Pnryphanta.] GASTROPODA. 



Buccf/l ma.ftfi large and muscular ; the oesophagus enters in the 

 anterior third, and has a small salivary duct on either side. 



Radula having the formula 40 x 14 + 1 + 14. Teeth all aculeate, 

 increasing in size from the middle to the last but one, the last tooth 

 being about half the length of the foregoing tooth. 



Reproductive Organs. The male organ in its anterior half is slender, 

 thence large and sac-like, with the retractor muscle at the posterior end. 

 The vas deferens separates from it a little below the apex. The 

 spermatheca, where it separates from the oviduct, is large and sac-like, 

 thence contracted to a slender tube that follows the convolution of the 

 uterus, to which it is attached by fine tissue. The spermatheca, 

 elongated, somewhat flat and irregular in outline, is of sponge-like 

 texture. 



Type in the British Museum. 



Hab. Lowry Bay, Port Nicholson (Sir J. Hector) ; Crow's Nest, 

 four miles north of Wellington, at about 1,000ft. altitude (R. M. 

 Laing) ; Wainuiomata (G. V. Hudson) ; Pohui (fide Hutton) ; Tararua 

 Mountains (H. Hamilton). 



Genus 3. SCHIZOGLOSSA, Hedley, 1892. 



Xchizoglossa, Hedley, P.L.S. N.S.W. (2), vii, 30, Nov. 1892, 391. Type : 

 Daudebardia novoseelandica, Pfeiffer. Daudebardia, Pfeiffer, 1862 ; not 

 of Hartmann, 1821. 



Shell worn on the tail, incapable of containing the body, and 

 reduced to the function of a shield to the lungs and heart, rudiment- 

 ary, paucispiral, nacreous within, columella excavated into a pit for 

 the reception of the shell-muscle. Animal lacking rhachidian teeth. 

 (Hedley). 



Distribution. New Zealand only. 



Schizoglossa appears to me referable to that section of the Testa- 

 cellidce embracing its compatriots, Rhytida, Delos, and Paryphanta, 

 with which the lack of rhachidian teeth and the simplicity of the 

 uenitalia allies it. Of these perhaps Paryphanta stands the closest. 

 (Hedley.) 



The presence or absence of the central tooth is evidently not of 

 systematic value in the Rhytididce. Schizoglossa is most likely a 

 Paryphanta in which the shell has become much reduced. A similar 

 relation exists between Ranfurlya and Flammulina. 



1 . Schizoglossa novoseelandica, PfeifEer, 1862. Plate 30, figs. 16, a, b. 



Daudebardia novoseelandica, Pfr., Mai. BL, viii, 146 ; M.H. Viv., v, 10 

 Hector, Cat. Land Moll. N.Z., 2. Hutton, M.N.Z.M., 12 ; T.N.Z.I., xvi. 

 208. Schizoglossa novoseelandica, Pfr. : Hedley, P.L.S. N.S.W. (2), vii. 

 387, pi. 9, f. 1-3; Hedley and Suter, ibid., 628; Suter. J. de Conch., 

 xli, 288. 



Shell rudimentary, auriform, thin, opaque, oval, increasing irregu- 

 larly. Sculpture : The protoconch first smooth, then spirally grooved, 



