HYDROCENA §. 4. 5. 
165 
38. II grain tom Pfr 
T. vix perforata, conico-ovata, solidula, sublaevigata, sor- 
dicle fulva vel albido et fulvido zonata ; spira conoidea, apice 
obtusula ; anfr. 5 perconvexi, ultimus spira vix brevior, circa 
perforationem punctiformem distincte carinatus; apertura sub- 
obliqua, ovalis; perist. simplex , rectum, margine columellari 
recedente, subpatulo. — Long. 5, diam. 3 mill. Ap. 2 1 / 3 
mill, longa, 1 2 / 3 lata. (Coll. Nr. 347.) 
Hydrocena granum (Omphalotropis) Pfr. in Proc. Zool. Soc. 1854. 
p. 308. n. 31. 
— — — - et A. Adams Gen. rec. Moll. II. 
p. 300. 
Habitat „Isle of Pines“ Ocean! Australici (Macgillivray). 
39. Hf. cerea Pfr. 
T. vix perforata, ovato - conica , solidula, laevigata, vix 
nitidula, cerea; spira convexo-conica , acutiuscula; anfr. b l [ 2 
vix convexiusculi, ultimus 1 / 3 longitudinis paulo superans, ro- 
tundatus, perforationem punctiformem carina callosa, obtusa 
cingens ; apertura parum obliqua, angulato-ovalis ; perist. sim- 
plex, rectum, margine columellari brevissime fornicato-patente. 
— Long. 4 1 / 2 , diam. 2 2 / 3 mill. Ap. vix 2 mill, longa, 1V 2 
lata. (Mus. Cuming ) 
Hydrocena ccrca (Omphalotropis) Pfr. in Proc. Zool. Soc. 1857. p. 112. 
Habitat in ins. Norfolk. 
§• 5 . 
40. II. Navigatorum Pfp. 
T. anguste perforata, ovato-turrita, solidula, fusca, costis 
subdistantibus, albis , undulatis munita ; spira elongato-conica, 
acutiuscula; anfr. 6 convexi, prope suturam filocarinati, ulti- 
mus 2 / 5 longitudinis subaequans, supra carinam impressus, 
circa perforationem carina compressa munitus; apertura vix 
obliqua, subelliptica ; perist. simplex, rectum, margine colu- 
mellari vix patulo. — Long. 6V3, diam. 3 2 / 3 mill. Ap. 2 3 / 4 
mill, longa, l 2 / 3 lata. (Mus. Cuming.) 
Hydrocena Navigalorum (Omphalotropis) Pfr. in Proc. Zool. Soc. 1857. 
p. 113. 
Habitat in insulis Navigatorum. 
