158 
HYDROCENA §. 1. 
lor. — Long. 2 2 / 3 , diam. 2 mill. Ap. D/g mill, longa. (Coll. 
Nr. 335.) 
Hydro caena Gutta Shuttl, Diagn. n. Moll. Nr. 1. p. 11. 
Realia? Gutta Pfr, Mon. Pneiim. p. 305. n. 2. 
Liarea ? Gutta Gray Cat. Phan. p. 217. 
Hydrocena gutta Pfr. in Proc. Zool. Soc. 1854. p. 305. n. 2. 
— — H. et A. Adams Gen. rec. Moll. II. p. 299. 
Habitat in insulis Canariis. 
10. II. Noticola Benson, f 
„Testa subobtecte perforata, gioboso-conica, laevigata, 
nitidula, succinea, pellucida ; spira conica, apice obtusiusculo, 
rubello, sutura valde impressa; anfractibus 4 convexis, ultimo 
ventricoso ; apertura vix obliqua , ovato-acuta; peristomate 
tenui, acuto, callo parietali, columeliarique appresso-reflexo, 
umbilicum fere tegente. — Operculo normal! , corneo, pellu- 
cido, paucispirato. — Long. 2, diam. 1V 4 mill. 44 (B.) 
Hydrocena Noli cola Bens, in Ann. and Mag. 2d. ser. XVIII. p. 439. 
Habitat in monte „Tafelsberg“ Promontorii Bonae Spei. 
11. II. tersa Benson, f 
„T. subperforata, minuta, ovato-conica, albida, longitudi- 
naliter (radiatim) sub lente striis exilissimis eleganter insculpta ; 
sutura impressa , apice obtusiusculo; anfr. 5 convexis ; aper- 
tura angulato-ovata, vertical!, tertiam partem testae aequante ; 
perist. simplici, crassiusculo, marginibus callo tenui junctis. — 
Diam. 1, long. 2 mill. 44 (B.) 
Cyclostoma tcrsum Bens . in Ann. and Mag. N. H. 2d. ser. XI. p. 285. 
Cyclostomus? tcrsus Pfr . in Malak. Bl. 1854. p. 93. 
- — H. et A. Adams Gen. rec. Moll. II. p. 291. 
Hydrocena tersa Bens . in Ann. and Mag. 2d. ser. XVII. p. 232. 
Habitat in muscis arborum ad Musmai, propa Cherra-poonjee 
Indiae. 
12. Iff Milium Benson, f 
,.T. aperte umbilicata, minutissima, trocbiformis , laevi- 
gata, albida, spira conica, sutura profunda, apice obtuso ; anfr. 
4 j / 2 convexis, ultimo inflato, rotundato ; apertura obliqua, dia- 
gonali , subcirculari; perist. expansiusculo , margine recto, 
acuto , integro , breviter adnato ; umbilico margine angulato, 
compressiusculo. — Long, I 1 /*, diam. vix 1 mill. 44 (B.) 
