NOTES ON THE MICEO-FAUNA OF AILSA CRAIG, FIRTH OF CLYDE. 157 



accessible parts of the hill could be made at suitable seasons of 

 the year, the list I now give might be considerably extended. 



I may say, before concluding these "Notes," that I was not aware 

 of Mr. Lawson's interesting History till just after our last visit to 

 Ailsa Craig, and was under the belief that its natural history was 

 better known than a perusal of Mr. Lawson's work appears to 

 indicate, otherwise a more careful search of that part of the Craig 

 visited by us would have been made, and greater attention given 

 to the numerous creatures we saw during the time we were ashore 



In the following list, which includes all the invertebrates 

 observed by us, I am responsible for the names of the MoUusca 

 and Crustacea; my friend Mr. Percy H. Grimshaw, F.E.S., of the 

 Museum of Science and Art, Edinburgh, very kindly favoured me 

 with the names of the Coleoptera and of the single species of 

 Hymenoptera that was obtained ; several other organisms that 

 were met with have not yet been fully identified, and are referred 

 to only by their family or generic names. 



List of Invertebrata observed on Ailsa Craig. Firth of Clyde, 

 as explained in the preceding "Notes": — 



MOLLUSC A. 



Helix nemoralis, Linn., with dark bands. 



Helix nemoralis, Linn., yellow, and without bands. 



Hyalinia alliaria (^Miller) = Zonites alliarius of Jefi'rey's 



" Conchology." 

 Pupa cylindracea, Da Costa, = Pupa umhilicata, of Jeffrey's 



" Conchology." 

 Clausilia rugosa, Draparnaud. 



CRUSTACEA. 



isOPODA. COPEPODA. 



Oniscus asellus, Linn. Cyclops hisetosus, Hehberg. 



Porcellio scaler, Latreille. Moraria Anderson-Smitlii, T. and 



A. Scott. 



Cladocera. 



Alona rustica, T. Scott. 

 Chydorus sphoiricus, Muller. 



