ADAMSIELLA.— Plate 1. 



narrow, rounded, decussately striated, last whorl 

 uncoiled; aperture very small, lip very broadly cal- 

 lously reflected. 



Cyclostoma monstrositm, Adams, Contr. to Concb. no. 1. 

 p. 5. 

 Adainsielln mou-strom, Pfeiffer. 



Hah. Jamaica. 



A semitransparent delicately-painted shell of narrow 

 subtubidar whorls, of which the last is partially unrolled, 

 with the lip unusually broadly flatly reflected. 



Species 5. (Fig. a, I, Mus. Cuming.) 



Adamsiella variabilis. Adams, testa profunde um- 

 hilicatd, ovato-turbinatd, fidvescente, fusco varie fas- 

 ciatd,juxtn siilnras arliculald, anfructihus subatigus- 

 tis, rotundatis, striis eleoutis minute decussatis, labro 

 ditplici, modlce expanso. 



The variable Adamsiella. Shell deeply umbilicated, 

 ovately turbinated, fuhous, variously banded with 

 brown, articulated next the sutures, whorls rather 

 narrow, rounded, minutely decussated with I'aised 

 striae, lip duplex, moderately expanded. 



Ci/clostoma articulatum, Gray (not of Draparnaud). 

 Cyclostoma variabile, Adams. 

 Cijclostoma mutatam-, Adams. 

 Choanopoma articulatum, Pfeiffer. 

 Adamsiella variabilis, Pfeifl'er. 



Ilab. Jamaica. 



This species, as may be seen by our figures, varies in 

 form, and the decussating stria; are stronger in some 

 specimens than in others. The painting consists almost 

 invariably of bands, with an articulation of spots below the 

 sutures. 



Species 6. (Fig. a, b, Mus. Cuming.) 



Adajisiella Peaeman.eana. Adams, testa aperte pro- 

 fundi umbilicatd, oblongo-turritd,pellucido-albd, rufa- 

 fusco minute lentujinosd et radiatd, atifractibus sub- 

 angustis, rotundatis, striis pulchri decussatis, longi- 

 tudinalibus lamelliformibus, anfractu ultimo soluto ; 

 aperlurd parvd, labro eleganter Jimbriato. 

 Peaeman's Adamsiella. Shell openly deeply umbili- 

 cated, oblong-turreted, transparent-white, minutelv 

 freckled and rayed with red-brown, whorls i-ather 

 narrow, rounded, beautifully decussated with stri*, 

 of u'iiich the longitudinal are raised into lamellai, 

 last whorl uncoiled ; aperture small, lip elegantly 

 fimbriated. 



Cyclostoma Pearmanaanum, Chittv, Contr. to Conch, no. 1. 



p. 3. 



Cyclostoma longicolle, Pfeifl'er. 



Adamsiella Pearmanceana, Pfeifl'er. 

 Ilab. Jamaica. 



In this most elegant species the longitudinal stria; are 

 raised throughout into fine thread-like lamellae, while the 

 frill encircling the aperture is removed some little distance 

 back from the lip. 



Species 7. (Fig. a, b, Mus. Cuming.) 



Adamsiella intermedia. Adams, testa suhaperte pro- 

 fundi umbilicatd, oblong o-turr.itd, fulvescente-albd, 

 semipellucidd, rufo-Jusco interrupte fasciatd et arti- 

 culatd, anfractibus rotundatis, striis elevatis reticulato- 

 decussatis ; aperturd parviusculd, labro calloso-fim- 

 briato. 



The intermediate Adamsiella. Shell rather openly 

 deeply umbilicated, oblong turreted, fulvous white, 

 semitransparent, interruptedly banded and articu- 

 lated with red-brown, whorls rounded, reticulately 

 decussated with raised strise ; aperture rather small, 

 lip callously fimbriated. 



Cyclostoma intermedium, Adams, Contr. to Conch, no. 1. 

 P-5. 

 Adamsiella intermedia, Pfeiffer. 



liab. Jamaica. 



Characterized among other features by the intemipted 



slightly-waved style of tiie painting. 



Species 8. (Mus. Cuming.) 



Adamsiella Binneyana. Adams, testa prof unde umbili- 

 catd, ovato-tnrritd, subcylindraced, fulvescente-albd, 

 medio fascia lata castaned cingulatd, anfractibus con- 

 vexis, sub lente minute decussatis, labro calloso-refle.vo, 

 albo. 



Binney's Adamsiella. Shell deeply umbilicated, ovately 

 turreted, subcylindrical, yellowish-white, encircled 

 round the middle with a broad chestnut band, whorls 

 convex, minutely decussated beneath the lens, lip 

 callously reflected, white. 



Cyclostoma Binneyanum, Adams, Pfeifl'er, Zeitschr. fiir 

 Malac. 1846, p. 47. 

 Cyclostoma pulchrins, Adams. 

 Choanopoma Binneyanum, Gray. 

 Adamsiella pulchrior, Pfeiffer. 



Hub. Jamaica. 



This apparently smooth shell is especially distinguished 

 by its single broad chestnut band. 



