206 Transactions, — Zoology. 



P. FULMINATA, HuttOll (1882). 



Spire convex, finely striated ; very narrowly urnbilicated ; columella 

 sub-callous. Pale horny with reddish-brown undulating bands. Diameter 

 •84 inch. Dentition, 38-1-38. 



Stewart Island (T. Kirk). 



Sec. ELASMOGNATHA. 



Jaw in a single piece, with a more or less quadrate projecting plate above. 

 Fam. Janetlidce. 



Animal limaciform, without tentacles; mantle rudimentary or absent. 

 Eespiratory orifice near the median line on the back. 

 Genus Janella, Gray. 



Mantle absent ; shell rudimentary ; a mucous pore in front of the 

 respiratory opening. Back with a longitudinal groove giving off oblique 

 branches on each side. 



J. eitentaculata, Quoy and Gaimard (1832) ; Athoracophoriis bitentacu- 

 latus, Gould (1852) ; J. anUpodarum, Gray (1853). 



Yellowish, marked with pale brown ; tail depressed, acute. Dentition, 

 250-1-250. 



Var. papillata, Hutton (1879). 



Back with small papillae. 



North Island.— Wellington (F.W.H.). 



South Island. — Tasrnan Bay |(Quoy) ; Christchurch (Fereday) ; Grey- 

 mouth (Helms) ; Dunedin (F.W.H.). 



Auckland Islands (H. Krone). 



Chatham Islands (H. Travers). 



J. MARMOEEA, Hutton (1879). 



Blackish marbled with pale brown ; tail rounded, obtuse. Dentition, 

 258-1-258. 



South Island. — Dunedin (Bourne) ; Greymouth (Helms). 

 Sec. AGNATHA. 



Jaw absent ; all the teeth aculeate ; the transverse rows forming an 

 angle salient posteriorly. 



Fam. Streptaxidcc. 



Animal heliciform. Shell globose or depressed. 

 Genus Streptaxis, Gray. 



Shell urnbilicated, globosely depressed ; the base polished ; convex ; 

 striated above ; the last whorl enlarged and descending ; peristome ex- 

 panded, reflected. 



S. taranaki, Gray (1843). 



Umbilicus moderate ; peristome thin, expanded ; whorls 5. Pale horny, 

 shining and white within. Diameter *64 inch. 



