CYCLOPHORUS §. 12. 
99 
plana, vertice subtili vix prominulo; anfr. 4% convexiusculi, 
ultimus lente descendens ; umbilicus latus, profundus ; apertura 
obliqua, subovali-rotundata; perist. subsimplex, undique vix 
expansiusculum , marginibus approximatis , infra medium an- 
fractus penultimi callo brevi subangulatim junctis. — Operc. 
immersum, tenue, corneum, arctispirum, extus concaviusculum. 
— Diam. maj. 18, min. 15, alt. 6 mill. (Coll. Nr. 63.) 
Cyclostoma annulatum Trosch. in Mus. Berol. 
— Pfr. in Zeitschr. f. Mai. 1847. p. 150. 
— — Chemn. ed. II. N. 175. p. 162 t. 22. f 17 —19 
Cyclophorus annulatus Pfr. in Zeitschr. f. Malak 1847. p. 108. Consp. 
N. 142. 
— — Gray Catal. Cyclopli. p. 22. N. 32. 
ft. Major; diam. maj. 23*/ 2 , min 19, alt. 8 mill ; ap. oblique 9 mill, longa. 
Cyclostoma discus Sow. mss. in Mus. Cuming. 
— annulatum var. Chemn. 1. c. p. 163. t. 29. f. 14. 15. 
Habitat in insula Ceylon (Hoffmeister). 
82. C. ra vidus Reuson. f 174 
T. aperte umbilicata, subdiscoidea, nitidiuscula, confertim 
scabre tenuiter radiato-striata , olivaceo-lutea , sub epidermide 
alba ; spira vix elevata, apice planato, obtuso ; sutura impressa ; 
anfr. 4 convexiusculi, lente accrescentes, ultimus cylindraceus, 
antice vix descendens, superne prope suturam sub lente obso- 
lete spiraliter striatus ; apertura obliqua, circularis ; perist tenue, 
rectum, marginibus callo tenui junctis ; umbilicus latus, per- 
spective. — Operc. tenue, corneum, multispiratum , extus 
concaviusculum. — Diam. maj. 15, min. 13, axis 7 mill. (B.) 
Cyclostoma ravidum Bens, in Ann. and Mag. 2d. ser. VIII. 1851. 
Cyclophorus ravidus Pfr. Consp. N. 143. 
Habitat ad apices montium Nilgherries Indiae Meridionals 
(Jerdon). 
83. C.? disculus Pfr. 175 
T. umbilicata, depressa, discoidea, solidiuscula, nitida, 
alabastrina; spira planissima; anfr. vix 4 convexiusculi, ad 
suturam impressam striati, ultimus teretiusculus, subdepressus, 
in umbilico lato distinctius striatus, antice brevissime solutus; 
apertura subverticalis , circularis; perist. continuum, simplex, 
rectum. — Operc.? — Diam. maj. 14, min. 11, alt. 5 mill. 
(Mus. Cuming.) 
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