116 
LEPTOPOMA §. 4. 
200 23 . Ii. regulare Pfr. 
T. angustissime perforata, conico - globosa , tennis, liris 
approximate supeme aequalibus sculpta, interstitiis spiraliter 
confertim striata, diaphana , albida , maculis fulvis regnlariter 
tessellata ; spira turbinata, apice acuta, pallide cornea ; anfr. 5 1 / 2 
convexiusculi, ultimus convexior, infra liram periphericam in- 
flatus, obsoletius liratus; apertura obliqua, lunato - circularis ; 
perist. interruptum, tenue, album, breviter patens, margine 
columellari basi subangulatim dilatato. — Operc. ? — Diam. 
maj. 12'/ 2 > min. 10, alt. 10 mill. Ap. 6'/ 2 mill, longa. (Mus. 
Cuming.) 
Cyclostoma regular e Pfr. in Proc. Zool. Soc. 1851. Jul. 
_ — Chemn. ed. II. N. 208. t. 40. f. 3. 4. 
Leptopoma regular e Pfr. Consp. N. 168. p. 58. 
Habitat in insulis Philippinis. 
Obs. Peraffine L. atricapillo Sow differt spira breviore, liris regu- 
laribus, umbilico angustiore, etc. 
201 24 . Ii. acuminatum Sowerby* 
T. perforata, turrito-conica, tenuiuscula, oblique striatula, 
diaphana, nitida, albicans; spira elongata, acuminata, apice 
fuscula; anfr. 6'/ 2 convexiusculi, ultimus rotundatus, infra 
medium carinatus; apertura perobliqua, truncato-ovalis ; perist. 
acutum, expansum, marginibus disjunctis, columellari superne 
subdilatato, reflexiusculo , basi angulatim subincrassato. — 
Operc.? — Diam. maj. 12, min. 10, alt. 13 mill. Ap. 7 mill, 
longa. (Mus. Cuming, et Gruner.) 
Cyclostoma acuminatum Sow. in Proc. Zool. Soc. 1843. p. 65. *) 
— — Sow. Thes. N. 133. p. 138. t. 30. f. 235. 
— — Chemn. ed. II. N. 104. p. 105. t. 13. f. 11. 12. 
Leptopoma acuminatum Pfr. in Zeitschr. f. Mai, 1847. p. 108. Consp. 
N. 169. 
— — Gray Catal. Cycloph. p. 27. N. 18. 
Habitat S. Juan insulae Luzon (H. Cuming). 
*) T. subglobosa, pyramidali, tenui , laevi , pellucida, albicante, spira 
acuminata, apice acutiusculo , fuscescente; anfr. 6 rotundatis , substriatis, 
ultimo magno , carina ad peripheriam obsoletiuscula munito , ante carinam 
planulatiusculo ; apertura subcirculari , postice subacuminata; peritremate 
tenui, reflexo, ad ultimum anfractum interrupto, latere umbilicali subsinuato ; 
umbilico parvo. (Sow. 1. c.) 
