IREDALE: LANB MOLLUSCA of the KEllMADEC ISLANDS. 385 



Nesopupa (p. 432) for the shells previously named Pagodella, H. and 

 A. Adams, and Ptychochilus, Boettger, both these names being pre- 

 occupied. Pilsbry's diagnosis reads — 



"Small, dark brown, opaque and lustreless; ribbed, costulate or 

 striate, the aperture armed . . . , lip expanded. 



"Type, N. tmitilla, Gld. This is par excellence the Polynesian 

 type of Pupa. A number of sections may perhaps eventually be 

 distinguished, but only one seems to have any foundation in nature. 

 This may be defined thus : 



'' JVesopupa, s.s. Peristome discontinuous above; palatal folds of 

 moderate length. 



" Li/ropiipa, n.sect. Peristome continuous ; upper palatal fold very 

 long ; shell strongly costate. 



"Type, m lyrata, Gould." 



The species here described resembles Nesopiipa in shell cliaracters, 

 but the unarmed mouth easily separates it. Moreover, it is not 

 "opaque and lustreless" as I understand those words. I would 

 rather describe some specimens as " semitransparent and somewhat 

 glossy ". I liave little doubt, however, that my genus will be later 

 degraded, as some specimens of Nempxipa I have examined show that 

 the teeth grow with age and are absent in the juvenile stage. These 

 species, however, differ somewhat from the type of Nempupa, and the 

 series may not be congeneric, whilst they cannot be allotted to 

 Lyropupa. 



Pronesopupa senex, n.sp. PI. XVIII, Figs. 1, 2. 



Shell minute, pupoid, dextral, few whorls. Colour brown. Whorls 4 ; 

 the first whorl and a half smooth; the succeeding whorls have 

 a sculpture of distant sharp lamellse, the intervening spaces threaded 

 with strioe ; in some shells the lamellae are obsolete, or only occur on 

 the last half whorl, whilst in otliers they regularly appear on each 

 whorl ; on the last whorl about a dozen can be counted, either 

 indistinct or very prominent. A narrow deep umbilicus is present. 

 The columella is straight and reflected ; aperture discontinuous, almost 

 circular, with the outer lip reflected and expanded. In general 

 shape the specimens vary, some being more loosely coiled than others 

 wliich have a liumped-up appearance. Height 2, breadth 1-25 mm. 



Hah. — Sunday Island, Kermadec Group. Living on tree-trunks, 

 not moss-covered, and liiding in the crevices of bark in dry weather. 



jS'o species, in any way allied to this, has yet been recorded from 

 New Zealand, though I have seen very similar sliells with the mouth 

 fully armed from Fiji. Nothing of this nature has yet been found on 

 Lord Howe Island, but the species named Vertigo norfolcensis by 

 Sykes, from Norfolk Island, is referable to Nesopupa ; it is, however, 

 very much larger and sinistral. 



Family Tobnateixinid^. 

 My systematic notes on the molluscs referred to this family are 

 brief, for the following reason : When I had got together a few notes 

 regarding the synonymy and forms, Pilsbry published in the Nautilus 



