ADDENDA. 419 
Cyclostoma vespertinum Morelet "Test. noviss. IT. p. 19. N. 128. 
Habitat ruinas Palenqueanáas in sylvis prope Chiapa jacentes. 
Obs. ,Differt a C. Sagra Orb. sculptura eminentiore, sutura denticu- 
lata, peristomate tenui, non reflexo, etc.* 
* 
p. 283. l. 18 lege Cyclost. simplex Chemn. ed. II. N. 393. (Nec 390.) 
286. Cyclost. semilabris ( Lam.) Chenu l. c. t, 1. f. 1. 
p. 296. Chondropoma Ottonis B. Synon.: Cyclost. petricosum Morelet 
'Test. noviss. II. p. 19. N. 130? (,'T. obtecte umbilicata, ovato- 
conoidea, tenuis, confertissime granulato-striata, corneo-grisea 
vel fulvescens, lineolis pallide rubigineis subinterruptis multi- 
fasciata; anfr. 4 convexi, ultimo ventricoso, basi spiraliter 
striato. Apertura regulariter ovalis, intus callo nitide albo 
- 
limbata; perist. lamellosum, expansum, fimbriatulum, margine 
dextro sursum breviter producto, semiplicato, canaliculato ; 
columellari emarginato, angulatim plicato, appresso, cum altero 
callo diffuso, lamelloso, umbilicum tegente, juncto. — Long. 
14, diam. 7 mill. — Hab. ripas fluvii Almendares, 9 millibus 
a civitate Habanensi distantis. *) 
p. 296 addatur: 
34. C€homndropoma? semienanumnm Norelet. 491 a. 
T. obtecte umbilicata, ventrieuloso-conoidea, solidula, 
albida, apicem versus erosum pallide fulvescens, rugis con- 
fertissime  ecrispis. et sulcis decurrentibus latioribus aspera; 
anfr. 4 convexi, sutura profunda discreti, ultimus ventriculo- 
sus, basi spirahter distinetius rugatus; apertura circularis, 
intus nitida, alba; perist. subduplex, margine externo breviter 
expanso, cireulatim canaliculato, sursum dilatato, ad umbilicum 
fere tectum angulatim plicato. — Long. 13, diam. 5 mill. 
(Mor.) 
Cyclostoma semicanum Morelet-'Test. uoviss. IL. p. 20. N. 131. 
Habitat in insula Pinorum prope Cubam. 
35  €Chondropoma? sericatum Worelet. ]- 491b 
T. profunde umbilicata, ventricoso-conoidea, apice decol- 
lata, sericina, semidiaphana, tenuis, rugis confertissime. crispis 
et strigis nonnullis in ultimo anfractu decurrentibus asperulata, 
fulvo-rubella, obscure multifasciata; anfr. 4 convexi, sutura 
profunda discreti, ultimus turgidus, cirea umbilieum. spivaliter 
