276 CISTULA 5$. 7. 
tura vertiealis, subcireularis; perist. duplex :internum vix por- 
rectum, externum horizontaliter expansum, superne in rostrum 
recurvatum dilatatum, ad anfr. penultimum breviter interrup- 
tum, latere sinistro inciso -crenulatum. — Operc.? — Long. 
14, diam. 6 mill. Ap. 4 mill. longa. (Mus. Cuming.) 
Cyclostoma trochlea Pfr. iu Proc. Zool. Soc. 1851. Jul. Nec Bens. 
— trochleare Pfr. iu Chemn. ed. II. N. 315. t. 41. f. 7. 8. 
Cistula? trochlearis Pfr. Consp. N. 409. p. 68. 
Habitat ...» 
31. €. Shepardiana Adams. 
T. perforata, oblongo-turrita, breviter truncata, tenuius- 
cula, lineis obtuse elevatis spiralibus, costulisque longitudina- 
lihus confertissimis (quinta vel septima quavis validioribus) 
illas transgredientibus sculpta, cinnamomea; spira regulariter 
attenuata; sutura. costularum fasciculis crenata; anfr. "superst. 
5 convexi, ultimus antice longe solutus, deflexus, dorso serrato- 
carinatus, basi rotundatus ; apertura subverticalis, ovalis; perist. 
aurantiacum ,. duplex : internum breviter expansum, externum 
angulatim. patens, undulatum, superne anguloso-dilatatum. — 
Opere. normale. — Long. 12, diam. 5'/, mill. Ap. 3'/, mill. 
longa, 3 lata. (Coll. Nr. 198.) 
Cyclostoma Shepardianum Adams Contrib. to Conch. N. 6. p. 92. *) 
— — Chemn. ed. II. N. 283. t. 38. f. 40— 42, 
Cislula Shepardiana  Pfr. Consp. N. 410 
f. Testa albida, seriatim castaneo-punctata; perist. albido, castaneo-radiato : 
Cyclostoma Shepardianum var. Chemn. l. c. f£. 43—45. 
Habitat in insula. Jamaica. 
*) Shell long ovate-conie: color very various, from horn color to redd- 
ish brown or slate color, with paler and darker lines alternating , with the 
lip red or yellowish white: with very closely set fine raised lines, which are 
traversed and partially interrupted by numerous finely waved or zigzag spi- 
ral striae; with the upper ends of the transverse lines somewhat fascicled : 
spire long, with the outlines a little curvilinear: apex truncate, with the 
loss of — whorls: remaining whorls five to five and one-half, very convex, 
with a deep suture; the last whorl detached at its extremity from the penult 
whorl: aperture ovate-orbicular: inner peritreme moderately produced ; outer 
peritreme moderately expanded, auriculate above, almost wanting on the 
left side: umbilicus very narrow, extending through the truncate apex. Mean 
divergence 25 — 35?; length 0,32 — 57; greatest breadth 0,18 — 0,31; least 
breadth 0,13 —0,26 inch. (Adams 1. c.) 
