Fintay.—Molluscan Fauna of Target Gully. 507 
? 
n à 
replaced by that of Galeodea senex (Hutt.). The shell of Galeodea 
honalia, and Ficus. 
s completes the rather lengthy tale of necessary alterations in the 
list as it stands at present. At the same time, however, it must be borne 
in mind that no European palaeontologist has yet examined any con- 
a period of stress and struggle and rapid change of environment. For 
this reason Target Gully is not always a satisfactory collecting-ground : 
though species and specimens are very numerous, they are often ill- 
ed, and, worse still, atypical. If a species occurs there and also at 
typical one e application of this really matters, however, in only a 
special cases, p noted previously in thi er; the majority 
of the Target Gully shells form very satisfactory and fairly constant 
much more poorly preserved and fragile than at Target Gully, with a 
characteristic whitish and often chalky appearance. There is a consider- 
able difference in the common species, and the Ardgowan fauna is not so 
this bed being deposited probably during quieter conditions. Among the 
species which are fairly constant at Ardgowan but variable at Target Gully 
are Xymene lepidus (Sut. Pollia compacta (Sut.), Turricula oamarutica 
(Sut.), Venericardia lutea (Hutt.) The Pukeuri beds consist of very fine 
sandy material, well consolidated, and, when damp, almost of the con- 
sistency of clay. Very poor results are obtained if fossils are sought in 
