124 
CYCLOPHORUS §. 21. 22. 
peristomate postice ad angulum profunde inciso, infra ad latus 
basale conspicuiter producto, bilabia to, labio interno in junio- 
ribus violaceo, in adultis ad marginem albido, externo undique 
fere aequaliter planeque dilatato, corneo. — Operculum tenue, 
corneum, multispiratum. — Diam. maj. 6, min. 5, alt. testae 6,6, 
diam. apert. int. 2,6, ext. 3,2 mm.“ (St.) 
Lagocheilus striolatus Stol. in Journ. As. Soc. XLI. Pt. 2. 1872. p. 271. 
t. 10. f. 16. 
Habitat in insula Penang. 
§. 22 . 
Subgenus Ditropis Blanford*). 
193. C. planorbis Blanford. f 
„Testa latissime umbilicata, depressa, discoidea, vitrea, 
tenuis, olivacea, glabra, obsolete striatula, polita. Spira plana, 
nucleo non exserto, saepe eroso, sutura impressa, ad anfractum 
ultimum et supra et in umbilico costa sublate intus marginata. 
Anfr. 4 — 41/ 2 > convexi; ultimus antice vix descendens sub- 
quadrangularis, supra atque subtus convexus, carinis duabus 
validis circumdatus, una ad peripheriam, altera juxta basin 
ad latus externum. Umbilicus perspectivus, omnes anfractus 
exhibens. Apertura obliqua, sub-quadrata, intus albido-labiata; 
peristoma incrassatum, rectum, non expansum. — Operculum 
intus convexum, extus concavum, marginibus anfractuum exter- 
norum laciniatim elongatis. — Diam. maj. 7 — 8V 2 , min. 5*/r — 7, 
alt. D/ 2 — 2 mill. Ap. diam. fere D/ 2 — 1% niilL M (Bl.) 
Cyclophorus planorbis (Ditropis) W. T. Blanf. in Journ. As. Soc. Beng. 
XXXVIII. Pt. 2. p. 126. t. 16. f. 1. (Contrib. to Ind. 
Malac. X. 1869.) 
Habitat „Calcad hills 66 ad fines provinciae Travancore in 
India meridionali. 
194. C. Beddomei Blanford. f 
„Testa latissime umbilicata, depressa, discoidea, tenuis, 
olivacea, confertissime striata, parum nitida, spiraliter costata. 
*) Ditropis W. T. Blanf. in Journ. As. Soc. Beng. XXXVIII. 1869. 
Pt. 2. p. 126: „testa translucens, subvitrea, epidermide olivacea nitida in- 
structa, carinis duabus, vel pluribus, una ad peripheriam, altera subtus ab 
ilia interspatio discreta circumdata. Operculum corneum, arctispirum, du- 
plex, lamina interna meinbranacea, externa crassiuscula, marginibus anfrac- 
tuum liberis, ambabus sulco marginali disjunctis." 
