174 SCOTT: MOLLUSCA OF LINDORES' LOCH. 



times as if to add still further to the enchantment of the scene 

 the air is filled with the hum of the busy insect life that finds 

 food and shelter amid the luxuriant vegetation in the vicinity of 

 the loch. 



The fauna and flora of the loch and its neighbourhood is 

 well worth the spending of a long summer's day to examine. Un- 

 fortunately at this time my visit was limited to a few hours, and 

 to make it more unsatisfactory the weather was unpropitious, 

 but notwithstanding this combination of unfavourable conditions 

 a few interesting objects were secured, and among them were a 

 number of molluscs. 



The following is a list of all the species observed in and 

 about the loch during my visit : — 

 Sphaerium corneum (L.). This species is not very plentiful, 



nor is it so large as in some other Scotch localities. 



Pisidium nitidum Jenyns. Of frequent occurrence. 



P. roseum Scholtz? This form though agreeing very well 

 with P, roseum as described in Dr. Jeffrey's ' British Con- 

 chology,' and which is generally known in England by this 

 name, is not considered by some Continental Conchologists 

 to be the P. roseiun of Scholtz. This, though somewhat 

 scarce, is not exactly a rare form in Lindores' Loch. 



Valvata piscina! is (MiilL). A common species. 



Planorbis nitidus (MlilL). Frequent. 



P. nautileus (L.). This seems rather scarce, but that is owing 

 perhaps, not to its actual scarcity so much, as to its being 

 so small and easily overlooked. 



P. albus (MiilL). Frequent. 



P. contortus (L.). Rather common. 



Physa fontinalis (L.). Common. 



Limnaea peregra var. lacustris (Leach). Not unfrequent; 

 it is noteworthy that all the specimens observed belonged 

 to this variety. 



j.C, v., April, ISSr, 



