368 RHIPIDOOLOSSATE AND D0C0GLOSSATE MOLLUSCA OF N.Z., 



the base. Smooth ; brownish black with minute yellow spots ; 

 mouth brownish black. 



Quoys figure is bad, but it must be intended to represent this 

 species. The dentition is unknown. 



Moxodonta excavata. Adams, and Angas, Proc. Zool. Soc. of 

 London, 1864, p. 37. 



Habitat. — Manukau Heads, Auckland. 



Shell small smooth, shining ; not spirally marked, except on the 

 base. Brown, mottled with yellowish white, but variable in 

 colour. 



Referred with some doubt to this species as Adams' description 

 does not apply very well. The shell is depressed, the base 

 concave, and the periphery sharply angled. The dentition is 

 figured in Trans. N. Z. Institute, XV., p. 15, fig. r. 



Sub-genus. Latona. Hutton. 

 Shell as in Diloma but perforated. 



Monodonta hdietica. Hutton, Jour, de Conch., 1878, p. 32. 



Habitat. — Auckland. 



Shell purple with oblique slightly waved lines or spots of white ; 

 columella more or less stained with green. 



The dentition is unknown. 



Diloma australis, Tenison-Woods, (Pro. Eoy. Soc. Tas. 1876, 

 p. 145), appears to be closely allied. 



Family. Pleurotomabiid^;. 



Genus. Scissurella. D'Orbigny. 



Scissurella mantelli. Woodward, Proc. Zool. Soc. of London, 

 1859, p. 202, pi. 46. 



Habitat. — North Island. 

 I have not seen this species. 



Family. Stomatellld/e. 



