522 Mr. H. B. Preston on new 



rather the smaller. The cingulum, again, shows the same 

 depression behind, but to a less extent, and hardly forms an 

 internal cusp. 



The palate is narrow, and the fragment, viewed from the 

 upper surface, indicates a longish and rather pointed snout. 



The attribution of this species to the genus Hyotherium is 

 tentative. 



I name this species after my friend Dr. W. M. Jeffreys, 

 who accompanied me on my first expedition to Baluchistan 

 and to whose energy and skill in collecting I owe a great 

 deal. 



The measurements of the teeth are : — 



Length. Breadth. 



cm. cm. 



PM a 0-7 0-55 



PM 3 0-8 0-7 



PM 4 0-75 08 



-M 1 1-0 1-0 



M 2 1-0 1-1 (front half). 



LXV. — Characters of new Genera and Species of Terrestrial 

 Mollusca from Norfolk Island. By H. B. PRESTON, 

 F.Z.S. 



THROUGH the kindness of Messrs. Gregory M. Mathews and 

 T. Iredale, all the terrestrial and fluviatile shells collected by 

 Mr. Hoy Bell during his recent prolonged stay on Norfolk 

 Island have been handed to the author, from which material 

 the following species are diagnosed, no figures being given 

 at present, as it is intended to do this in a forthcoming work 

 dealing exclusively with the fauna of that island and the 

 adjacent islets. 



Dendrolamellaria, gen. nov. 



{Shell vitriniform, transparent, with smooth apical whorls 

 and minutely transversely striate last whorl. 



Genotype: D. mathewsi, Preston. 



The genus, which is arboreal in its habits, resembles 

 almost exactly in form the marine genus Lamellaria j it 

 probably belongs to the family Limacidce. 



Dendrolamellaria mathewsi, sp. n. 

 Shell rather large, whitish, transparent, shining, with 



