TUDORA §. 2. 
251 
13. T.? Atlunisi Pfp. 411 
T. perforata, oblongo - conica , decollata, tenuis, subdia- 
phana, longitudinaliter confertissime plicata, pallide cornea, 
castaneo irregulariter aspersa, basi saepe castaneo unicingu- 
lata ; sutura dense crenulata ; anfr. superst. 5 — 6 convexius- 
culi, regulariter accrescentes ; apertura vertiealis, oblique sub- 
ovalis , intus concolor ; perist. subduplex : internum vix distin- 
guendum, saepe obsoletum, externum breviter adnatum, ex- 
pansum, superne angulatum, infra perforationem angustissimum. 
— Operc.? — Long. 15, diam. 7 mill. Ap. intus 4'/* mill, longa. 
(Coll. Nr. 179.) 
Cyclostoma crcnulalum Gray mss. olim. 
— — Sow. Thes. N. 163. p. 148. t. 28. f. 174.175.*) f 
— Adamsi Pfr. in Zeitschr. f. Mai. 1846. p. 43. 
— — Chemn. ed. II. N. 40. p. 48. t. 6. f. 20. 21. t. 46. 
f. 29. 30. 
Cistula columna var. Gray Catal. Cycloph. p. 57. 
Tudora? Adamsi Pfr. Consp. N. 367. 
Habitat in insula Jamaica. 
0 b s. Difl’ert a C . columna Wood praeter colorem forma aperturae, 
latere sinistro non recedentis, peristomate interno obsolcto, extcrno vix dila- 
tato, margine supero et columellari non auricnlatis. 
14. T,? Clieimiiizii Wood. 412 
T. perforata, ovato - conica , decollata, solida, laevigata, 
albida, fascia 1 lata fusca (vel 4 interruptis) ornata; anfr. 
superst. 4 — 5 convexi , ultimus circa perforationem angustam 
sulcis nonnullis spiralibus exaratus; apertura oblique ovalis; 
perist. subduplicatum : internum tenue, non prominens, exter- 
num breviter expansum, continuum, marginibus angulatim 
junctis, supero et columellari plicato - auriculatis. — Operc. 
(ex Sow.) testaceum, anfractibus paucis striatis. — Long. 14, 
diam. 8 mill. Ap. intus 5*/ a mill, longa, 4 1 / 2 lata. (Mus. 
Cuming.) 
Turbo Chemnitzii Wood Ind. Suppl, t. 6. f. 6. 
Cyclostoma Chemnitzii Gray in Wood Suppl. p. 36. 
*) T. turrito-pyramidali, pallida, fusco-maeulata, apice decollator anfr. 4 
vcntricosiusculis, transversim striatis; sutura crenulata ; apertura subobliqua, 
elliptica, superne subacuminata, peritremate rellexo -patente, superne acumi- 
nate, latere umbilicali flexuoso, sinuato; umbilico parvo. (Sow. 1. c.) 
