ANNELIDA. 
107 
Leptoplana jlexilis , Dalyell; Johnst. Cat. p. 6. 
Abundant under stones between tide-marks. 
Leptoplana atomata , Muller; Johnst. Cat. p. 6. 
Common in the same localities. 
Leptoplana ellipsis , Dalyell; Johnst. Cat. p. 7. 
Not uncommon between tide-marks. 
Order II. Rhabdociela. 
Fam. 1 . Proboscidea, J. Y. Carus. 
Genus Prostomum, (Erst. 
Prostomum linear e ) (Erst.; Johnst. Cat. p. 62. 
Occasionally found on stones brought from the rocks near 
low water. 
A curious form, having a pointed snout with a globular 
process posteriorly, and a dull pinkish alimentary canal, was 
procured from the fishing-boats; but unfortunately I possess 
only the drawing, upon which, however, every reliance can be 
placed (Plate Y. fig. 9). 
Fam. 2. Schizostomea, O. Selim. 
Genus Convoluta, (Erst. 
Convoluta paradoxa^ Abildgaard; Johnst. Cat. p. 16. 
Very common amongst seaweeds and Corallina in tide- 
pools. 
Convoluta Diesingii , Schmidt (?), Sitzungsb. der k. Akad. 1852. 
Occasionally under stones in rock-pools. 
