66 CONTRIBUTIONS FOR SYSTEMATIC CATALOGUE AQUATIC SHELLS. 



var. a. Papyracea. Tate. Trans. JRoyal Soc. S.A„ 1880. 

 Plate II. Fig. 12. 



Habitat — Penola, Adelaide, and Kangaroo Island, South 

 Australia (Tate) ; Merrigum, Victoria (Bailey, apud. Tate) ; 

 Ouse Eiver (Dyer), Mowbery, Waverley, St. Leonard's, and 

 many other places near Launceston, Fingal, St. Mary's, Huon 

 River, etc. 



I am of opinion that this is but a variety of the above ; they 

 are found living together in the same pools about Launceston. 

 I cannot see any difference in the animals. At Penola, S.A., 

 Professor Tate found numerous dead shells in the bed of a 

 dried up marsh ; here they may be often obtained under 

 similar circumstances. 



Limncea subaquatilis. Tate. 



Limncea stibaquatilis. Tate. Trans. Roy. Soc. S. Australia, 

 p. 103, t. 4 fig. 6. 

 Habitat — " Among paludinal herbage growing on the 

 marshy margins of the River Torrens at Adelaide, S. Australia" 

 (Tate). 



var. a. neglecta. 

 Plate IL Fig. Vi, 

 Shell, thin, pale greenish horn colour, broadly ovate, 

 ventricose, with irregular longitudinal lines of growth ; spire 

 short, suture very much impressed; a pert ii re o\a.ie, more than 

 half the length of the shell ; columellar fold indistinct, joined 

 to the labrum by a very thin shining callosity. 

 Length, 7. Breadth, 5 nnill. 



Animal (Plate TV. Figs. 1 and 2), short and broad, not 

 showing beyond the shell behind, yellow brown colour, darker 

 above with specks of darker shade and irregular flakes of a 

 lighter colour; foot broad and pointed behind; tentacles 

 short and blunt ; eyes very distinct, distant from tlie margin. 



Huhilaf — Found living on damp moss and mud in the Ti- 

 tree swamp, near Launceston. 



This interesting shell I have made but a variety of Professor 

 Tate's species with considerable doubt, but the similarity of 

 the figures and somewhat jx-culiar habitat of both has 

 restrained from erecting it into a distinct species until the 

 animal of the type has l)een examined. The animal does not 

 glide as is usual with the species of the genus, but moves 

 with a peculiar jerky motion. 



Ll.MN(KA Gu.NNlI. 11. Sjt. 



Plate II. Fig. 10. 

 ,S7,' // thin, fragile, shining, yellowish horn colour, ovate, 

 marked with very fine longitudinal lines of growth ; ivhorls 



