22 Proceedings of the Royal Physical Society. 



cesses are broader, as if two adjacent filaments had joined 

 and had enclosed a cavity ; in some of these there were two 

 prolongations from the middle lamella (Fig. II., T.;p'). Some 

 of the large clear cells of the triangular processes look as 

 if they were amoeboid. Various inclusions were seen in the 

 (endoderm) cells of the triangular filaments, some doubtless 

 food-particles, others perhaps symbiotic Algae. 



(/) In some cases a narrow canal was seen entering the 

 base of the gonophore. This crosses the body-wall, and 

 communicates with the central cavity of the gonostyle 

 between two adjacent triangular filaments (Fig. II., C). Thus 

 the cavity of the gonophore communicates freely with the 

 cavity of the gonostyle. 



If the interpretation given be correct, that these specimens 

 are the separated gonostyles of a Siphonophore colony, or of two 

 closely-related Siphonophore colonies, the question of further 

 classification arises. But this is hardly answerable. I have 

 not been able to find any description of a gonostyle which 

 agrees with what I have observed. All that one can venture 

 to say is that the complete animal is a Siphonophore of 

 large size, with mouthless gonostyles bearing fixed gono- 

 phores. 



IV. Note on Limax tenellus (Miill.) , with Uxhihition of Living 

 Examples from the ''Forth'' Area. By William Evans, 

 F.RS.E. 



(Read 24th October 1904.) 



The three examples of Limax tenellus now exhibited were, 

 along with several others, found by me in The Forest, 

 Clackmannanshire, on 3rd September 1904, and have since 

 been kept in a box filled with damp moss and pieces of fir 

 bark. For food, they have been given various kinds of 

 woodland fungi {Russula and other Agarics, and Boletus). 



This pretty little slug has a rather interesting history. 

 Though apparently described by Muller so long ago as 1774, 

 and certainly by Nilsson in 1822, it remained little known 

 even on the Continent till within comparatively recent years. 



