1010 MALAYSIAN LAND AND FRESHWATER MOLLUSCA, 
E. HUNGERFORDIANA, von Moll. Jour. As. Soc. Bengal, l.c. 
p. 301. 
Bukit Pondok, Perak. 
Family VITRINEA. 
3. ViTRiNA, Draparnaud, 1801. Tab), pp. 33, 98. 
Shell dextral, depressed or suV)-globose, very thin, pellucid, with 
a very large last whorl ; no umbilicus, columella spiral ; aperture 
large, oblique semi-lunar, Avithout teeth ; peristome thin, acute, 
not continuous. 
Animal long, like a slug, and too large for the shell, tail very 
short ; mantle reflected over the shell-margin with posterior right 
lobej radula 100 rows of 75 ; marginal teeth with a single long 
curved apex. 
ViTRiNA NUCLEOLA, Stol. Jour. As. Soc. Beiig. XL. pi. 4, 
fig. 12 ; Pfr. Nomencl. Hel. Viv. p. 28, No. 45. 
Penang ; Prince of Wales Island ; Straits of Malacca. 
4. Helicarion, Ferussac, (1821), Tabl. Syst. des Animaux Mol- 
lu.sques, p. XXXI. and Yoy. de Freycinet. 
Shell heliciform, round oval, thin, fragile, covered with a very 
thin periostraca, spire short, Avhorls few, the last much enlarged, 
oblong triangular ; peristome simple, acute. 
Animal like Vitrina, but the foot is truncate at its posterior 
extremity, with a caudal gland like Arion. 
Helicarion permollis, Stol. (as Vitrina) Jour. As. Soc. 
Beng. XLII. pi. 1, fig. 11. = Vitrina permollis, Pfr. Mon. Hel. 
VII. p. 10. 
Penang. 
H. BORNEENSis (Vitrina), Pfr. Mon. Hel. IV. p. 793; Nov. 
Conch. I. pi. 28, figs. 10-12. 
Borneo. 
