t56 HYDROCENA §. 1. 



Hydrocena Bridgesi Pfr. in Proc. Zool. Soc. 1854. p. 305. n. 4. 



— — //. et A. Adams Gen. rec. MoU. II. p. 299. .». 

 Habitat in Valclivia; sub lapidibus in locis humidis legit Th. 

 Bridges. 



3. Ifl. cornea Pfr. 



T. subperforata , ovato-conica, soHdula, laevigata, nitida, 

 fulvo-cornea; spira conica, apice acuta; sutura impressa, sub- 

 marginata; anfr. 6^/2 convexiusculi, ultimus spira paulo bre- 

 vior, peripheria obsoletissime angulatus, juxta perforationem 

 punctiformem vel clausam subcompressus ; apertura obliqua, 

 angulato-ovalis, basi subeffusa; perist. subsimplex, margine 

 dextro recto, cohmiellari calloso, subappresso. ~- Lona;. 10, 

 diam. 5 mill. Ap. 41/2 milL longa, 3 lata. (Coll. Nr."332.) 



Hydrocena cornea Pfr. in Proc. Zool. Soc. 1854. p. 306. n. 7. 



— — H. tt A. Adums Gen. rec. Moll. II, p. 299. 



Habitat Borneo et ,.Bashee Island" (Sir E. Belcher). 



4. H. viilpina Ffr. 



T. perforata, globoso-conica, solida, laevigata, rubella; 

 spira conica, acutiuscula; anfr. 5 modice convexi, ultimus 

 spiram aequans, rotundatus; apertura parum obliqua, angulato- 

 ovalis; perist. subcontinuum , adnatum, inargine dextro sub- 

 inflexo, columellari calloso. — Operc. teuue, castaneum, pauci- 

 spirum. — Long. 8, diam. 6 mill. Ap. 5 mill. longa, 41/3 

 lata. (Mus. Cuming.) 



Hydrocena vnlpina Pfr. in Proc. Zool. Soc. 1857. p. 112. 

 Habitat „Fox Islands.'' 



5. H. brevicula Pfr. 



T. subimperforata , globoso-conica, solidula, sublaevigata, 

 corneo-fulva ; spira convexo-conoidea, acutiuscula ; sutura sulco 

 profundo marginata; anfr. sub-G, superi plani, plerumque erosi, 

 penultiinus convexus, ultimus spira longior, intlatus; apertura 

 subverticalis, angulato-seniiovalis ; perist. rectum, margine co- 

 lumellari calloso, appresso. — Long. 872» diam. 5^/2 mih. 

 Ap. 5 mill. longa, 2^/3 lata. (Mus. Cuming.) 



Hydrocena brevicula Pfr. in Proc. Zool. Soc. 1854. p. 306. n. 10. 



— — H. Qt A. Adams Gen. rec. MoU. II. p. 299. 



Habitat Singapore, 



