FirNLAY.—Molluscan Fauna of Target Gully. 497 
species, and. perhaps this was the species Suter referred to; but in the 
(Gray) and Monodonta coracina (Troschel) is desirable, as these records 
are very doubtful. I have already shown (2a) that the record of Trochus 
tiaratus ©). & С. is almost certainly erroneous. 
As regards the nomenclature of the recorded Species, many changes are 
necessary, for the work of Iredale, Hedley, and others has shown that the 
old common names are often wrongly used. Most of the corrections to 
be made in the present list are contained in the “ Commentary " published 
been made by Hedley in various publications (4а, Б); some corrections 
were suggested in these Transactions by Cossmann (1); and I have 
) The following are the 
necessary changes as regards names of Target Gully shells :— 
Calyptraea maculata (Q. & G.) should be C. novae-zelandiae (Lesson) (6a). 
Chamostraea and Cytherea should respectively be Cleidothaerus (1) ana 
Antigona (6a). 
which is the type of Iredale’s genus Elachorbis (6a), so that here Circulus 
must give place to his genus-name. Circulus cingulatus Bartrum (7), from 
Kaawa Creek, is another member of this genus. 
should be Nuculana (ба), and Lissospira exigua Sut., which is 
congeneric with L. micra (T.-Woods), should be classed with it as a 
Lnssotesta (6a). 
Of the three Pectens listed, two belong to the genus Chlamys (6a)— 
namely, burnetti Zitt. and radiatus Hutt. 
The name Cyclostrema must disappear from the list. There are many 
minute species from Target Gully that fall very well into the genera of 
Iredale's family Liotiidae (6a), but Cyclostrema, as Iredale has shown, is 
indeterminable, being too indefinitely characterized. 
Cossmann, after examining specimens of Cylichnella soror Sut. and 
C. enysi Hutt., pronounced them both to belong to Bullinella (1). The 
unless it is shown that the two are identical, this is the genus-name it will 
bear. Iredale mentions (6a) that Leptothyra laeta Montrouzor, L. picta 
Pease, and Pseudoliotia imperforata Sut. are congeneric, a 
name Leptothyra (6a) for all; but later (6d) he has shown that Leptothyra 
was proposed for a different kind of shell, and has introduced the name 
Collonista for these species, with C. picta (Pease) as type.  Collonista 
imperforata (Sut.) has not yet been found fossil. 
ipes, Psammobia, and Tellina glabrella Desh. should respectively be 
Lucinida (6a), Gari (6a), and Macoma edgari Iredale (6a). 
Murex angasi Crosse falls into the genus Pteronotus (6a), while M. octo- 
gonus Q. & G. is placed by Iredale in Perry’s genus Hexaplex (ба). Trochus 
chathamensis (Hutt.) is the type of Thoristella Iredale (6a), but the shell 
so called from Target Gully is distinguishable by its umbilical characters 
from Recent specimens, and will be described later. All the Target Gully 
