PULMONATA 259 



the exception of the first named on the list, they have been un- 

 wittingly introduced, with plants, garden stuff, etc. In spite of 

 introduced enemies (birds, hedgehogs, etc.) they are extraordinarily 

 abundant now in many parts, and are a great pest in gardens. 



The following list is compiled by the eminent New Zealand 

 malacologist, the late Mr Henry Suter, and is practically the same as 

 is given in his Manual of New Zealand Mollusca, published in Wel- 

 lington in 1913 (p. 1071). 



The classification of Families is that adopted by the Rev. A. H. 

 Cooke in the Cambridge Natural History. 



Family LiMN.asiD.flE 

 Lymncea stagnalis, Linn. 



Onehunga Springs, Christchurch, introduced as food for trout 

 in the River Avon (Suter). These were originally introduced from 

 England in 1864 by Mr A. M. Johnson, late of Opawa, who 

 brought them out as food for the fish he was endeavouring to intro- 

 duce. 



Suter thinks that the Tasmanian water-snails introduced by John- 

 son in 1868 were most likely the same species. It is very abundant 

 about Hobart and was described by the Rev. J. E. Tenison Woods 

 as Limncea tasmanica in Proc. Roy. Soc. of Tasmania. 



Hutton stated in 1881 that this species was abundant in the River 

 Avon, below the Christchurch Botanical Gardens. It was also recorded 

 before 1890 from springs at Onehunga, near Auckland, and is now 

 known from streams in Taranaki. - 



Lymncea auricularia, Linn. 



An empty shell was found near Wanganui (Suter). According to 

 Kew, eggs of this species have passed unharmed through the digestive 

 system of swans. 



Family TESTACELLIDJE 

 Testacella maugei, Ferussac 



Originally described as T. vagans by Hutton who thought it was 

 an indigenous species. 



Found in gardens in the vicinity of Auckland (Suter). 



The first specimens obtained were got by Mr W. W. Smith at 

 Ashburton. 



This "snail-slug" is a native of South-west Europe, and it was 

 first noticed between 1812 and 1816, in Britain. 



