BY HENRY SUTER. 499 



Dentition. — Hutton, Trans. N.Z. Inst. Vol. xvi. p. 1G3, pi. ix. 

 fig. D. 



Hah. — North Island : Auckland (Gillies), Himna Range, 

 Thames, Oliaupo, Hawke's Bay, Pirongia Mt., Forty Mile Bush. 

 South Island : Dunedin, Greymouth, Oxford, Hooker Valley. 



Note. — Specimens of this shell, which by Prof. Hutton and 

 myself were considered to be Ch. buccifiella, Reeve, were sent to 

 Mr. Edg. A. Smith, of the Brit. Mus., for comparison with 

 PfeifFer's types. Under date 21st Aug., '93, he very kindly informs 

 me that he cannot identify these shells with anything in the Brit. 

 Mus. collection, and there can be no doubt that they have never 

 been described before. 



This shell is very variable with regard to the intensity of the 

 colouring, and adult specimens are rare. 



Charopa tau, Pfeiffer, sp., 1862. 



Syn. — miotahilis, Suter, 1891, = sylvia, Suter (non Hutton). 



1 1 1 u s t r. — Trans. N.Z. Inst. Vol. xxiii. pi. xvi. figs. 2-26. ; 

 Man. Conch. (2), viii. pi. xix. figs. 25-27. 



De script.— Mai. Blat, viii. p. 148; PfeifFer, Mon. Hel. Viv. 

 Vol. V. p. 159; Hector, Cat. Land Moll. N.Z. p. 12; Hutton, 

 Man. N.Z. Moll. p. 8 ; Trans. N.Z. Inst. Vol. xxiii. p. 84 ; Man. 

 Conch. (2), Vol. viii. pp. 98, 101. 



Dentitioji. — Trans. N.Z. Inst. Vol. xxiii. p. 85, pi. xvi. figs. b. c. 



Hab. — South Island : Hooker Valley, Castle Rock, Southland, 

 Mt. Somers. 



Note. — As Ch. sylvia, Hutton, is not identical with Ch. tau, 

 Pfeiff'er, but with huccinella, Reeve, I came to the conclusion that 

 my Ch. mutahilis must be the same as Pfeiffer's Ch. tau. I com- 

 pared my specimens with the description given by Pfeifler, and 

 they agree in every respect. The only difference is in the height 

 of the shell. Pfeiffer gives it to one millimetre, whilst all my 

 specimens show 1 J, or but very little less. 



