108 CYCLOPHORUS &. 8. : 
spiraliter albido fasciata, periomphalo lato albo. Spira de- 
presso-coniea, lateribus concavis, apice papillari, magis exserto, 
sutura profunda. Anfr. 5, convexi, ultimus magnus, ad peri- 
pheriam angulatus, angulo antice evanescente, Subtus convexus, 
juxta aperturam leniter descendens. Apertura fere rotunda, 
obliqua, lutescenti-albida, aliquantulum latior quam alta. 
Peristoma rectum, incrassato-expansum, subcontinuum. Um- 
bilicus pervius. Operculum normale. — Diam. maj. 46, min. 38, 
axis 2D mill; apert. c. perist. 23 mill. lata, 21!/, alta.* (B.) 
Cyclophorus sublaevigatus W. .Blanf. in Proc. Zool. Soc. 1869. p. 446. 
— — Hanl. & Theob. Conch. Ind. t. 34. f. 7. 
Habitat ad ripas fluminis Iravadi Indiae (J. Anderson). 
Obs. Affinis C. Pearsoni Bens. et excellenti Pfr., sed utroque de- 
pressior. A C. Theobaldiano Dens. differt apertura multo minore et super- 
ficie laeviore. 
* 
76. semisuleatus (Cyclostoma) Sow. (Coll. 29.) I. 88. II. 53. III. 
66. — Martens Ostas. Zool. II. p. 130 *). — Pte! Cat. p. 119. — 
Malacea. 
77. C. Layardi H. Adams. 1 
,C. testa late umbilicata, depressa, solidula, oblique con- 
fertim striata et liris pluribus distantibus sculpta, sub epider- 
mide fusca flavidula; spira parum elevata, apice obtusulo, su- 
tura profunda; anfr. b, convexis, ultimo antice descendente; 
apertura obliqua, subcireulari, superne angulari; perist. con- 
tinuo, duplici, interno breviter expanso, albido, externo ex- 
panso, superne dilatato, adnato. — Opere. corneum, tenue, 
extus subconcavum, arctispirum, — Diam. maj. 26, min. 22, 
alt. L1 mill * (HL A d:) 
Cyclophorus Layardi .-H. Adams in Proc. Zool. Soc. 1868. p. 294. t. 28. 
me gut 
Habitat in insula Ceylon (Thwaites). 
* 
*) ,'l'Pesta depresso-turbinata, late umbilicata, solidula, superne liris 
elevatis 7—10, basi cirea umbilieum liris subundulosis confertis numerosis 
sculpta, superne fusca, plus minusve marmorata, infra peripheriam unifasciata, 
basi albida; spira brevis; anfr. 5, convexi, ad suturam planulati, priores 3 
laeves, flavescentes, ultimus circa umbilicum obtuse angulatus, ad aperturam 
descendens; apertura sat obliqua, circularis; peristoma crassum, subduplicatum, 
breviter expansum, album. — Operceulum solidulum, extus flavescens, intus 
aurantio-rufum, margine pallidiore, centro vix prominulo area depressa cir- 
cumdato. — Diam. maj. 41, min. 30, alt. 27; apert. long. — lat. incluso 
perist. 18, excluso 16 mill.* 
