a. 9955 
spira vix convexiusculas anfr. 5'/, planis, lente crescentibus, ultimo 
obsolete angulato; umbilico latissimo, perspectivo: apertura lunata; 
perist, simplice, acuto. 
Diam. 10, alüt. 4 millim, — Panama. (E collectione A&n- 
toniana.) 
94. Helix arborca Say. Enc. Amer. t, 4. f. 4. — Helicella 
Fér. pr. 219. Beck p. 7. — T. perforata, globoso-depressa, nitida, 
virenti-cornea; spira convexa; anífr. 4'/, regulariter crescentibus, 
convexiusculis; umbilico .angustissimo, pervio; apertura subcircu- 
lari; perist. simplice, acuto. 
Diam. 4'A4, altit. 2!/, mill. — Ohio. 
95. Helix Babondubii Parr. Ant, p. 37. — T. umbilicata, 
depressa, nivea, apice cornea, fasciis variis nigris, ad basin fus- 
cidulis: et interruptis ornata; spira vix elevata; anfr. 5'/, convexius- 
culis, ultimo valde inflato; umbilico angusto, non pervio; apertura 
lunato-orbiculari; perist. acuto, intus albo-labiato. 
Diam. 16, altit, 9'/, mill. — Croatia et Dalmatia. 
Habitus H. cespitum, umbilico diversa, in quo anfractus pen- 
ültinius solum conspicitur. 
96. Helix balteata Sow. Proc. zool. soc. 1840. p. 136, — 
T. imperforata, elongato-globosa, solida, nitida, pallide sulphurea, 
zonis viridibus et griseo-violaceis elegantissime notata, apice ob- 
iuso plerumque rosea; anfr. 9 convexiusculis; columella lata, per- 
obliqua, superne obsolete tuberculata? apertura lunari; perist. 
subincrassato, vix expanso, extus viridi, intus violaceo. 
Diam. 25, altit. 20 mill, — Rat, anfr. — 7 : 13. — Insula 
Zebu. (Cuming.) 
97. Helix Beckiana Pfr. — T. umbilicata, orbiculari, te- 
nui, oblique striata, fusca, vix nitidula; spira parum celata; su- 
tura lineari; anfr, 6 planiusculis, ultimo deflexo, ad peripheriam 
angulato: angulo ad apcerturam obsoleto; basi planiuscula; umbi- 
lico mediocri, pervio; apertura fere horizontali, subtrapezoidali ; 
perist. simplice, margine columellari brevi, basali reflexo, quasi 
in tuberculum incrassato. 
Diam. 22, altit, 10 mill. — Rat. anfr. — 5 : 6. — Ins. Luzon. 
(Prov. Nueva Ecija: Cuming.) 
98. Helix Bensoni v. d. Busch. — T. perforata, superne 
tectiformi, confertim costulata, subtus convexa, griseo-albida, 
acute crenulato-carinata: carina anfractuum superiorum promi- 
nente; anfr. 6'/, planis, ultimo basi vix striato; apertura angulato- 
lunari; perist. simplice. 
Diam. 12, altit. 7 millim. — Bengalia. 
