FixLAY.—New Zealand Tertiary Rissoids. 485 
Type and many paratypes, from Pukeuri, in the author's collection. 
Also from Mount Harris. 
is shell has only superficial analogy with the Recent M. cheilostoma 
(Ten.-Woods), though resembling it in appearance. 
Linemera awamoaensis n. sp. (Fig. 5.) 
Shell small, elongated, finely clathrately sculptured, rather thin, imper- 
forate. Protoconch as in L. pukeuriensis. Shell 
convex, body-whorl regularly rounded. Six very fine spirals per whorl; 
their width. Four more similar and equally-spaced spirals on base, and 
sometimes traces of a ials commence at same time as spirals, 
are very fine and numerous, bluntly convex, interstices sube em 
section. 
body-whorl turning up as in L. pukeuriensis. Suture well impressed 
perture ovate, a little oblique, projecting basally, larger than in 
L. pukeuriensis, and the continuous peristome not so much thickened 
inside the sharp edge, though an apertural varix is distinct. Columella 
slightly oblique, arcuate. Inner lip as in L. pukeuriensis. 
Height, 2-1 mm. ; diameter, 1-1 mm. ; height of aperture, 0-8 mm. 
Type and four paratypes, from Awamoa, in the author’s collection. 
Easily distinguished from its near relative М. pukeuriensis by shorter 
spire and much finer sculpture. 
Lironoba polyvincta n. sp. (Fig. 6.) 
rounded. 
whorls, has 5 narrowly-rounded strongly-projecting spiral ribs per whorl, 
lowest two subequal and strongest, next two weaker, and uppermost one 
picuous, margining suture above. On later whorls a faint rib margins 
f : 
and above. Aperture very little oblique, ovato-polygonal, peristome con- 
tinuous, much thickened by a strong exterior varix, internally duplicated 
by small raised rim. Columella arcuate, inner lip raised, but no umbilical 
chink, encircled by a slight basal ridge. 
eight, 2-3 mm.; diameter, 1-2 mm. ; height of aperture, 0-9 mm 
Type and several paratypes, from Pukeuri, in the author's collection. 
Also from Target Gully. 
The genus is new as a fossil in New Zealand. It has much narrower 
and more numerous ribs than the Recent L. suteri (Hedley); though the 
protoconch is spirally lirate, it is here referred to Lironoba rather than to 
