762 GASTROPODA. [Pulmonata. 



ture of the post-nuclear whorls consisting of oblique retractive rounded 

 radial rib-stripe, about 8 per millimetre, crossed by microscopic spiral 

 lines, more distant and prominent on the base. Colour light fulvous, 

 obscurely variegated with reddish radiate streaks, more distinct and 

 forming rather close zigzag bands on the body-whorl. Spire convexly 

 conoidal, its height equal to that of the aperture. Protoconch of 1| 

 smooth whorls, broadly rounded. Whorls 5J, slightly convex, regu- 

 larly increasing, the periphery acutely keeled ; base flattish. Suture 

 prominently margined. Aperture slightly oblique, angularly lunate. 

 Peristome simple, straight, sharply angled. Columetta short, vertical, 

 slightly arcuate. Inner Up thin and sharp, expanded above. Um- 

 bilicus moderate, about one-fifth of the greatest diameter of the shell, 

 deep, gradate. 



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

 Animal unknown. 

 Type in the British Museum. 



Hab. North Island : Tom Bowline's Bay ; Whangaroa (C. 

 Cooper) ; Whangarei (Musson) ; Broadwood. Dargaville. 



38. Laoma Titania, Hutton, 1883. Plate 30, fig. 10. 



Phrixgnathus Titania, Hutt., N.Z.J.S., i, 1883, 476 ; T.N.Z.I., xvi, 177, 198. 

 Laoma Titania, Hutt., Man. Conch. (2), viii, 62, pi. 23, f. 82-84. 

 L. (Phrixgnathus) Titania, Hutt. : Hedley and Suter, P.L.S. N.S.W. (2), 

 vii, 650 ; Suter, J. de Conch., xli, 280. 



Shell very small, globosely conoidal, umbilicated, striated, cor- 

 neous with narrow brown zigzag bands, thin, pellucid, very faintly 

 shining. Sculpture consisting of fine oblique retractive growth- 

 striae, and very faint microscopic spiral lines on the base. Colour 

 pale-horny, with numerous narrow zigzag bands of light brown, ex- 

 tending over the base to the umbilicus. Spire conoidal, rather obtuse, 

 about a quarter higher than the aperture. Protoconch of 1-| whorls, 

 smooth, broadly convex. Whorls 5. rounded, regularly increasing ; 

 periphery obtusely carinated, base convex. Suture margined, dis- 

 tinctly canaliculate between the third and the fourth whorl. Aperture 

 slightly oblique, subcircular. Peristome thin, the margins converging. 

 Outer lip angled. Columella vertical, arcuate. Inner lip somewhat 

 callous, lightly expanded. Umbilicus broad and deep, perspective, its 

 diameter nearly one-third of the greatest diameter of the shell. 



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



Animal unknown. 



Type in : 'the Canterbury Museum, Christehurch. 



Flab. -Dunedin (Captain Hutton). 



Remarks. The"' only specimen I h;i\<' SITU is the type. Hutton 

 does not mention the partly canaliculate suture in his diagnosis of the 

 species ; he very likely considered it to lie an individual anomaly. 



