80 
MEGALOMASTOMA §. 2. 
obtuso ; sutura impressa, marginata ; anfr. 6 convexi , penulti- 
mus elongatus, supra aperturam planatus, clorso gibbus, ulti- 
mus angustior, antice subito aseendens ; apertura leviter sur- 
sum spectans, circulars, fauce fusca; perist. albidum , incras- 
satum, superne angulatum, expansum et reflexiusculum , intus 
late sulcatum, turn calloso-marginatum, callo interiore dextror- 
sum superne angulato-sinuato , sutura canalis obsoleti ad an- 
gulum anticum raro apparente. — Operc. ? — Long. 35, diam. 
anfr. penult. 20 mill. Ap. diam. (excluso perist.) 11 mill. (Coll. 
Benson.) 
Megalostoma gravidum Bens, in Ann. and Mag. N. H. 2d. ser. XVII. 
p. 229. 
— — Pfr. Novit. conch. I. n. 214. t. 35. f. 1. 2. 
/S. Minor, rufo-carnea, anfr. 5 l / 2 ; long. 27, diam. 147 2 mill. ( Pfr. 1. e. 
f. 3. 4.) 
Habitat ad Moulmein imperii Birmani (W. Theobald). 
O b s. Characteribus nonnullis ad Rhaphaulum chrysallidem Pfr. 
accedere videtur, sed in specimine minore canalis suturalis vestigium nullum 
adest. 
* 
5. M, eomplanntuin Pfr. 
T. subobtecte umbilicata , pupaeformis , solida, oblique 
levissime striatula, sordide violacea, absque epidermide ; spira 
subcylindrica , apice attenuata , breviter truncata; sutura im- 
pressa, pallida ; anfr. superst. 5, superi -convexi, penultimus 
vix convexiusculus, ultimus angustior, latere aperturae subpla- 
natus, antice pallidus, circa umbilicum crista pallida, circum- 
scripta munitus; apertura verticalis, circularis, in fundo ca- 
stanea; perist. album, perincrassatum , superne breviter adna- 
tum, margine dextro expanso et reflexo, sinistro dilatato, 
patente, superne subauriculato. — Long. 32 1 / 2 , diam. 14 mill. 
Ap. intus 8 mill. diam. (Mus. Cumirig.) 
Megalomast oma complanatum Pfr. in Proc Zool. Soc. 1856. p. 36. 
~~ Pfr • Novit. conch. I. p. 67. n. 112. t. 19. 
f. 3. 4. 
— — Pfr. in Malak. Bl. 1856. p. 120. 
Habitat in insula Cuba. 
* 
6. bitubercailatuni Sow. (Coll. 113 . — Ch. ed. 
nov. p. 264. t. 36. f. 5. 6. — Gray Phan. p. 89. 
— Pocy Memor. I. p. 403. — Ad. Gen. p. 284. — 
Pfr. in Malak. Bl. 1856. p. 121. 1857. p. 113. 
Cyclost. tortumvar. Poey Memor. I. t. 13. f. 1—7.) Mon. p. 127, 
