284 riiOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



NOTES OX SOME NEW ZEALAND FLAMMULINA, WITH THE 

 DESCllIPTION OF F. PONSONBYI, n.si-. 



By Henry Sutee. 



Bead nth June, 1897. 

 1. FlAMMITLINA (PnENACOHELIx) PILULA (RcGVe). 



Helix 2nlula, Reeve: Conch. Icon., sp. 809 (18.52). 



Ilelix iota, Pf eiffer : Mon. Hel. Viv., vol. iii (1853), p. 69; Proc. 



Zool. Soc, 1862 (1854), p. 57. 

 Ilelix {Charopa) iota (Pfr.) : Hector, Cat. Land Moll. jNTew Zealand, 



1873, p. viii. 

 Fatula iota (Pfr.) : Hutton, Man. New Zealand Moll., 1880, p. 6. 

 Charopa {Thalussia) iota (Pfr.) : Tryon, JUan. Conch., ser. ii, vol. ii, 



p. 212, pi. Ixii, fig. 43 (copy of Reeve). 

 FlienacoMix granum (Pfr.) : Hedley & Suter \_nm Pfr.], Proc. Linn. 



Soc. New South Wales, ser. ir, vol. vii, p. 642. 

 To_Mr. E. A. Smith I am indebted for the following additions to 

 the diagnosis of the species, as observed on the type-specimen, drawings 

 of which, kindly sent by Mr. J. H. Ponsonby, are here reproduced : — 

 " Protoconch, one and a half Avhorls, minutely spirally striated, no 

 riblets. Nine riblets or eight furrows to a millimetre. The entire 



I'Uuiniudina pUula (Reeve). F/ammuUna Poiiso)iIi>ji, n.sp. 



surface between the riblets, as seen under an inch objective, is very 

 minutely decussated. In some lights the longitudinal strife are more 

 noticeable, and vice versa. The ribs are slender, subequidistant, and 

 of equal size. Diam. maj. 3'5, min. 3"25mm. ; alt. 2-5 mm." 



On examining the specimens in my collection, I fouud them to agree 

 in the characters pointed out by Mr. E. A. Smith. The number of 

 riblets, of course, is slightly variable. In most specimens I found them 

 to be 9, in some 8, and in one 7 only, per millimetre. The umbilicus is 

 sometimes a little narrower than in the type, but always perfectly 

 open. In adult specimens the diameter is 4, whilst the altitude 

 varies from 2-5 to 3 mm. 



Hah. — North Island : — "WTiangarei ; Mt. AVellington Lava Fields, 

 near Auckland ; Hunua Range ; Wanganui ; "VVaimarama ; Forty Mile 

 Bush. Stewart Island : — Halfmoon Bay. 



