1895 - 96 .] 
Mr Arthur T. Masterman on Phoronis. 
71 
Balanoglossus. 
Phoronis. 
Cephalodiscus. 
Bhabdopleura. 
Sexes. 
Unisexual. 
Hermaphrodite. 
? 
? 
Mesoblastic 
Skeleton 
of Chond- 
roid Tissue. 
Below notochord 
and in collar. 
Well - developed 
in epistome, in 
collar and in 
tentacles. 
Well - developed 
in buccal 
shield, and in 
tentacles. 
Well - developed 
m tentacles. 
Endoderm. 
Notochord. 
... ? 
Notochord. 
Notochord. 
Gill-slits. 
Many. 
None. 
One pair. 
None. 
Gut. 
Pharynx. 
Oesophagus. 
Stomach. 
Intestine. 
Pharynx. 
Oesophagus. 
Stomach. 
Intestine. 
Pharynx. 
Oesophagus. 
Stomach. 
Intestine. 
Parynx. h 
Oesophagus. (_ 9 
Stomach. 1 ' 
Intestine. J 
Anus. 
Slightly dorsal. 
Dorsal. 
Dorsal. 
Dorsal. 
Habit. 
Solitary. 
Gregarious. 
Co-habiting. 
Colonial. 
Habitat. 
Burrowing. 
Sedentary and 
burrowing. 
Partially 
sedentary. 
Sedentary. 
