ADAMSIELLA §. 2. 
171 
§. 2 . 
4. A. variabilis Adams. 285 
T. anguste umbilicata, ovato-pyramidalis , plerumque de- 
collata, plicis longitudinalibus confertissimis striisque transver- 
sis decussata, lutescens, seriatim fusco-maculata, superne sae- 
pius yiolacea; sutura irregulariter et distanter crenata; anfr. 
superst. plerumque 4 convexi , ultimus teres ; apertura verti- 
cals, circularis; perist. sub dupi ex : internum breve, vix por- 
rectum, externum continuum, undique subaequaliter patens, 
anfractui penultimo appressum, superne angulatum. — Operc. 
normale. — Long. 14, diam. 8 mill. Ap. intus 4, cum limbo 
6 mill, longa. (Coll. Nr. 127.) 
Cyclostoma articulatum Sow. Thes. N. 144. p. 142. t. 28. f. 160. 
161. *) Nec Gray. 
— variabile Adams Contrib. to Conch. N. 1. p. 3. (Ex spec. 
authent.) 
— Chemn. ed. II. N. 276. t. 38. f. 7. 8. 
— mutatum Adams Contrib. to Conch. N. 9. p. 154. 
Choanopoma articulatum Pfr. in Zeitschr. f. Mai. 1847. p. 107. 
— — Gray Catal. Cycloph. p. 52. N. 17. 
Adamsiclla variabilis Pfr. Consp. N. 246. 
Habitat in Demerara (Sowerby), Jamaica (Adams). 
0 b s. Variat striis decussantibus magis minusve confertis et elevatis et 
peristomate magis minusve incrassato, reflexo , saepe concentrice 
striato. 
5 . A. Gray ant* Pfr. 286 
T. anguste umbilicata, ovato-pupaeformis, decollata, satu- 
rate violaceo-fusca ; sutura remote albo-nodulosa ; anfr. superst. 
4 r / 2 convexi, supremi valide costulati, striis spiralibus tenuibus 
decussati, sequentes regulariter et confertim decussati, ultimus 
penultimum non superans; apertura verticalis, circularis; perist. 
subduplicatum, album, flavum vel rubellum : internum simplex, 
breviter porrectum, externum anfractui penultimo brevissime 
adnatum, undique aequaliter plane expansum. — Operc. nor- 
iV ). T. oblonga, pyramidali , spira subacuminata, plerumque decollata; 
anfr. 4 — 7 rotundatis, transversim striatis , albidis et articulatim fusco-mar- 
moratis ; sutura distincta ; apertura subcirculari ; peritremate angusto, reflexo ; 
umbilico mediocri ; operc, testaceo , tenui , extus lamina spirali conspicua. 
(Sow. 1. c.) 
