“44 
tened, above transversely striated, below smooth ; aperture subcircular, 
angulated above ; umbilicus very wide, the whorls visible within it. 
Hab. Dumaguete, island of Negros; H.C. (Mus. Cuming.) 
CycLostrEeMA micans, Adams. C. testdé turbinatd, minutd, albd, 
nitidd, anfractibus conveais, longitudinaliter oblique costellatis, 
transversim carinulatis, carinulis nodulosis; umbilico mediocri; 
aperturd circulari ; peristomate continuo, incrassato. 
Hab. Australia. 
Shell turbinated, small, white, shining, whorls convex, longitudinally 
obliquely ribbed, transversely carinated, keels nodulous ; umbilicus 
moderate ; aperture circular; peristome continuous, thickened. 
Hab. Port Lincoln; Metcalf. (Mus. Cuming & Metcalf.) 
CyYCLOSTREMA ELEGANS, Adams. C. testd orbiculari, discoided, 
tenui, semipellucidd ; spird depressd, anfractibus rotundatis, 
transversim omnino striatis ; suturis distinctis ; aperturd sub- 
circulari, supra angulatd ; umbilico peramplo. 
Hab. in insulis Philippinis. 
Shell orbicular, discoid, thin, semipellucid ; spire depressed, whorls 
rounded, entirely transversely striated ; suture distinct ; aperture sub- 
circular, angulated above ; umbilicus very wide and open. 
Hab. Sibonga, island of Zebu, 10 fathoms, sandy mud; H. C. 
(Mus. Cuming.) 
CyctostreMA sutcaTa, Adams. C. testa orbiculari, diseoided ; 
spird planiusculd, anfractibus convewis, costellis transversis 
confertis regularibus, interstitiis profundé sulcosis ; suturis 
profundis canaliculatis ; umbilico patulo ; peromphalo levi. 
Hab. in insulis Philippinis. 
Shell orbicular, discoid ; spire rather flattened, whorls convex, 
with regular, transverse, small ribs, numerous and close together, in- 
terstices deeply grooved ; suture canaliculated ; umbilicus open; um- 
bilical area smooth. 
Hab. Tambay, island of Negros, coarse sand, 6 fathoms; H. C. 
(Mus. Cuming.) 
CycLosTREMA ANGULATA, Adams. C. testd orbiculari, discoided ; 
spird depressd, anfractibus transversim costellatis, costellis 
regularibus, equidistantibus, interstitiis tenuissime striatis ; 
anfractu ultimo biangulato, supra costellato, in medida plano, 
infra costellato; aperturd subangulatd ; peritremate inter- 
rupto ; umbilico permagno. 
Hab. in insulis Philippinis. 
Shell orbicular, discoid ; spire depressed, whorls transversely cos- 
tellated ; ribs small, equal, equidistant, interstices very finely striated ; 
last whorl biangulated, costellated above, smooth in the middle, and 
ribbed beneath ; aperture somewhat angulated ; peritreme not con- 
tinuous ; umbilicus very large. 
Hab. Sibonga, island of Zebu, 10 fathoms, sandy mud; H. C. 
(Mus. Cuming.) 
