322 PEOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



of Stettin, and presented, to the museum of tliat city, and through 

 Dr. Dohrn's kindness he obtained the loan of type-specimens. 



" The two original examples of Helix tau, Pfr., forwarded to me for 

 examination contain within the mouth three deep inward running 

 lamellae, in a similar position to E. timandra, Hutton, and much remind 

 me of that species. This important feature is not mentioned in 

 Pferffer's original description ; otherwise, his description agrees exactly 

 with the examples " 



The description of the sculpture of E. tau agrees equally well with 

 E. timmidra, and they are doubtless one and the same species, being 

 the only known New Zealand form possessing three teeth in the 

 aperture. 



Sah. — North Island : Auckland, Howkiwi, Thames, "Wangarei, 

 Mt. Wellington, Pirongia Mt., Hawkes Bay, Forty-mile Bush, 

 "Wellington, Kaponga, Altham. South Island: Kenepuru. 



4. Ekdodonta (Chaeopa) mutabilts (Suter). 



Patula mutabilis, Suter: Trans New Zealand Inst., vol. xxiii (1891), 



p. 84, pi. xvi, figs. 2, a, h, B, C. 

 Charopa mutabilis, Suter: Hedley & Suter, Proc. Linn. Soc. New 



South Wales, ser. ii, vol. vii (1893), p. 656. 

 Charopa tau (Pfr.) : Suter, Proc. Linn. Soc. New South Wales, ser. ii, 



vol. viii (1894), p. 499 {nan Pfeiffer). 

 Patula (Charopa) mutabilis, Suter: Pilsbry, Man. Conch., ser. ii, 



vol. viii, p. 101, pi. xix, figs. 25-27. 



Dr. Sturany's report on H. tau, Pfr., clears up the position of this 

 shell, which had been referred to that species. 



Hah. — South Island: Hooker Yalley (Suter), Castle Eock, 

 Southland. 



5. FLAMMTJLnsTA (Phenacohelix) pilula, Eeeve. 

 PI. XYI, Figs. 9-11. 



Since there is no published description of the anatomy of this 

 species, I offer the following note. The external features of the 

 animal are, briefly, a narrow undivided foot, supra-pedal grooves, and 

 caudal mucous pore, the last-mentioned surmounted by a small papilla. 

 The mantle is a little anterior, with an even margin, and scarcely 

 reflected over the peristome of the shell. 



Jato (Fig. 9). — Arcuate, composed of about twenty-three narrow 

 plates, slightly overlapping at the sides and indenting the lower 

 concave margin. 



Deflation (Fig. 10).— Has the formula 20-1-20, or 7-13-1-13-7, in 

 transverse, nearly straight rows ; length of rachidian tooth rather more 

 than twice its breadth, reflection large, without side cusps ; laterals 

 nearly twice as wide as the rachidian, and armed with two strong 

 cusps having a meso- and an ectocone, the former being the larger ; 

 passing outward, the teeth gradually assume a sloping position, the 



