;56 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



Jlah. — AVliangarci, North Island (Mr. Grosch). 



L. elegans is very distinct from all the species of the g;enus hitherto 

 described ; the aspect of the base and character of the lamcllce call to 

 mind some of the species of Sagda. 



7. Laoma (PhrixctXATHus) lucida, n.sp. PI. IV, Figs. 13-15. 



Shell very small, deprcssly-turbinate, subperforate, yellowish- 

 horny, shining, pellucid, thin, somewhat smooth, with fine lines of 

 growth (more distinct at the suture), microscopically finely decussate. 

 Spire conoidal; periphery rounded; whorls 5, gradually increasing, 

 rounded ; suture rather deep. Protoconch smooth. Aperture lunate, 

 transverse ; peristome straight, acute, somewhat callous, columella 

 lip subvertical, slightly reliexed. Umbilicus very narrow, partly 

 covered by the columella lip. Ease rounded. Diam. maj. 3, min. 2*75 ; 

 alt. 2 mm. 



Type in my collection. 



Hah. — Near Auckland, exact locality not stated (Mr. Wright). 



This species comes nearest to L. transitans, Suter, which, however, 

 is higher, banded with chestnut, and has the periphery keeled. 



The jaw and radula arc typical, the former being strongly papillate. 

 The formula of the radula is 20-1-20. 



var. ELEVATA, n.var. — This variety is higher ; the number of 



whorls is the same, but they are narrower, especially the fourth and 

 fifth. The protoconch is also smooth, and the shell microscopically 

 finely decussate. The colour is darker, the periphery keeled, and the 

 mouth destitute of callosity. Diam. maj. 3, min. 2-75 ; alt. 2-5 mm. 



Type in my collection. 



Hah. — Whangarei, North Island (Mr. Grosch). 



8. Laoma (Phrixgnathus) spiralis, n.sp. PI. IV, Figs. 16-18. 

 Shell very small, depressly-turbinate, perforate, pale-horny with 



somewhat irregular i-adiate rufous streaks, dull, thin, semi-transparent, 

 with close-set longitudinal membranous costellDe, produced into ragged 

 processes at the periphery ; there are five to six costelloe per millimetre ; 

 the interstices decussate. Spire conoidal, apex pointed, periphery 

 sharply keeled; whorls 5, gradually increasing, flatly rounded; suture 

 impressed, somewhat constricted, between the fourth and fifth whorls. 

 The protoconch is smooth, but the rest of the shell is distinctly 

 spirally striated, most conspicuously so on the base. Aperture trans- 

 verse, squarish; peristome straight, acute, outer lip sharply keeled, 

 basal lip regularly broadly arched, columella lip subvertical, slightly 

 arched, and reflexed. Umbilicus narrow, pervious, deep. Ease rounded. 

 Diam. maj. 3-25, min. 2*75 ; alt. 2 mm. 



'Type in my collection. 



]^ah. — Pelorus Sound, Marlborough, South Island (Mr. J. McMahon). 



L. spiralis stands nearest to L. phrynia, Hutton, but differs from it 

 in having a more acute spire and a sharper keel on the periphery, in 

 its less rounded whorls with their very distinct spiral striation, in 

 possessing ragged processes to the costcllae, and a much narrower 

 umbilicus as well as a constricted portion of the suture. 



