CYCLOSTOMIDA, 981 
in the middle of the columellar side. P. grande, Gray (Ixxv, 
46, 47). 
cALLIA, Gray. Shell smooth, shining, pupiform; aperture 
without sinus; peristome simple, thin. P. lubrica, Sowb. 
(Ixxv, 48). 
HARGRAVESIA, H. Adams. (Hyalopsis, Pease.) Shell like 
Pupina, but anterior marginal slit or canal absent, distinctly 
channeled posteriorly. P. polita, H. Ads. (Ixxv, 50). 
PUPINELLA, Gray. 
Distr.—13 sp. East Indies, Formosa, Philippines, Australia, 
etc. P. pupiniformis, Sowb. (Ixxv, 51, 52). 
Shell oval-oblong, covered with a thin, corneous epidermis ; 
aperture circular ; peristome thick, reflected, slit on the anterior 
left side and canaliculate at the suture. Operculum corneous, 
multispiral. 
pupinopsis, H. Adams, 1866. Peristome tubularly prolonged 
on the penultimate whorl. P. Swinhoei, H. Ad. Formosa. 
RapHautus, Pfeiffer. 
Syn.—Anaulus, Pfeiffer. 
Distr.5 sp. Kast Indies. R. bombycinus, Pfr. (Ixxv, 53). 
Shell umbilicated, pupiniform, peristome double, internal 
continuous, external dilated, perforated at the margin by a 
canal; canal sutural and internal, terminating anteriorly, and 
embraced by the outer portion of the double peristome (it can 
be traced externally along the last whorl), and reaching into 
the concavity of the spire. Operculum very thin, corneous; 
narrow-whorled. 
‘The use of the sutural tube seems to be the preservation of 
a communication with the external air when the aperture is 
closed.’’—-BEnson, 
STREPTAULUS, Benson. Shell pupiniform, shining, peristome 
circular, not continuous, with a subsutural internal tube, which 
is reflexed at the aperture and runs along the suture externally. 
Isp. Himalayas. &. Blanfordi, Benson (Ixxv, 54). 
Carauus, Pfeiffer. 
Distr.—l7 sp. Ceylon. C. pyramidatus, Pfr. (Ixxv, 55). 
Shell pupa-shaped, with the base keeled, producing a channel 
in the front of the aperture. Operculum circular, horny, the 
whorls easily separable. Represents in Ceylon a group ap- 
proaching Megalomastoma. The whorls of the operculum, when 
macerated, separate and may be unrolled in spiral form. 
TORTULOSA, Gray. Last whorl solute. Nicobar.  C. tortuosa, 
Chemn. (lxxy, 56-58). 
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