238 
CYCLOSTOMUS §. 10. 
/? Fasciis angustis fuscis interruptis. 
Cyclostoma fusco-ltneatum Adams Proc. Bost Soc. 1845. p. 11. *) 
— Bronnii var. Adams Contrib. to Conch. N. 9. p. 180. 
Habitat in insula Jamaica. 
391 78. C. lamellosiis Adams. 
T. ovato - conica , subabbreviata , lamellis longitudinalibus 
confertis, acute elevatis, ad suturam prominentioribus munita, 
irregulariter et interrupte brunneo - lineata ; apex truncatus, 
amissis 2 — 3 anfractibus; spira curvilinearis ; anfr. superst. 
3 7-2 convexi, ultimus basi spiraliter subsulcatus; apertura or- 
bicularis ; perist. duplex : internum validum , production , re- 
tlexiusculum , externum angustum, fere in planum aperturae 
reflexum, superne auriculatum. — Operc. 4 1 / 2 - spiratum , la- 
mella spirali vix elevata, lateraliter valde producta. — Long, 
(trunc.) 0,49 ; lat. max. 0,4 ; lat. min. 0,34 poll. (Ad.) 
Cyclostoma lamellosum Adams in Atm. Lyc. New- York V. N. 2. p. 54 
et Contrib. to Conch. N. 8. p. 138. **) 
Cyclostomus lamcllosirs Pfr . Consp. N. 348. 
Habitat in insula Jamaica. 
392 79. V. rugulosiis Pfr. 
T. subperforata , cylindraceo - turrita , decollata , tenuis, 
costis longitudinalibus confertis rugulosa, diaphana, cineras- 
centi - albida ; anfr. superst. 4 convexi, lente accrescentes , ad 
suturam canaliculatam denticulati, ultimus subdisjunctus, pone 
aperturam callo lato, antice dentiformi cum penultimo junctus, 
basi obsolete spiraliter sulcatus; apertura verticals, oblique 
*) T. C. Bronnii affini, fasciis angustis fuscis interruptis ornata, sutura 
haud multum crenulata, labro minore. Forsan var.? Alt. 0,55, lat. max. 
0,4, lat. min. 0,3 poll. (Adams 1. c.) 
**) Shell ovate conic , rather short : with several inequidistant unequal 
more or less interrupted spiral lines of brown, of which four or five appear 
on the penult whorl : with rather closely set sharp elevated transverse la- 
mellae , which are more prominent at the sutures , without spiral striae ex- 
cept a few ridges in the umbilicus : apex truncate with the loss of two or 
three whorls: spire with the outlines quite convex: about three and one-half 
whorls remaining , very convex , with a rather deep suture : aperture orbic- 
ular , with two peritremes , of which the outer one is narrow , auriculate 
above, reflected nearly into the plane of the aperture; the inner peritreme 
is rather stout, well produced, a little reflected. The operculum has a spiral 
lamella, which has about four and one- half whorls, and is but little elevated 
and much produced laterally. Mean divergence about 50°. — This shell 
much resembles C. tectilabre , but the outer peritreme is more expanded, 
and the margin of the operculum is not reflected backwards. 
