191 
110 LEPTOPOMA &. 3. 
$. 3. 
13. E, neutimarginatum Sowerby. 
T. umbilicata, depresso-turbinata, tenuiuscula, oblique 
striatula, olivaceo-fusco et albido marmorata et taeniata; spira 
brevis, conica, acutiuscula; anfr. 5 convexiusculi, ultimus acute 
earinatus, basi convexior; umbilicus angustus, vix pervius; 
apertura subcircularis, intus alba, nitida, coloribus perlucen- 
tibus; perist. subecontinuum, album vel luteum, undique ex- 
pansum, margine columellari subinerassato-reflexo. —  Operc. 
normale. — Diam. maj. 20, min. 29!/,, alt. 18. mul. Ap. 
intus 12'/, mill. longa. (Coll. Nr. 71.) 
. Cyclostoma acutimarginatum Som. in Proc. Zool. Soc. 1842. p. 80. *) 
— — Reeve Conch. syst. II. t. 183. f. 7. 
-- — Som. 'Thes. N, 95. p. 124. t. 27. f. 138. 139. 
— -- Chemn. ed. IL. N. 133. p. 128. t.-15. 
f. 19—22, 
Leplopoma acutimarginatum Pfr. in Zeitschr. f. Mal. 1847. p. 109. 
Consp. N. 158. 
d — Gray Catal, Cycloph. p. 27. N. 20. 
Habitat Catbalonga insulae Samar Philippinarum (H. Cuming). 
14. E. helicoides Grateloup. 
T. perforata, trochiformis, tenuis, albida, lineolis fuscis 
saepe ornata vel castaneo substrigata et marmorata; spira 
conica, acuta; anfr. 6 planiusculi, obsolete 5 — 6 - carinati, 
ultimus medio acute carinatus, utrinque convexiusculus, basi 
laevigatus; umbilicus angustissimus, non pervius; apertura 
obliqua, ovali-subcircularis, intus submargaritacea; perist. tenue, 
reflexo-expansum, marginibus disjunctis, columellari subsinuato. 
— Opere. (ex Sow.) corneum, tenue, marginibus anfractuum 
lamellosis, levatiusculis. — Diam. maj. 21, min. 17'/7,, alt. 16 
mil. Ap. 1l mill. longa, 10 lata. (Coll. Nr. 72.) 
Cyclostoma helicoides Grat. Act. Soc. Linn. Bord. XI. p. 442. t. 3. 
f VARY 
*) T. suborbiculari, conica, tenui, laevi, subpellucida, badia, albido- 
marmorata; spira subacuminata, submammillari; anfr. 4 raptim crescentibus, 
supra infraque rotundatis, margine carinato, acuto, prope suturam marginem- 
que coloribus articulatis; apertura magna, Oorbiculari, peritremate reflexo, 
albo, incrassato, prope ultimum anfractum subinterrupto, superne productiore, 
minime reflexo; umbilico mediocri, profundo; operculo corneo, multispirali. 
— Long. 0,9, lat. 1,154, (Sow. 1. e.) 
**) T. trochiformi, vix perforata, alba, vitrea, tenui, fragilissima, nitida, 
