THE ANATOMY OF PHORONIS AUSTRALIS. 143 
No details as to colour are given by Wright or Dyster. 
The species has been found on the Devonshire Coast and 
in the Firth of Forth. 
2. Ph. Kowalevskii, Caldwell (unpublished). 
Individuals small, rarely exceeding one inch in length. 
Tube chitinous (?), coated with sand; numerous individuals 
live together, their tubes entwined. 
Lophophore simple (see fig. 12). 
Tentacles about a quarter of an inch long, and 100 in number. 
? Colour, 
Locality, Mediterranean (described by Kowalevsky). 
3. Ph. australis, Haswell (12), 1882. 
Individuals some three to five inches in length; sometimes 
attaining as much as six inches. 
No definite tube appears to be formed, but several indi- 
viduals live together in the purple-coloured sac, some three or 
four inches wide, which is formed by Cereanthus, and com- 
posed of discharged nematocysts, &c. 
The lophophore is more complicated than in the previous 
species, the inbent dorsal portion being curved in an ascend- 
ing spiral, giving on each side three coils. 
The tentacles are half an inch or more in length. 
The individual is purple in colour, in the tentacular region ; 
the tip of each tentacle is darker. In the proximal part of 
the body the body wall is sufficiently transparent to allow the 
red colour of the vascular system to show through. 
The species has been found in Port Jackson, in twelve 
fathoms. 
4. Ph. Buskii, McIntosh (19), 1888. 
Individuals about two inches, or rather more, in length, 
Tube tough, hyaline: the animal lives embedded in sand. 
The lophophore closely resembles that of Ph. australis. 
The colour (in spirit specimens) is blackish in the tentacular 
region, and the tentacles are tipped with dark brown. 
VOL, XXX, PART 2,—NEW SER. K 
