78 AUSTRALIAN LAND SHELLS. 



Habitat. Darling Point, and other places about Port Jackson. Wol- 

 longong, &c. Mac GiUivray. 



This inconspicuous little horny-brown shell I placed provisionally with 

 Bulimus, when describing it three years ago. The curious twisted 

 columella, and the parietal plate, were duly noticed in the original 

 description. They are not compatible with Bulimus. On again 

 taking up the subject, I find that the species under consideration 

 comes within the section Frickella of the genus Achatinella. As 

 all the hitherto recorded species of that genus 210 in 1859, accord- 

 ing to Pfeiffer's Mon. Hel. Viv., Vol. TV., p. 570 are peculiar to the 

 Sandwich Islands, it is a matter of extreme interest to find even an 

 aberrant form, previously known by one species only, represented in 

 Australia. 



189. Achatinella Wakefieldise. Cox. M.C. 



Shell imperforate, ovately-conical, very thin, translucent, rather shining, 

 smooth, microscopically striated, yellowish-hcrny ; spire conical, 

 obtuse at the apex; whorls 4, slightly .convex, last large, tumid, 

 equalling ^ of the length ; aperture irregularly ovate, with a very 

 thin central, vertical, parietal plate ; columella thinly expanded and 

 revolute inwards, grooved above ; peristome simple, acute. 



Length 0'10 ; breadth 0-07 ; aperture - 05 long, of an inch. 



Habitat.. Grafton, Clarence River, in decaying wood. Wakefield. 

 Ballina, Richmond River, on flowers and leaves of Hibiscus. Ramsay. 



A very distinct species, differing from the preceding in form, number 

 of whorls, relative length of last whorl, &c. 



Genus 



PUPA, Lamarck. 



Shell rimate or perforate, cylindrical, ovate or bulimi- 

 formed; last whorl in proportion small; aperture somewhat 

 irregular, semi-oval or roundish, toothless or dentate ; 

 peristome somewhat simple or expanded, margins equal, 

 somewhat parallel, distant, mostly united by a callous 

 lamina. 



Animal with a short foot, pointed behind ; lower tentacles 

 short. Mandibles finely striated, not rostrate, slightly 

 arcuate ; margins concave, entire, in the middle generally 

 slightly prominent. Lingual teeth of the usual form, and 

 moderately numerous. 



XXXVII.- SECTION VERTIGO. Muller. 



Shell minute, sometimes sinistral, ovate, apex acuminate, 

 obtuse ; whorls 5 to 6, last rounded ; aperture large, semi- 



