254 
TUDORA §. 3. 
neis obtusis spiralbus subdecussata, fusco-albicla, rufo seriatim 
punctata et 1— 2 - fasciata ; spira turrita, late truncata ; sutura 
confertim crenulata; anfr. superst. 4 'A — 5 convexiusculi ; aper- 
tura verticalis, oblique ovalis; perist. duplex : internum expan- 
siusculum, album, externum album, luteum vel rufo-ignescens, 
dilatatum , rectangule patens , ad anfractum penultimum exci- 
sum, margine columellari sinuato-reflexo, auriculato. — Operc. 
praecedentis. — Long. 18, diam. 8 mill. Ap. 6 mill, longa. 
(Coll. Nr. 182.) 
Cyclostoma Augustac Adams Contrib. to Conch. N. 1. p. 7. *) 
— — Chemn. ed. II. N. 311. t. 40. f. 34. 35. 
Tudora Augustae Pfr. Consp. N. 371. 
/?. Testa aequaliter decussata, nitente, brunneo et albido variegata. 
Cyclostoma nitens Adams Contrib. to Conch. N. 1. p. 8. **) 
— Augustae var. Adams ibid. N. 9. p. 180. 
Habitat in insula Jamaica. 
Obs. Species praecedenti tam affinis, ut characteribus essentialibus 
vix distingui possit. An ejus varietas? 
*) Shell much elongated, conic; shining, whitish or brownish, with six 
spiral series in three pairs of narrow dark brown spots which are either 
oblong or sagittate, the middle pair being more or less confluent, — Avith 
also a broad band and some more or less distinct lines of dark brown 
around the umbilical region ; with transverse striae very strong on the upper 
whorls, and feeble and distant on the last whorl, decussated by faint spiral 
striae ; spire with the outlines scarcely convex ; apex truncate with the loss 
of two or three whorls; five whorls remaining, with a moderately impressed 
suture , which is subcrenulate by the enlargement of the upper ends of the 
transverse lines in twos and threes ; aperture ovate-orbicular, oblique ; inner 
peritreme a little produced and reflected; outer peritreme well expanded, 
white, in some yellowish, more or less concave , much produced above and 
inflected forming a deep pit, before the umbilicus reflected far back into a 
deep sinus, with an alate expansion next to the sinus; umbilicus very small. 
Mean divergence 38°; length 0,9; greatest breadth 0,52; least breadth 0,4 
inch. (Adams 1. c.) 
*'*) Shell moderately elongated, conic; shining, brownish white with 
white spots , and spiral interrupted bands of pale brown , deep orange near 
the aperture; very finely decussate with nearly equal slightly elevated lines, 
but on the upper whorls the transverse lines are more prominent and the 
spiral lines obsolete; spire with the outlines slightly convex; apex truncate, 
with the loss of two or three whorls; four whorls remaining, with a well 
impressed suture; aperture large ovate-orbicular, moderately angulated above; 
inner peritreme scarcely distinct , reflected upon the outer peritreme , which 
is reflected nearly into the plane of the aperture, is moderately spreading, 
sharp, thickened , narrower and bent back opposite the umbilicus , which is 
small. Mean divergence 40°; length 0,56; greatest breadth 0,36; least 
breadth 0,26 inch. (Adams 1. c.) 
