698 MR. J. BRAZIER ON SEVEN NEW SPECIES OF HELIX. [Nov. 21, 



simple, thin, acute; margins approximating, right very little de- 

 pressed, basal margin recurved and reflected. 



Diam. maj. 4\, min. 4, alt. 3 lines. 



Hab. Near Hobart Town, Tasmania. 



This species I have named after my friend and fellow voyager 

 Mr. William Flood, R.N., late of Her Majesty's Steam-ship ' Cu- 

 racoa.' 



6. Helix (Videna) milligani. 



Shell umbilicated, discoidal, thin, closely and accurately ribbed; in- 

 terstices striated with fine granular-like lines, not shining, pale horny 

 green ; spire depressed, suture very little impressed ; whorls 4|, flatly 

 convex, last large, inflated, convex, base striated the same as the upper 

 surface ; umbilicus deep and wide, sugarloaf-shaped, with the striae 

 running into it ; aperture oblique, lunately ovate ; peristome simple, 

 thin, acute, straight ; margins rather distant, right expanded, colu- 

 mellar margin recurved a little over the edge of the umbilicus. 



Diam. maj. 5, min. 4£, alt. 2\ lines. 



Hab. Mount Wellington, Tasmania (Petterd). 



Named in honour of Dr. Milligau, whose indefatigable exertions 

 in the cause of science have made us acquainted with many new and 

 rare Tasmanian shells. 



7. Helix (Videna) pascoei. 



Shell umbilicated, discoidal, obliquely closely and very finely ribbed, 

 spirally striated, the interstices as seen under the lens with fine silky 

 striae, not shining, dark reddish horny ; spire quite flat, suture fur- 

 rowed ; whorls 4^, nearly flat, last large, roundly convex ; base light 

 brown, convex, sculptured the same as the upper surface ; umbilicus 

 deep and narrow, with the striae running into it ; aperture diagonal, 

 ovately lunate ; peristome simple, thin, acute, regular ; margins 

 rather approximating, right scarcely expanded, basal margin not re- 

 flected. 



Diam. maj. 4, min. 3, alt. 1-| lines. 



Hab. Near Hobart Town, Tasmania (Petterd). 



This species is quite flat, like a Planorbis, with the suture fur- 

 rowed or deeply indented. 



8. Paludestrina legrandiana. 



Shell elongately conical, thin, semipellucid, greenish horn- colour 

 under a dark epidermis ; whorls 6^, somewhat flattened, the last 

 three keeled below the suture, and furnished with small, solid, 

 stunted, hair-like spines (as seen under the lens) of a bright trans- 

 parent horn-colour, flattened on the top ; aperture ovate, margins 

 continuous, thickened, outer lip reflected. 



Length 2\ lines, breadth 1^- line. 



Hab. Salmon-ponds, New Norfolk, Tasmania (Legrand). 



This species is allied to Paludestrina salleana, Fischer, from 

 Auckland, New Zealand. 



