534 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
some species are supposedly of separate sexes, others are certainly 
hermaphroditic, and at least one is viviparous. 
Terrestrial nemerteans are found in a great variety of situations, 
some species living near or on the seashore, or in comparatively dry 
inland soil, while others occur beneath stones and rotting wood or 
beneath the dead bark of trees in damp places in warm countries, 
or are imported into greenhouses in other lands. As a rule the 
worms do not burrow, but lie beneath objects for protection. They 
are widely distributed in tropical and subtropical regions, occurring 
principally in islands: Australia, New Zealand, Tasmania, Pewlew 
(Palao) Islands, New Guinea. Rodriguez Island, Bermuda Islands. 
Up to the present time eight species of terrestrial nemerteans 
have been described, all of which apparently belong to the genus 
Geonemertes. They are distributed as follows : — 
G. palaensis Semper. Pewlew Islands. 
G. agricola (Willemoes-Suhm) Burger. Bermuda. 
G. rodericana (Gulliver) Burger. Rodriguez Island. 
G. chalicophora Graff. Introduced into greenhouse at Frankfurt, 
Germany ; probably introduced from Australia. 
G. australiensis Dendy. Australia. 
G. novae-zealandiae Dendy. New Zealand. 
G. graffi Burger. New Guinea. 
G. micholitzi Burger. Samarai, Queensland. 
The more important specific and anatomical peculiarities of these 
eight species may be represented by the following comparative table 
of anatomical characters : — 
