574 Transactions. 
. 88), because there was no umbilical limb. Neither genus is, however, 
satisfactory for these shells. They differ from Ampullina, as was pointed 
out by Cossmann, in having no basal limb, and in being conspicuously 
lip, but there is a bulge over the umbilicus which is not present in 
Globisinum ; the shape also is quite different. In his review of New 
Zealand Geological Survey Palaeontological Bulletin 5, concerning Sinum 
(Eunaticina) elegans, Cossmann (1918, p. 24) says, “ La determination 
umbilicu in G. elegans from Waihao greensand the shell is more 
loosely coiled, so that the umbilicus is wider Awamoan species 
here i ightening of the coil and a consequent restriction of the 
8 
more primitive type of shell than Sinum or Eunaticina. — Globisinum has 
existed in the New Zealand area at least since the dawn of the Tertiary, 
and seems to have been represented in Australia by Natica arata Tate, from 
the Lower Tertiary of River Murray clifis. The genus may, indeed, 
extend back to the Cretaceous, for the small Natica ingrata Wilckens (1922, 
p. 7) perhaps belongs to that period. It has the same shape, and some 
specimens show spirals on the base (see Trechmann, 1917, pl. 19, fig. 90). 
Ampullina striata Gabb (1869 р. 161, pl. 27. fig. 40) from the Martinez 
beds appears to be an imperforate species of the genus. There is a con- 
siderable resemblance in form between these shells and Vanikoro Q. & € 
but, the animal and operculum being unknown, they had best be retained 
under the subfamily Naticinae. | 
KEY to SPECIES. 
miocaenicum : umbilicus rà 
wi: very large, no umbilicus ; spi od 
undulatum : moderate size, nó abus ides ee экө cb 
somewhat dilated. 
venustum : very large, no umbilicus ; spire rather high, columella concave. 
Globisinum elegans (Suter). (Plate 60, fig. 18.) 
1917. ж, шонет) elegans Suter, N.Z. Geol. Surv. Pal. Bull. 5, p. 1» 
E bos 1 Р. . 
Suter gives as locality of the type, “ i аг 
| | | the type, “ 630, Teaneraki (= Enfield), ne 
Oamaru, North Otago, T. Esdaile.’ This collection is an unreliable "e 
nn а | s specimens, and is WTO 
тне to Mr. Esdaile. Most of the specimens, including the type 9 
die «gans, are probably from McCullough’s Bridge, Waihao River, where 
Species 18 not uncommon. The aperture of the type is broken away 
АЙСУУ 
TS 
Peat 
ACRI 
amen 
PURSE ee 
TO PES aaan AA, 
а E EMO en a 
