TUDORA §. 3. 
255 
19. T. ? creniilogR Adams. 417 
T. perforata, elongato-conica , solida, truncata, longitudi- 
naliter confertim costato - striata, coerulescenti-albida , fusculo- 
nebulosa et lineis rufis in ziczac flcxis elegantissime picta; 
sutura parum impressa, confertim denticulata; anfr. superst. 
5 parum convexi, ultimus basi fuscus; apertura verticalis, 
ovalis, superne subangulosa, intus livida; perist. duplex : inter- 
num expansum, appressum, rubrum, externum album, dilatato- 
expansum, superne et infra columellam angulatim productum. 
— Operc. ? — Long. 21, diam. 9-V» mill. Ap. 6 '/^ mill. longa. 
(Mus. Cuming.) 
Cyclostoma crenulosum Adams Contrib. to Conch. N. 1 . p. 12. *) 
Tudora? crenulosa Pfr. Consp. N. 372. 
Habitat in insula Jamaica. 
20. T.? caneseens Pfr. 418 
T. subperforata, oblongo-turrita , truncatula, solida, lineis 
longitudinalibus et spiralibus elevatis regulariter clathrata, 
parum nitida, griseo - albida ; spira elongata; sutura tuberculis 
confertis albis crenata ; anfr. superst. 7 vix convexiusculi, 
ultimus basi attenuatus, circa perforationem obsoletam distinc- 
tius spiraliter sulcatus ; apertura verticalis , angulato - ovalis, 
intus fusco- carnea; perist. duplex : internum vix porrectum, 
externum undique breviter expansum , superne angulatum, 
anfractui penultimo breviter adnatum. — Operc.? — Long. 
20, diam. 7 mill. Ap. 5 mill, longa, 4 lata. (Mus. Cuming.) 
Cyclostoma canescens Pfr. in Proc. Zool. Soc. 1851. Jul. 
— — Chemn. ed. II. N. 284. t. 38. f. 36. 37. 
Tudora canesccns Pfr. Consp. N. 373. p. 65. 
Habitat . . .? 
*) Shell much elongated, conic; brownish sometimes with transverse 
darker clouds and slender zigzag spots , with a band of the same around 
the anterior part ; very coarsely striated transversely, the upper ends of the 
raised lines being developed into very numerous sutural crenulations, spiral 
lines wanting ; spire with nearly rectilinear outlines ; apex truncate with the 
loss of three whorls ; five whorls remaining , with a moderately impressed 
suture, which is nearly concealed by the crenulations; aperture ovate-orbic- 
ular; inner peritreme orange red, on the right side coalescing with the 
outer peritreme, which is white, moderately expanded, sharp, concave, more 
produced and inflected above and at the lower end of the left side ; umbi- 
licus very small. Mean divergence 35°; length 0,83; greatest breadth 0,45 ; 
least breadth 0,35 inch (Adams 1. c.) 
