126 Dr. J. C. Melvill and Mr. R. StanJen on 



8i2:)1ionaria tristensis, Leacli. 



Siphonaria lessoni, Blainville, d'Orbignv, Voy. Mer. p. 469, tab. Ivi. 



figs. 12, 13, 14. 

 Siphonaria trisfensis, Reeve, Conch. Icon. v. sp. 23. 

 Siphonaria iceviu.icula, lleeve, I. c. sp. 5, 



Hoy Cove, on rocks at half-tide. 



Tlie form or var. heviuscula, Reeve, occurs at Dip Creek, 

 Roy Cove, Shallow Bay, on rocks ; Rapid Point, at low tide ; 

 and is, no doubt, generally distributed throughout the area. 



Fam. Limnseidas. 



Limncea diaphana, King. 



Limnmi dinphana, King, Zool. .Tourn. v. p. 339 (1832) ; Reeve, Concli. 

 Icon, xviii. spec. 30; H. Strebel, I. c, Zool. Jahrb. Band xxv. p. 163, 

 Taf. viii. fig. 100 a-c (1907). 



Port North Lake. 



LimiKva patagoniea, Streb. 

 Limncea patagoniea, II. Strebel, I. c. p. 164, Taf. viii. fig. 103 a, b (1907). 



Freshwater Pond, Port North ; Lake near Teal River 

 Settlement; Herbert Station, Roy Cove. 



Very fine and perfect examples, of a bright transparent 

 liorn-colour, not corroded apically as is so often the case. 



Chilina fluviatilis, Gray. 



Chilina fluoiatilis, Gray, Reeve, Concli. Syst. pi. clxxxix. fig. 5, and 

 Coacli. icon. xix. pi. i. fig. 1. 



Poit North Lake. 



Chillna sxd>cylindrica, Sowb. 



Chilina gubcylindrica, G. B. Sowerby, in Reeve, Concli. Icon. xix. 

 pi. iii. fig. 16 (1874). 



Ilerljort Stream ; C-rookcd Inlet. 



The original specimens came from (Jhili. Our species seems 

 to harmonize witii it, but may possibly be a very nearly 

 allied new form. 



