268 
CISTULA §. 4. 
impressa; spira fere rectilinearis ; apex truncatus; anfr. superst. 
5 ; apertura ovato-orbicularis ; perist. duplex : internum subpor- 
rectum, externum subexpansum, concavum, acutum, utraque 
lateris sinistri extremitate in angulum productum et inflexum. — 
Diverg. media 28°; long. 0,58; lat. max. 0,26; lat. min. 0,2 
poll. (Ad.) 
Cyclosioma pauper atum Adams Contrib. to Conch. N. 1. p. 13. *) 
Cistula? paupcrata Pfr. Consp. N. 393. 
Habitat in insula Jamaica. 
439 15. C*? bilabrls Men Ike. 
T. subimperforata , ovato-oblonga, decollata, solida, striis 
elevatis longitudinalibus et spiralibus argute decussata, albida 
vel fulvescens; anfr. superst. 4 — 5 convexiusculi, ultimus basi 
sulcis concentricis validioribus notatus ; apertura verticalis, 
oblique ovalis ; perist. duplicatum : internum breviter porrec- 
tum, externum incrassatum, breviter patens, superne angula- 
tum, album vel rufo - nigricans. — Operc. ? — Long. 13 7 2 > 
diam. 67 2 mill. Ap. 6 mill, longa. (Mus. Cuming.) 
Cyclostoma bilabre Menke Moll. Nov. Holl. p. 8. N. 18. **) 
— — Chemn. ed. II. N. 45. p. 52. t. 6. f. 22. 23. 
— rufilabrum Beck mss. Sow. Thes. N. 45. p. 106. t. 24. 
f. 61. ***) 
— — Pot. et Mich. Gal. Douai I. p. 241. t. 24. f. 20. 21 ? 
Cistula rufilabris Gray Catal. Cycloph. p. 59. N. 9. 
— ? bilabris Pfr. Consp. N. 394. 
/?. Testa minore; long. 10y 2 , diam. 5 3 / 4 mill.; ap. intus 3 s / 4 mill, longa. 
(Mus. Menke.) 
Habitat in ora orientali Novae Hollandiae (Lehmann, Menke); 
St. Croix? (Beck, Sowerby.) 
*) Shell very elongate and slender , conic ; color — ? ; very coarsely 
striated transversely, not crenulated in the suture, spiral lines wanting ; spire 
with nearly rectilinear outlines; apex truncate with the loss of three? whorls; 
five whorls remaining, with a moderately impressed suture ; aperture ovate- 
orbicular; inner peritreme on the right side less elevated above the outer 
one, which is moderately expanded, concave, sharp, produced into an angle 
and reflected at each extremity of the left side ; umbilicus very small , con- 
cealed by the lip. (Adams 1. c.) 
**) T. ovato - conica , apice decollata, imperforata, solidiuscula ; anfr. 5 
convexis , porcis longitudinalibus transversisque densis eleganter texatis ; 
perist. duplici : externo reflexo. — Long. 4, 5 ; lat. 2, 5 lin. (Menke 1. c.) 
***) T. oblonga, cylindracea, fulvescente, apice decollato; anfr. 4—5 
spiraliter sulcatis, sulcis decussato-crenulatis, lateribus subrotundatis ; sutura 
inconspicua; apertura elliptica; peritremate incrassato , subexpanso, nigri- 
cante. (Sow. 1. c ,) 
