104 
CTENOPOMA. 
5. Ct. immei’Siini Gundlaeh> f 
„Quod attinet ad testam persimile C. ruguloso Pfr., sed 
diversum operculi structura. — Operc. spira sensim ad nu- 
clei! m immersa et sulco suturali amplo.“ (G.) 
Cyclostoma imrnersum Gundl in Malak. Bl. IV. 1857. p. 42 et in Poey 
Memor. II. p. 39. 
Habitat prope Matanzas insulae Cubae. 
6. Ct* deflelesis Ciwndlaeli. 
T. subperforata, ova to -turrit a, truncata, tenuiuscula, liris 
irregularibus cincta, plicis confertis, irregulariter fasciculatis, 
liras transgredientibus et suturam denticulatain formantibus 
lamellata, cinerascenti-albida ; spira regulariter attenuata, late 
truncata; anfr. superst. S 1 /^ (amissis 4), convexi, ultimus basi 
scabrius liratus , antice disjunctus, pone aperturam nodulo 
striato cum penultimo junctus; apertura verticalis, ovali-rotun- 
data; perist. duplex: internum parum prominens , externum 
concentrice striatum, irregulariter patens et undulatum , parte 
supera usque infra perforationem deficiente. • — Operc. pla- 
num. — Long. 6—8, diam. 3 — -4 mill. Ap. 2 J / 2 mill, longa. 
(Coll. Nr. 177.) 
Cyclostoma deficiens Gundl. in Malak. Bl. IV. 1857. p. 42 et in Poey 
Memor. II. p. 39. 
Habitat prope Matanzas insulae Cubae. 
7. Ct. eoroaiataam Poey. 
T. subobtecte perforata, oblongo-turrita, truncata, tenuius- 
cula, costulis confertis lamellaribus , ad suturam prominentio- 
ribus sculpta, diaphana, albida; anfr. superst. — 4 convexi, 
ultimus antice subsolutus, nodulo reflexo cum penultimo jun- 
ctus, basi carinis 2 lamellosis munitus ; apertura sub verticalis, 
fere circularis; perist. duplex: internum vix prominens, ex- 
ternum continuum, patens, concentrice striatum, margine vn- 
dul at o-incisum. — Operculum planum, terminale. — Long. 8, 
diam. 4 mill. Ap. diam. 2 1 / 4 mill. (Coll. Nr. 178.) 
striato cum anfr. contiguo junctus , basi spiraliter sulcatus ; apertura verti- 
calis, parva, oblique ovalis ; peritr. duplicatum, internum rectum, externum 
strictum, vix patens. — Operc. testaceum, nucleo parum excentrico, anfr. 4 
oblique sulcati, sutura profunda disjunct! — Long. 10—11, diam. 5 mill. 
Ap. 3 mill, longa, 2 lata. — Hab. Matanzas, Cardenas etc. (Poey h c.) 
