886 NATURALISED FORMS OF LAND AND FRESH-WATKR MOLLUSCA, 



described three species of S. Australian and Tasmanian slugs. 

 It would be interesting to see examples of all these forms, as 

 one cannot but feel somewhat suspicious as to their claim 

 to be indigenous. They may prove to be merely introduced. 

 Another species, Milax antij)odioi7i, has been described from 

 New Zealand by Pfeiffer ; whilst Gould has described Limax 

 fuliginosus from the same colony. Tate suggests that these two 

 may prove to be specifically identical ; they might also be 

 European. Hutton also describes from New Zealand Milax 

 emarginatus, (Trans. N.Z. Inst. XI., p. 331). 



Another slug, unknown to us here, has been described by 

 Selenka, Limax pectinatus (in Malak. Blatt. XII. p. 105, pi. 2, 

 figs. 1-9) ; it is probably A. gagates. It is a pity when Australian 

 forms happen to be described abroad, that typical examples are not 

 forwarded to the country from whence they came. 



Quoy and Gaimard described (Zoology of Freycinet's Voyage in 

 the Uranie, 1824, pp. 426, 427) two .slugs from Port Jackson 

 under the names of Limax megalodontes and L. maurus. From 

 the very meagre descriptions, and absence of figures, it is impossi- 

 ble to say exactly what these are ; possibly they may have been 

 introduced forms the former perhaps Limax Jlavus, and the 

 latter Amalia gagates. 



It is interesting to note that the tide, so far as evidence from a 

 consideration of our molluscan connections with Europe goes, is 

 one of emigration from North to South, of hardy temperate 

 forms to warmer regions, following out an old established rule. 



Legrand says (P.R.S. Tas. 1870), tha,t Helix Morti, Cox, wliich 

 is found near Hobart, has probably been introduced from N.S.W., 

 in mould with plants. Cox also records ZT. cyclostomata, Le 

 Guill., as received from Melbourne ; it is a native of Queensland. 



It is a curious fact, that some of the British species included in 

 the above list are not by any means the commonest forms in that 

 country ; whilst some of the commoner forms there have not as 

 yet reached us ; amongst them it may be observed, that Helix 

 hispida and H. rufescens, as yet unknown here, have made them- 

 selves at home in the United States. 



