XVIII 
/?. auriculato 
b. expanso simplice 
c. — auriculato 
d. recto, marginibus disjunctis, 
a. rotundatis. 
1. Anfractu ultimo basi ro- 
tundato 
2. Anfractu ultimo basi ca- 
rinato 
/?. sub parallel is 
B. Peristomate basi appendiculato 
Pomatias 493. 496. 497. 
Pomatias 498. 501. 
Pomatias 492. 494. 495 
Pomatias 499. 
Omphalotropis 503 — 508. 
Acicula 1—5. 
Geomelania 6 — 26. 
Oharacteribus insolitis praedita. 
Anfractu ultimo strangulato . . . 
Tubulo suturali in anfr. ultimo praedita 
Anfractu ultimo carina umbilicali 
munito 
Umbilico clauso 
Alycaeus. 
Pterocyclos hispidus, Cyclotus Tay- 
lorianus et rostellatus , Alycaeus 
strangulatus, constrictus. 
Cyclotus Jamaicensis et affines , Cy- 
clophorus euomphalus, Cataulus, 
Omphalotropis (et Stoastoma). 
Cyclophorus turbo, ictericus , Lepto- 
poma minutissimum, Otopoma clau- 
sum , Cyclqstomus bicarinatus , zo- 
natus , Choanopoma pudicum , Tu- 
dora ovata, pupoides, Chondropoma 
Shuttleworthi , Ottonis, Bourciera. 
