UNRECORDED GENERA OF THE OLDER TERTIARY FAUNA, 181 
Genus Ampullina. 
This name is in substitution for Ampullaiia, conchologically I 
do not know how to separate the one from the other ; but as our 
fossil is marine, the transference becomes necessary. Only one 
species occurs with us, A. effusa, mihi, which will be described in 
my forthcoming Part iv. of the “ Gastropods of the Older Tertiary 
of Australia”; it is restricted to the Eocene at Adelaide. 
Genus Sigaretus. 
This genus, which commenced in the Chalk has a few Eocene 
species and about twenty in recent seas, is an addition to our 
Eocene Fauna through the discovery of two examples of an un- 
described species by Mr. G. B. Pritchard in the Spring Creek beds 
near Geelong. The new species will be figured and described in 
my forthcoming Part iv. of the ‘Old Tertiary Gastropods” as 
S. microstirus. 
Genus Calyptropsis, nov. 
Examples:—Trochita turbinata,’ Ten.-Woods; Eocene, Muddy 
Creek. Crepidula umbilicata, Johnston; Hocene, Table Cape. 
Calyptropsis arachnoideus, Tate, (M.S.); Hocene, Adelaide. 
Shell like Calyptrea, but umbilicated and with a columella- 
insinuosity at the umbilical border. 
Family PyRAMELLIDZ. 
Genus Acteopyramis, Fischer, 1885. 
This is in substitution for Myonia (Fam. Actzonide) in which 
the species was wrongly placed, the heterostrophe apex removes it 
from that family. 
ACTHOPYRAMIS OLIVELLEFORMIS, spec. nov., Pl. xi., fig. 2. 
Shell elongate-oval, body-whorl longer than spire ; aperture a 
little less than half the total length. Whorls seven, shining; 
suture concealed by a slight thin imbrication from preceeding whorl. 
Surface sculptured with microscopic graved spiral lines; the basal- 
half of the body-whorl deeply sulcated, the width of the interven- 
ing bands decreases somewhat towards the base. Aperture 
