CYCLOSTOMUS $. 10. 235 
73. €. Jayanus Adams. 386 
T. profunde rimata, ovato-conica, solidiuscula, longitudi- 
naliter confertim plicata, parum nitida, albida, strigis latis, 
obliquis, angulosis vel fasciis interruptis fuscis ornata; spira 
elato-conica, vix truncatula vel integra; sutura superne minute 
dentieulata, anfractuum inferiorum subsimplex; anfr. 4'/, — 6 
convexi, ultimus rotundatus, basi ultra axin subproductus; 
apertura vix obliqua, subcircularis, intus nitida, fulvida, nebu- 
losa; perist. duplex, lateritium, album vel fuscum : internum 
continuum, late expansum, appressum, externum latius, hori- 
zontaliter patens, superne sinuato-angulatum, ad anfr. penulti- 
mum breviter interruptum. — Opere. praecedentium. — Long. 
20, diam. 11 mill. Ap. intus 7 mill. longa. (Coll. Nr. 161.) 
Cyclostoma solidum 44dams Contrib. to Conch. N. 1. p. 7. *) Nec Menke. 
— Jayanum .4dams Ibid. N. 4, p. 50. 
— — Chemn. ed. II. N. 310. t. 40. f. 32, 33. 
-— histrio Pfr. iu Proc. Zool. Soc. 1851. Jul. 
Cyclostomus Jayanus Pfr. Consp. N. 345. 
Habitat in. insula Jamaica. 
71. €. Banksianus Sowerby. 387 
T. breviter rimato- perforata, ovato-conica, tenuiuscula, 
longitudinaliter confertissime plicatula (plicis interdum. undu- 
latis, nonnullis subregulariter distantibus validioribus), pallide 
fuscescens, aurantio-strigata, vel nigro-coerulea, lineis inter- 
ruptis rufis obsolete cincta; spira conica, truncatula; sutura 
crenulata; anfr. superst. 3!'/, convexi, ultimus rotundatus, an- 
tice fusco-aurantiacus, circa umbilicum angustissimum spiraliter 
suleatus; apertura verticalis, circularis, intus sanguinea; perist. 
sanguineum, duplieatum : internum expansiusculum, externum 
breviter expansum, ad anífr. penulümum breviter excisum, 
*) Shell long, ovate-conic; whitish or brownish, with several narrow 
more or less interrupted sometimes nearly obsolete spiral brown lines, often 
with large irregular zigzag oblique spots of dark brown; with very closely 
set strong rounded transverse raised lines, which are a little larger in twos 
and threes at the summit like à minute crenulation; spire with moderately 
conyex outlines; apex truncate with the loss of two whorls; four and one- 
half whorls remaining, quite convex, with a well impressed suture; aperture 
nearly circular; inner peritreme slightly produced and reflected; outer peri- 
treme broad, white or pale yellow, a little concave, widest NBOvG and on the 
left side at the bottom of which it is subangular; umbilicus very small. 
Mean divergence 50*; length 0,78; greatest breadth 0,55, least breadth 0,4 
inch. (Adams l. c.) 
