TUDORA $. 2. 251 
13. 'F.? Adami Bf. 411 
T. perforata, oblongo-conica, decollata, tenuis, subdia- 
phana, longitudinaliter confertissime plicata, pallide cornea, 
'astaneo irregulariter. aspersa, basi saepe castaneo unicingu- 
lata; sutura dense crenulata; anfr. superst. 5— 6 convexius- 
culi, regulariter acerescentes; apertura verticalis, oblique sub- 
ovalis , [ed concolor; perist. subduplex : internum vix distin- 
guendum, saepe obsoletum, externum breviter adnatum, ex- 
pansum, superne angulatum, infra perforationem angustissimum. 
— Operc.? — Long. 15, diam. 1 mill. Ap. intus 4'/, mill. longa. 
(Coll! Nr: 179; 
Cyclostoma crenulatum Gray mss. olim. 
- — Som. Thes. N. 163. p. 148. t. 28. f. 174. 175. *) 
-— A damsi Pfr. in. Zeitschr. f. Mal. 1846. p. 43. 
s — Chemn. cd. 1I. N. 40. p. 48. t. 6. f 
f. 29; 30, 
Cistula columna var. Gray Catal. Cycloph. p. 57. 
Tudora? A4damsi Pfr. Consp. N. 367. 
Habitat in. insula. Jamaica. 
Obs. Differt a C. columna Wood praeter. colorem. forma aperturae, 
latere sinistro non recedentis, peristomate interno obsoleto, externo vix dila- 
tato, margine supero et columellari non aurieulatis. 
14. 'T.? Chemnitzii YVood. 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, mareinibus angulatim 
junetis, supero et columellari plicato - auriculatis. — Operc. 
(ex Sow.) testaceum, anfractibus paucis striatis. — Long. 14, 
diam. 8. mill. Ap. intus 5'/, mill. longa, 4'/, lata. (Mus. 
Cuming.) 
Turbo Chemnitzii Wood Ind. Suppl. t. 6. f. 6. 
Cyclostoma Chemnitz Gray in Wood Suppl. p. 36. 
*) T. turrito-pyramidali, pallida, fuseo-maculata, apice decollato ; anfr. 4 
ventricosiusculis, transversim striatis; sutura crenulata; apertura subobliqua, 
eliptiea, superne subacuminata, peritremate rellexo - patente, superne acumi- 
nato, latere umbilicali flexuoso, sinuato; umbilico parvo. (Sow. l. c.) 
