1!V W. L. MAY. 59 



This is very close to M . nvrio^i , Crosse, of which it mav 

 be a variant. It is more broadly shouldered, with a larger 

 aperture, and has the toothed outer lip. 



PI. XIV., fig. 6. 



Margixei.la multidextata, ip. nov. 



Shell small, white, bx'oadly-ovate, spire hidden, aper- 

 ture rather wide. Columella convex, bearing about nine 

 main plications, of which the anterior three are the 

 sti'ongest; there are several small subsidiary teeth between 

 the upper ones. Outer lip ri^es above the summit; is 

 strongly thickened and armed inside with about ten minute 

 denticles. 



Length, 1.5; breadth, 1.2 mill. 



Tyjoe, with three others from about ten fathoms, be- 

 tween Gordon and South Bruuy, P Entrecasteaux 

 Channel. 



This species is nearest related to M. tliniiincitsi'i, I\Iay ; 

 it differs in being shorter and broader, having a wider 

 aperture, stronger dentition, and the crcnated outer lip. 

 The small intercalated teeth have not been noticed in any 

 other Ta?manian Marginella. 



PI. XIV., fig. 7. 



Margixella ixcehta, sp. nov. 



Shell minute, smooth, white, opaque, ovate; spire 

 small but distinct, of two whorls. Aperture narrow above, 

 almost linear for half its length, then widening to the 

 rounded front. Outer lip moderatelv thickened, slightly 

 cui-ved, smooth within. Columella convexly rounded, with 

 two distinct plaits, rather near together, of which the 

 anterior is the sti'onger. 



Length, 2; breadth, l.G mm. 



Type, with five others, from about 40 fathoms off 

 Thoiiin Bay. This species closely resembles J/, frinr'nut'i , 

 May, in size and shape; it has more spire, is broader, with 

 a more curved columella, and onlv two i>laits. 



PI. XIV., fig. s. 



Iredale in Trans. N.Z. Inst, for 1914, p. 457, pro- 

 posed a new genus Esteu for a Rissoid group, and men- 

 tions Rixxoa rolumunria, Hedley and ^lay, as a good repre- 

 sentative. We have a large number of specie;, which seem 

 to fall naturallv into Iredale's genus. There are some 

 seventeen Tasmanian named species, and others not yet 



