EEPOET on the LAND MOLLUSCA of PUFFIN 

 ISLAND. 



By Alfred LeicestePw 



[Read ISth December, 1889.] 



In presenting this report on the land Molkisca of Puffin 

 Island, I may remark that on accomit of the small size of 

 the island the numbers to record cannot possibly be large, 

 or the species very varied, still what species have been 

 found are well represented. The collections were made in 

 the autumn of 1887 and summer of 1889. Further time 

 devoted to the search in the future may result in the 

 discovery of a few additional forms, but it is not to be 

 expected that many such will be found. So far tw^o 

 families only are represented, viz. Limacidse by one species, 

 and Helicidae by fifteen species. 



I have not yet made a very careful search on the main- 

 land of Anglesey, around Penmon Point, or on the Great 

 Orme's Head, but most of the species found on the island 

 have also representatives on the mainland ; whilst one 

 noticeable form found commonly on the Great Orme's 

 Head does not occur on the island, viz. Cijclostoma elegans^ 

 the- only operculated land shell. It seems strange that 

 not even a dead specimen should have been found on 

 Puffin Island considering its proximity to the land, and 

 this being so, it would appear that no communication can 

 have existed for a long period, or else such a striking form 

 would surely have left some trace. 



The nomenclature I have used is that of Forbes and 

 Hanley's " British Mollusca." 



