Endodonta.] GASTROPODA. 721 



streaks. Spire very little raised, flattish or broadly convex. Proto- 

 conch of 1^ convex volutions. Whorls 5, convex, slowly increasing, 

 periphery and base rounded. Suture impressed. Aperture somewhat 

 oblique, lunate. Peristome thin and sharp, retractive toward the 

 suture, where it forms a not very deep sinus. Golumella short, ver- 

 tical, arcuate. Inner lip not thickened and not reflexed ; parietal 

 wall with a thin broad and shining glaze. Umbilicus rather broad, 

 deep, the nucleus distinctly visible, about one-third of the greatest 

 diameter. 



Diameter -Maj., 2-7 mm. ; min., 2-2 mm. : height, 1-75 mm. 



Jaw and radula normal. Formula of teeth of radula 

 12+4+1 + 4 + 12. 



Type in my collection. 



Hob. -South Island : Capleston, near Reef ton, type (Cavell). 

 Stewart Island : Half -moon Bay (A. Hamilton). 



Remarks. In Stewart Island specimens the last whorl is slowly 

 descending, the spire therefore slightly higher. 



23. Endodonta Roseveari, Suter, 1896. Plate 10, figs. 5, 5o, 56. 



Endodonta (Charopa) Roseveari, Suter, P. Mai. S., ii, 1896, 34, pi. 4, f. 5-7. 



Shell small, subdiscoidal, umbilicated, finely ribbed, horny with 

 brown streaks, dull, thin, semitransparent. Sculpture : Protoconch 

 with fine radiate striae, no spirals ; the post-nuclear whorls with fine 

 sharply elevated riblets, about 10 per millimetre, acutely protractive 

 on the upper surface, sinuate on the periphery ; the interstices minutely 

 decussate. Colour horny, with radiate rufous streaks, which are irre- 

 gularly disposed on the upper surface, form zigzag lines on the peri- 

 phery, and are obscurely tessellated on the base. Spire flatly de- 

 pressed. Protoconch obtuse, of 1^ convex turns. Whorls 5, convex, 

 slowly and regularly increasing ; periphery and base rounded. Suture 

 impressed. Aperture lunate, oblique. Peristome acute, regularly 

 arched, retractive toward the suture, and forming a rather deep 

 sinus, with a broad concave sinuosity at the periphery. Columella 

 short, arcuate. Inner lip somewhat callous, not reflexed ; parietal 

 wall with a broad thin and shining glaze. Umbilicus moderately 

 wide, nearly a quarter of the greatest diameter, showing all the whorls 

 and the nucleus. 



Diameter Maj., 4 mm. ; min., 3-5 mm. : height, 2 mm. 



Animal unknown. 



Type in my collection. 



Hob. North Island : Hokianga ; Waiheke Island (H. S.) ; Titi- 

 rangi (H. S.) ; Ohaupo (Musson) ; Tarukenga, near Rotorua, type 

 (Major Broun) ; Ruatahuna (E. Best) ; Toko, near Stratford (R. 

 Murdoch). 



Remarks. The specimen from Titirangi has the riblets a little 

 farther apart, 8 per millimetre. 



