MtJEDGCH : NEW ZEALAND MOLLTJSCA. 321 



Hah. — North Island : Inner Harbour, Napier. Found in considerable 

 numbers around the margin of a brackish pool (F. Hutchinson, jun.). 



Type. — Wanganui Museum. 



Animal (Fig. 4). — Foot comparatively large, flat, and undivided ; 

 tail abruptly rounded ; head produced into a retractile muzzle, 

 emarginate anteriorly; tentacles of medium length, expanding and 

 uniting at the base so as to conceal the posterior portion of muzzle, 

 eyes immersed and situate in the lower half of tentacles ; colour 

 whitish throughout. 



Jaws (Fig. 5). — Forming two irregularly ovate objects united by 

 a narrow band, they are dark in colour, and the surface, as it were, 

 imbricate with scale-like markings. 



Dentition (Fig. 6). — Has the formula 23-2-1-2-23, in numerous 

 transverse curved rows, the rachidian short and broad, with eleven 

 minute cusps ; the laterals elongated, with the apex somewhat 

 expanded and curved inwards, the first armed with six or seven, the 

 second with seven or eight minute denticles ; uncini about twenty- 

 three, having a single rounded cusp, and becoming shorter as they 

 proceed outwards. 



It is with some hesitation I refer this species to Cirsonella, Angas, 

 a genus founded on shell characters only (Proc. Zool. Soc, 1877, 

 p. 38), and created for the reception of C. Australis, Angas. There is 

 no family, to my knowledge at least, in which it may be included ; 

 the dentition of C Neozelanica seems nearest to that of the 

 Cyclostrematidse, and I provisionally place it near that family. The 

 investigation of nearly allied forms will doubtless pave the way to 

 a more satisfactory classification. 



My thanks are due to Mr. H. Suter, of Christchurch, who, by 

 letter, has given me much kindly assistance. . 



3. Endodonta (Thaumatodon) tat: (Pfr.). 



miix tau, Pfeiffer: Malak. Bliitt., Ed. viii (1862), p. 148; Mon. 



Helic. Viv., vol. v, p. 159. 

 Helix taxi., Pfr. : Hector, Cat. Land Moll. IS'ew Zealand, 1873, p. 12. 

 Patula tiynandra, Hutton : JSTew Zealand Journ. Sci., vol. i (1883), 



p. 475; Man. New Zealand Moll., 1880, p. 8; Trans. 



New Zealand Inst., vol. xvi (1883), pp. 175 and 192. 

 Hndodonta varicosa (Pfr.) : Suter, Trans. New Zealand Inst., vol. xxvi 



(1894), p. 128, pi. XV, fig. 12. 

 Endodonta timandra (Hutt.) : Suter, loc. cit. and pi. xv, fig. 13. 

 Patula [Endodonta) timandra, Hutt : Pilsbry, Man. Conch., ser. ir, 



vol. viii, p. 84, pi. xxiv, figs. 21-23. 



The identification of Helix tau, Pfr., has hitherto been most 

 doubtful. At the suggestion of Mr. Suter, of Christchurch, I com- 

 municated with Dr. Rudolf Sturany, of the Hofmuseum, Vienna, 

 who very kindly sends the following report, and also mentions that 

 the whole of Pfeiffer's collection has been purchased by Dr. Dohrn, 



