—-— e 
liter oblique costulata: anfr, 5 planiusculis, ultimo ad aperturam 
subconstricto: apertura lunari; perist. late. reflexo, intus albo -la- 
biato, margine columellari subrecto, expanso. umbilicum obtegente. 
Diam. 17—18, altit, 11—12 mill. — Ohio, Pennsylvania. — 
Affinis H. multilineato. 
160. Helix planorboides (Mesomphix) Rafin, — Helicella 
planorb. Fér, pr. 211. t. 82. f. 4. — Circinaria planorb. Beck p. 24. 
— Helix concava Say Philad. journ. II. p. 159, — T. late umbi- 
licata, depressa, superne leviuscula, basi costulato -striata, dia- 
phana, corneo-flavida: spira brevissima: sutura mediocriz anfr, 
5 planiusculis; apertura lunato-orbiculari; perist. simplice, reflexius- 
culo, marginibus approximatis, 
Diam, 14, altit. 6'/, mill. — Illinois et Missouri, (Say.) 
161. Helix pomum Pfr, — T. umbilicata, globosa, striis 
incrementi subrugata, superne rufescente, basi pallida, epidermide 
tenui, fusca induta: sutura irregulariter crenulata: spira brevi; 
obtusa; anfr. 4'/, convexiusculis, ultimo inflato, subito deflexo, 
juxta umbilicum angustum, pervium canaliculato: apertura lunato- 
rotundata; perist. albo, margine dextro incrassato, subreflexo, co- 
lumellari intus late dentato, extus reflexo, umbilicum semitegente. 
Diam. 39, altit. 28 mill. — Rat. anfr. — 3 : 5. — Nova 
Seclandia? 
162. Helix pulcherrima Sow. Proc, zool. sol. 1840. p. 90. 
— T. imperforata, subglobosa, apice obtuso nitide sanguinea, uni- 
colore vel coloribus variis elegantissime picta: spira obtuse. .co- 
noidca, parvula; anfr. 4'/, convexis, ultimo vaide inflato, ad co- 
lumellam excavato: columella obliqua, albido-callosa, superne 
obsolete unidentata: apertura lunato-orbiculari, intus nitidissima; 
perist. simplice. expanso. 
Diam. 43, altit, 29 mill. — Rat. anfr, — 4: 7. — Prov. Ca- 
gayan insule Luzon. 
Testa plerumque rufo-nigricans, epidermide hydrophana, albida 
varie zonata et reticulata, labro rufo vel carneo. 
Varietates vidi sequentes: 
f. "festa unicolore, cinnamomea, labro albo. 
y. T. fusco-purpurea, zonis aliquot albis. labro sanguinco- 
marzinato. 
9. TT. aurantia, albo-zonata, macula columellari purpuras- 
cente, labro albo. 
&. T. omnino rosea, versus aperturam lutescente, zonis albis 
interruptis: labro roseo-marginato. 
C. T. tenui, unicolore, sulphurea, vix ad apicem rubescente. 
labro albo. (Albina?) 
