CYCLOSTOMUS §. 10. 
237 
76. C. tectilabris Adams. 389 
T. vix subperforata, ovato-conica, tenuiuscula, longitudi- 
naliter subacute et confertim lamelloso-costata , fulvida, saepe 
violaceo-nebulosa , seriebus multis punctorum ruforum ornata; 
spira ovata, bre viter truncata; sutura albo - crenata ; anfr. su- 
perst. 4 convexi, ultimus rotundatus, antice subsolutus; aper- 
tura subverticalis , ovali - rotundata ; perist. duplex : internum 
continuum, expansiusculum , externum breviter patens, supra 
perforationem subdilatatum. — Operculum testaceum, planum, 
album, 5-spirum, apertura latius, peristoma includens. — Long. 
13, diam. 8 mill. Ap. 5V 2 mill, longa. (Coll. Nr. 163.) 
Cyclostoma tectilabre Adams Contrib. to Conch. N. 1. p. 10. 
— — Chemn. ed. II. Cycl. N. 354. t. 44. f. 25 — 27. 
Cyclostomus tectilabris Pfr. Consp. N. 335. 
Habitat in insula Jamaica. 
77. C. Ilronsii Adams. .390 
T. rimato - subperforata , ovato-turrita , truncata, solidius- 
cula, confertissime costulato - striata , sericina, pallide fusca, 
punctis rufis seriatis aliquando obsolete notata; sutura regula- 
riter crenata; anfr. superst. 3 — 3V 2 convexi, rapide accres- 
centes, ultimus basi concentrice multisulcatus ; apertura verti- 
cals, subcircularis ; perist. duplex : internum continuum, exter- 
num breviter expansum, margine dextro prope anfr. penulti- 
mum in appendicem brevem, linguaeformem dilatato. — Operc. 
fere C. e Leg antis , margine sulcatum. — Long. 16, diam. 10 
mill. Ap. intus 6 r / 2 mill, longa, 5 2 / 3 lata. (Coll. Nr. 164.) 
Cyclostoma Bronnii Adams in Proc. Bost. Soc. 1845. p. 11. * *) 
— — Pfr. in Zeitschr. f. Mai. 1846. p. 46. 
— — Chemn. ed. II. N. 43. p. 50. t. 6. f, 24—26. 
— papillare Feruss. Mus. 
Cyclostomus Bronni Gray Catal. Cycloph. p. 47. N. 18. 
— — Pfr. Consp. N. 347. 
types are geographically remote ; this species inhabiting the east end of the 
island from Yallah’s Hill eastward , while the other occurs in the middle of 
the south side (Manchester) and westward. Neither species has been found 
in the intermediate regions. (Adams 1. c.) 
*) T. fusca, interdum subalbida, decollata; anfr. 2 x / 2 perditis ; anfr. 
reliquis 4, supra exile crenulatis, striis longitudinalibus exilissimis parallelis 
creberrimis — eleganter insculptis ; labro crassiusculo , supra in triangulum 
parvum concavum producto ; operculo albo, subduplici. Div. 58°; alt. 0,67 ; 
lat. max. 0,5; lat. min. 0,35 poll. (Adams 1. c.) 
