Fintay.—New Shells from New Zealand Tertiary Beds. 451 
Natica consortis n. sp. oe 49, figs. la, i lc.) 
compressed, wi асна umbilical funicle. "hes and protoconc 
as in N. iic Spire low, Pepe flattened at apex. Whorls 44-5, 
base flatly convex. Suture as in preceding species for first two whorls, 
ане е оп Анн whorl, but exten via orwards past columella 
before joining inner lip. Colu mella oblique, not mad 80 rage cnt as in 
N. notocenica, considerably excavated below before meeting outer lip. 
Inner lip spreading less, both on parietal wall and into umbilicus, than 
in the previous species. Funicle cord-like, not strong, marked off by 
groove below, and leaving wide opening above, much less corrugated 
than in N. notocenica, and ending in a slight convex lump. Operculum 
unknown. 
Height, 8-5 mm. ; diameter, 8-5 mm. (type). Height, 10-5 mm.; dia- 
meter, 9-5 mm. (largest specimen from Ardgowa n). 
Type ism three others, from Pukeuri, in author's collection. Com 
at Ardgowan ; co also from Rifle Butts, Target Gully, and Айба 
(from ‘eich boulders). 
This species om a slight resemblance to N. maoria Finlay (australis 
Hutt., not of d’Orb.), but the funicle in the umbilicus at once distinguishes 
it. From its accompanying but commoner relative N. notocenica Finlay it is 
sundered by its weaker and different funicle, less ovate shape, and especially 
by its flatly bordered sutures. This last feature and the weak funicle 
separate it also from N. zelandica dp & G., which has the whorls much more 
ое into the “к, than . notocenica, but much less so than in 
is species does not e 
to the Waihao horizon, being represented there by the following foco be ly 
кёл form. 
Natica praeconsors n. sp. 
This in most details is so similar to the preceding species that a full 
diagnosis is unnecessary, and only points of difference need be mentioned. 
The only three examples seen are of smaller size, much thinner, with whorls 
a little more 55, and base more rounde Columella very weak, 
N : rti 
pas Т mm. ; diameter, 6 mm. (type). 
Type, from greensands at MeCullough's Bridge, Waihao, in Mr. В. 8, 
Allan's collection. 
15* 
