HYDROCENA §. 4. 
163 
ad basin subangulatim producto. — Long. 7y 2 , diam. 4 mill, 
longa, 2 Vs lata. (Coll. Nr. 341.) 
Cycloslorna bulimoides Jlombr . et Jacq. Voy. Pol Sud. Zool. V. p. 52. 
t. 12. f. 37—89. 
/?. Major, anfr. 7, long. 10‘/ 2 , diam. 5 2 / 3 mill. 
Habitat in ins. Hogoleu (Jacq.) et una cum var. majore in 
insulis Salomonis (Macgillivray). 
* 
31. eroPd Quoy* *{* (Omphalotropis Pfr. in Proc. 1854. 
p. 307. — Ad Gen. p. 300. — ■ Radio. erosa M. 
E. Gray Fig. Moll. Anim. t. 311. f. 12. — Gray 
Phan. p. 221. — Omphalotropis erosa Pfr. in Proc. 
1852. p. 151.) ............. Mon. p. 310. 
32. dll l>l(i Pfr. (Coll. 342. — Omphalotropis Pfr. in 
Proc. 1854. p. 308. — Ad. Gen. p 300. — Om- 
phalotropis dub) a Pfr. in Proc. 1852. p. 151. — 
Pneum. n. 10. — Rcaha dubia Gray Phan. p. 221.) - - 310. 
33. H. Hiiaheisieiisig Pfr. 
T. perforata, elongato-conica , solida, striatula et irregu- 
lariter pustulato-punctata , opaca , flavida vel fulvida ; spira 
conica, apice acuta; anfr. 6 l / 2 , superi plani, penultimus con- 
vexiusculus , ultimus 2 / 5 longitudinis subaequans , basi rotun- 
datus, juxta perforationem punctiformem carinatus; apertura 
yerticalis, angulato - ovalis ; perist. tenue, margine dextro ar- 
. cuato, recto, columellari minus arcuato, subpatente. • — Long. 
9y 2 , diam. 5 mill. Ap. 4 mill, longa, 3 lata. (Mus. Cuming.) 
Hydrovena tluahcinensis (Omphalotropis) Pfr. in Proc. Zool. Soe. 1854 
p. 308. n 23. 
— — — II. et A. Adams Gen. rec. Moll. II. 
p. 300. 
/3. Minor, tenuior, anfr. 6; long. 7 ’/ 2 , diam. 4 mill. 
Habitat in insula Huaheine. 
34. Iff. radiata Pfr. 
T. perforata, ovato-conica, tenuiuscula, sublaevigata, nitida, 
diapbana , albida , fulvo irreguiariter radiata ; spira conica, 
apice acuta ; sutura submarginata ; anfr. 7 planiusculi, ultimus 
2 / 5 longitudinis subaequans , ventrosus, peripberia subangula- 
tus, juxta perforationem apertam carinato-compressus ; apertura 
verticalis, acuminato-ovalis , basi subeffusa; perist. simplex, 
rectum, margine columellari superne subdilatato. — Long. 7 1 / 2 , 
diam. 4 mill. Ap. 3y 2 mill, longa, 2 J / 2 lata. (Coll. Nr. 343.) 
11 ^ 
