442 Transactions. 



Liotella gen. nov. [P. 151.] 



I introduce this genus-name to cover a series of minute shells which 

 have been classed by Australasian workers in Liotia, but which differ in 

 their texture, do not possess a thickened peristome, and are more or less 

 loosely coiled. I name as type Liotia polypleura Hedley, a species I am 

 very familiar with, and that shell has a multispiral horny operculum with 

 a central nucleus. The second species on p. 151 (Liotia rotula Suter) would 

 be here classed, and I would suggest the addition of Liotia annulata Ten.- 

 Woods (Proc. Roy. Soc. Tasm.. 1877, p. 121, 1878); Liotia anxia Hedlev 

 (Proc. Linn. Soc. N.S.W., vol. xxxiv. p. 437, pi. 39, figs. 43-45, 1909) : Liotia 

 petalifera Hedley (Rec. Austr. Mus., vol. vii, p. 116, pi. 22, figs. 6-8, 1908) ; 

 Liotia disjuncta Hedley (Mem. Austr. Mils., iv, p. 336, fig. 66 in text, 1903) : 

 and Homalogy'ra pulcherrima Brazier (Proc. Linn. Soc. N.S.W., vol. ix, p. 175, 

 pi. 14, fig. 13, a, b, 1894). These are all obviously neither Liotia nor Liotina, 

 and, though I suggest all are not congeneric, the present location is good as 

 a temporary one, though not permanent. 



Zalioais gen. nov. 



Suter described a minute shell as Cyclostrema lissum in 1908, and he 

 now disposes of it in Delphinoidea Brown. That genus is based upon a 

 British shell which I do not consider congeneric with Suter's C. lissum, 

 which was one of my first discoveries when investigating the minutiae 

 found living in seaweeds in tide-pools at dead low water on the New Zea- 

 land coast. I sent Mr. Suter specimens for examination from Blind Bay, 

 Nelson, in addition to the localities lie mentions, and I also obtained it at 

 Sandfly Bay, Otago Peninsula. It is probably well distributed, but we have 

 knowledge of very little of the New Zealand minute marine molluscs as yet. 



I propose the above generic name, naming C. lissum Suter as type, and 

 anticipate many additions. I have another Neozelanic species, yet unde- 

 seribed, before me, but at present I do not know any Australian species I 

 would refer here. 



Lissotesta gen. nov. 



I mentioned to Mr. Suter in 1907, when I passed through Auckland on 

 my way to the Kermadec Islands, that I had written to Mr. Hedley ask- 

 ing his opinion with regard to Cirsonella ? neozelanica Murdoch. I had 

 compared the type of Cirsonella, and from shell characters it was not 

 congeneric, and the anatomical details given by Murdoch confirmed this 

 conclusion, whilst the operculum made the rejection of the species from 

 Cirsonella certain. Mr. Hedley has replied suggesting Assiminea, and 

 agreeing with my opinion. On p. 155 Cirsonella neozelanica is included, 

 but on p. 1082 there is a note quoting Thiele's investigation and its tenta- 

 tive reference to Acmella in the subfamily Omphalotropidinae of the family 

 Pomatiasidae, which is certainly a much better location. 



The first species, Cirsonella densilirata Suter, 1908, is certainly correctly 

 placed under the genus Cirsonella in the present state of our knowledge, 

 but the third species, Cirsonella granum Murdoch and Suter, 1906, I would 

 remove to my genus Lissotesta, which I here propose for the shells about 

 Cyclostrema micra Ten. -Woods. 1877, which I name as type. Yet Suter 

 has placed the former in the family Cyclostrematidae, and the latter in the 

 family Vitrinellidae. 



These " featureless " " Cyclostrematids " are difficult to place from 

 figures and descriptions alone, but the two here mentioned are conchologic- 



