minuliss. Sow. — Lepto- 
poma? minutissimum Pfr. Pneum. n. 29. — Realia 
minutissima Gray 1850.) Mon. p. 118. 
