CHOANOPOMA §. 2. 
161 
Cyclostoma scabriculum Chemn. ed. II. N. 71. : p. 77. (ex parte.) N. 375. 
t. 46. f. 15. 16. 
— amabile Adams Contrib. to Conchol. N. 1. p. 2! 
Choanopoma scabriculum Pfr. in Zeitschr. f. Mai. 1847. p. 107. et 
Consp. N. 232. 
— — Gray Catal. Cycloph. p. 50. N. 4. 
Habitat in insula Jamaica. 
11. Ch, Hillianum Adams. 27 1 
T. iimbilicata, globoso-conoidea, tenuis, costulis spiralibus 
et longitudinalibus confertis regulariter clathrata, scabra, fulvo- 
albida , rufo interrupte fasciata vel lineata ; spira convexo- 
conoidea, vix truncatula; anfr. superst. 4 modice convexi, 
ultimus teres, circa umbilicum mediocrem, apertum, regularem 
validius spiraliter liratus ; apertura subverticalis , circularis ; 
perist. duplicatum : internum vix porrectum , expansiusculum, 
externum limbum formans latum, angulatim expansum, con- 
fertim radiato - plicatum , fusculo - radiatum , superne sinuoso- 
auriculatum , ad anfr. penultimum emarginatum. — Operc. 
testaceum, album, anfr. 4 sensim accrescentibus, margine late 
elevato , swperne anguste angulatim reflexo , oblique striato. — 
Diam. maj. 15, min. 11V 2 5 alt. 10 mill. Ap. intus 5V 2 . , cum 
limbo 10 mill, longa. (Coll. Nr. 110. Spec, authent.) 
Cyclostoma Hillianum Adams in Proc. Bost. Soc. 1845. p. 11. * *) 
— scabriculum Chemn. ed. II. Cycl. i. 10. f. 6 — 8. 
Choanopoma Hillianum Pfr. in Zeitschr. f. Mai. 1847. p. 107. et Consp. 
N. 233. 
— — Gray Catal. Cycloph. p. 52. N. 21. 
/?. Testa alba, fusco - cingulata , anfractu ultimo antice brevissime soluto. 
(Spec, authent.) 
Cyclostoma amandum Adams Contrib. to Conch. N. 1. p. 3. **) 
rotundatis, spiraliter sulcatis, sulcis confertissimis decussatis, asperis; sutura 
distincta ; apertura circulari ; peritremate duplici , interno tenui, externo late 
expanso, undulato , postice undulato-lamellari ; umbilico mediocri ; operculo 
lamella levata spirali. (Sow. 1. c.) 
*) T. subdepressa, Candida, fasciis angustis fuscis interruptis ornata, 
decollata, anfr. reliquis 5 vix connexis, aculeis elongatis decussatim seriatis 
elegantissime insculptis ; apertura ab anfr. penultimo remota; labro latissime 
planulato, plicato ; umbilico lato, profundo ; operc. albo, lamella spirali pro- 
cera ornato. Div. 110°; alt. 0,32, lat. max. 0,47, min. 0,37 poll. (Adams 
1. c.) 
**) Shell short, globose - conic ; dingy white with three principal and 
often other brown more or less interrupted spiral bands; with quite regular 
prominent lamellae of growth, which are decussated and aculeated by very 
11 
