Unexpectedly rich and diverse biological communities have been found to inhabit the anchialine pools and submerged passageways of extensive limestone caves on Bermuda.  Although these inland marine caves have no surface connection with the sea, they nevertheless contain salt or brackish waters, the level of which fluctuates with the tides.  In the present study, three species of the family Caecidae are recorded along with their growth stages.  Two of these species are new to science and known only from Bermudian caves.  Unfortunately, no living specimens were found and the knowledge of the Bermudian marine molluscan fauna is still insufficient.  So, it is unknown if the two new species really are troglodytic.

Thomas M. Iliffe, Department of Marine Biology, Texas A&M University at Galveston, P.O. Box 1675, Galveston, Texas 77553, USA.
E-mail: iliffet@tamug.edu

Keywords: Bermuda; anchialine cave; Caecidae; marine cave; new species; Caecum; Gastropoda.