88 THE NAUTILUS. 
ous tail gland, which is not the case. Moreover, the jaw in Endo- 
donta and Charopa is only striated, whilst stegognath in Gerontia, 
and the radula in the latter is more or less distinctly pseudozon- 
itoid. Iam of opinion that the separation of Gerontia from Endo- 
donta is fully justified ; the patuloid shells being included in Endo- 
donta, whilst the more zonitoid forms are embraced in Gerontia. 
Mr. Charles Hedley and the writer substituted von Martens’ 
Flammulina for Amphidoxa of N. Z. authors, and as the genus of 
von Martens dates from 1873, it must be used as the generic name 
instead of Gerontia (1883). ; 
The classification of the New Zealand Helicidz I propose, follow- 
ing chiefly Mr. H. A. Pilsbry, is the following: 
Group Hapiocona Pilsbry. 
1. Genus Flammulina (von Martens) Suter. 
Sections: (1) Flammulina v. Mart. s. str.; (2) Gerontia Hutt.; 
(3) Phacussa Hutt.; (4) Therasia Hutt.; (5) Pyrrha Hutt.; (6) 
Phenacohelix Sut.; (7) Allodiscus Pils.; (8) Suteria Pils.; (9) 
Thalassohelix Pils. 
2. Genus Endodonta (Albers) Pilsbry. 
Sections: (1) Endodonta Albers,‘s. str.; subsect. Ptychodon 
Ancey ; (2) Charopa Albers; subsections, a. Tesseraria Bottger ; b- 
Aeschrodomus Pils. 
Group PotyeLtacoeNatHa Pilsbry. 
Genus Laoma (Gray) Pilsbry. 
Sections: (1) Laoma Gray, s. str.; (2) Phrixgnathus Hutton. 
Giving now the classification of the Tasmanian land shells ex- 
amined, I wish to point out that it is based on the dentition as well 
as on the shell characters; their numberjis thirty-two. 
Genus Flammulina (von Mart.) Suter. 
Sect. Flammulina von Martens, s. str. 
(1) F. jungermanniae Petterd. (38) F. luckmani Brazier. 
(2) F. sitiens Cox. 
