FixLAYy.—Molluscan Fauna of Target Gully. 505 
(Hutt.) must be omitted from the Target Gully, Pukeuri, Ardgowan, and 
Awamoa lists, and from all other Awamoan тру 
the Veneridae more confusion seems ist than anywhere else. 
By far the commonest Venerid at Target “Gully is the shell Hutton 
described (5) as Chione vellicata, of which species the later Cytherea 
chariessa Sut., from Otiake, is undoubtedly а synonym. In the йаш 
of the Otago School of Mines, specimens of this shell are indiscrimi- 
dropped, as the species to which they refer do not really occur at Target 
Gully. Instances of this are Cytherea sulcata (Hutt.) and subsu 
(Sut.). As a result of weathering, the sculpture of Target Gully shells 
is not normal—the ribs appear too far apart; it is only on Pukeuri wu 
Otiake specimens that the true чират of fine, close, erect lamellae 
seen. Cossmann has stated that the C. oblonga (Hanley) of Target Gully 
differs from Pliocene forms, and uà proposed the n а (1). 
n there is no published figure or description of this ell Cossmann's 
ame is a nomen nudum; but there is at Target Gully a species heavier 
than C. vellicata Hutt., and with ттен hinge, and this is probably the 
species referred to b mann.* atei Gray (which, by the way, is 
the type of Iredale's genus Callanaitis is (6c), and ам bear this genus-name) 
е н арра occur at Target Gully, one shell having been found which 
inseparable from Recent examples. Callanaitis speighti (Sut.) is listed 
fioi Awamoa ; 1 have found one fragment of this species at Target 
Gully. Not во rare, but still rather uncommon, is the shell Suter identi- 
fied as Chione mesodesma (Q. & G.), but which Cos&mann considers dis- 
tinct from this Recent species and names C. marshalli (Теше nomen 
nudum. Study of a dozen or so specimens shows rr clearly that the 
shell is easily separable from C. mesodesma (Q. & G.) by its thinner, 
smaller, and more elongate shell, and its much finer sculpture, the ri 
being narrower and almost twice as dense as in the Recent shell. 
There is room for doubt as w the correctness of To identification in 
the following cases: Crassatellites obesus (A. Ad.), Placunanomia zelandica 
(Gray), Steptochetus n. sp., Turbonilla prisca Sut., Sinum carinatum (Hutt.), 
and Heliacus eliacus imperfectus Sut. Notes on these are given as follows :— 
terial shows the shell very variable in shape and dimensions ; 
also, Target forms are generally almost smooth except for a small 
ntrically-sculptured area below the beaks, rms from other 
o ma 
other localities must be studied e it ean be decided whether these 
and other differences are & apticitio. arietal or merely local. It may be 
noted that young shells of the Бени al allied Wharekuri species 
M. & M. are practically indistinguishable from C. obesus (A а . Ad.) : elongation 
occurs in a disproportionately rapid manner with a 
Р nomia zelandica (Gray): There is éousidota ble difficulty in 
correctly men fossil specimens of this genus and the related genus 
* Мт. 
% this family, в and in his "cinis which I have been privileged to see, has р ed 
suboblo in the хады que oam of Antigona, and C. vellicata in "the ection 
ra exiricoloides. ot the same genus. He also rejects the records of Dosinia rie Zitt. 
and Macrocallista ина (Sow.) from Awamoan localities 
