240 
CYCLOSTOMUS §.11. 
§. 11 . 
394 81. C. Eangelinui Poey. 
T. perforata, eonico-turrita, breviter truncata, tenuiuscula, 
lineis elevatis spiralibus et confertioribus longitudinalibus (in 
anfr. ultimo obsoletioribus) sculpta, diaphana, lutescenti-cornea, 
lineis castaneis spiralibus permultis, hinc inde in fascias con- 
junctis picta, interdum omnino lutescens vel vinosa; sutura 
crenis validis albis fasciculatis munita; anfr. superst. 5 con- 
vexi, ultimus rotundatus ; apertura subverticalis, ovali-rotunda ; 
perist. duplex : internum continuum , breviter porrectum , ex- 
pansiusculum , externum breviter patens, superne subauricula- 
tum, infra anfr. penultimum excisum. — Operc. C. costulati 
Z. — Long. 227.2, diam. 12 mill. Ap. fere 8 mill, longa, 
6/' 2 lata. (Coll. Nr. 167.) 
Cyclostoma RangeVmum Poey Memorias hist. nat. Cuba I. t. 8. f. 13— 19. 
— — Chcmn. ed. II. N. 388. t, 47. f. 17-19. 
Cyclosfomus Rangel'inus Pfr. Consp. N. 350 a. 
Habitat in insula Cuba (Poey). 
395 82. CJ. retrorgug A®I®stas. 
T. subperforata, ovato - oblonga , tenuis, truncata, lineis 
spiralibus et costis longitudinalibus confertis arete clathrata, 
asperata, non nitens, pallide cornea, rufo irregulariter punctata 
et strigata; sutura subcanaliculata , denticulata; anfr. superst. 
4 ventrosi, ultimus non solutus, teres , circa perforationem 
liris 4 — 5 fortioribus munitus; apertura verticalis, circularis; 
perist. multiplex, concentrice striatum, album, fornicatim late 
retroflexum, canalem posteriorem formans, ad anfractum pen- 
ultimum excisum, superne angulatum. — - Operc. terminale, 
testaceum, planum, canaliculate - spiratum , nucleo vix excen- 
trico. — Long. 16 — 1.7, diam. 9 mill. Ap. 5, c. perist. 8 mill, 
longa. (Coll. Nr. 168.) 
Cyclostoma rclrorsum Adams Contrib. to Conch. N. 6. p. 91. *) 
more distant on the upper whorls ; spire with moderately convex outlines ; 
apex truncate with the loss of two or three whorls ; about three and one- 
half whorls remaining, quite convex, with a rather deep suture; last whorl 
a little detached from the preceding near the aperture ; aperture like that 
of C. Wilkinsonii , but smaller, with the outer peritreme a little wider pro- 
portionally and without spots ; umbilicus very narrow, but extending through 
Mean divergence about 25°; length 0,26 ; greatest breadth 0,1 5 ; least breadth 
0,11 inch. (Adams 1. c.) 
*) Shell subovate: horn colour, with small irregular flames of brown, 
