258 
TUDORA §. 3. 
Cyclostoma disjunctum Morelet Test, noviss. p. 23. N. 58. *) Nec Math, 
nec Moric. 
— Morelletiana Petit in Journ. Conch. I. p. 46. 
— Moreleti Pfr. in Zeitschr. f. Mai. 1850. p. 88. 
— Moreletianum Chemn. ed. II. N. 272. t. 37. f. 27. 28. 
Tudora Moreletiana Pfr. Consp. N. 377. 
Habitat in Xsla de Pinos prope Cubam. 
423 25 . T. avena Adams* 
T. subperforata, turrita, truncata, longitudinaliter confer- 
tim plicata, fuscula, rufo seriatim maculata; sutura fasciculis 
plicarum prominentibus albo-crenulata ; anfr. superst. 5 parum 
convexi, ultimus antice solutus, dorso carinatus; apertura ver- 
ticalis , ovalis ; perist. duplex : internum vix prominens , exter- 
num expansum, marginibus superne angulatim junctis, dextro 
latiore. — Operc, normale. — Long. 8 ! / 2 , diam. 37 8 mill. 
Ap. 2 mill, longa. (Coll. Nr. 184.) 
Cyclostoma avena Adams Contrib. to Conch. N. 1. p. 6.**) 
— — Chemn. ed. II. N. 380. t. 46. f. 33-35. 
Tudora avena Pfr. Consp. N. 378. 
Habitat in insula Jamaica. 
*) T. oblongo-conoidea, umbilicata, truncata, regulariter costulato -pli- 
cata, fusco-violacescens vel pallide fulva; lineolis saepissime rubellis sub- 
interruptis fasciata; spira turrita; anfr. 4'/ 2 — 5 convexi, ultimo ad umbilicum 
planulato, subporrecto, disjuncto, sursum carinato. Sutura valde crenulata ; 
apertura ovalis. Perist. duplex: internum lineare; externum subdilatatum, 
liberum, margine supero angulato, reflexiusculo , subcanaliculato , carinae 
affixo. — Long. 15, diam. 7 mill. (Morelet 1 c.) 
**) Shell small, elongate; whitish, more or less tinged with brown, 
with numerous small distant brown dots in spiral series on the lower whorls, 
on the upper whorls blueish gray ; with closely set transverse moderately 
elevated lines , some of which , in twos or rarely in threes, are more deve- 
loped at the sutures into small white crenulations ; spire with moderately 
convex outlines ; apex truncate with the loss of two or three whorls ; about 
four and one-half whorls remaining , very convex , with a deep suture ; last 
whorl much detached from the penult whorl near the aperture; aperture 
suborbicular, contracted a little on the left side; inner peritreme a little 
produced; outer peritreme rather small, much less extended on the left than 
on the right side, not reflected quite back to the plane of the aperture, pro- 
duced above into a concave angle; umbilicus very small. Mean divergence 
23°; length 0,32; greatest breadth 0,14; least breadth 0,11 inch. (Adams 1. c.) 
