Iredale. — Suter's "Manual of the New Zealand Mollusca." 441 



On p. 154 Delphinoidea is included, but the species so classed bears little 

 resemblance to the British shell, which is the type of the genus. 



On p. 157 Miss Bush's fam. Vitrinellidae is admitted, but the shells 

 placed under this name bear little or no resemblance to Vitrinella, and the 

 name should be dismissed at once from Neozelanic literature. 



Miss Bush's Lissospira is also introduced for the minute turbinate species, 

 corulum Hutton, 1885, and micra Tenison- Woods, 1877. The former of 

 these has little resemblance to the species of Lissospira, and I have already 

 proposed to seperate it genericallv. The latter bears only superficially the 

 aspect of species of Lissospira . Moreover, Miss Bush recognized as a sub- 

 genus of Lissospira the genus Ganesa Jeffreys. That name has long priority, 

 but the species are quite unlike the austral species. 



Thiele has shown that most of the Antarctic shells, which closely re- 

 semble boreal species — so much so that previous workers had considered 

 them congeneric — showed vast differences when the aninals were examined. 

 In my own case, I cannot separate shells of Heterorissoa and Jejfreysia, yet 

 the opercula notably differ, and Thiele has been able to recognize several 

 genera in the southern so-called '' Jejfreysia." 



Under these circumstances, I unhesitatingly reject Lissospira, and also 

 Cyclostremella Bush, admitted by Suter on p. 160. This latter genus was 

 proposed for such a shell as the Australian Cyclostrema charopa Tate, but 

 Thiele has differentiated an Antarctic genus under the name Microdiscula. 

 The austral species I would class under this name rather than under Miss 

 Bush's, especially as she writes, " Nuclear whorl relatively large, turned 

 downward, seen only in a basal view, leaving a small pit above." No 

 austral form I have examined shows this character. Suter's Cyclostremella 

 neozelanica seems to show no affinity with either Cyclostremella Bush or 

 Microdiscula Thiele, but differs in almost every particular, as will be here- 

 after shown. 



Circulus Jeffreys is, on p. 159, introduced into the Neozelanic fauna to 

 include a shell very closely allied to "Cyclostreme " tatei Angas. There is 

 quite a large group of- Indo-Pacific shells agreeing vaguely in character 

 with C. tatei Angas, but these do not correlate with the type of Circulus 

 when actual specimens are compared. 



The whole of the Neozelanic and Australian species bear a different 

 look when specimens (not descriptions and illustrations) are brought along- 

 side European forms, and I advocate the rejection of European names 

 until animals are examined. 



I herewith introduce four new generic names for usage in connection 

 with the Neozelanic forms, and most of these will come into use for Aus- 

 tralian species. I have collated some sixty generic names proposed for 

 shells of this group, and I have examined the types of the majority of these 

 genera and most of the species, both fossil and Kecent, allotted to the genera 

 named, in the hope that I may at some time produce a monograph of the 

 whole gioup. In addition to the named forms, I have many unnamed 

 species from the Kermadec Islands, Lord Howe Island, and Norfolk 

 Island, and these have been utilized in consideration of the groups 

 here named. The usage of these would certainly obviate such incon- 

 gruous assemblage as my friend Mr. Hedley (Proc. Linn. Soc. N.S.W., 

 vol. xxxiv, 1909) has produced in classing figs. 40, 41, 42, 43, 44, 45 on 

 plate xxxix as Liotia, and figs. 46, 47, 48, pi. xxxix, and figs. 49, 50, 51, 

 pi. xl, as Cyclostrema. 



