GRAPTOLITES OF AUSTRALIA 
65 
ing two specimens of Oncograptus from the El Paso Lime- 
stone (Canadian) of Marathon, Texas, United States, 
preserved in semi-relief in impure limestone. He showed 
“that Oncograptus can have no close relation to Isograptus 
but is derived from a Tetragraptid in which the mode of 
development had not progressed to the minutus stage of the 
Dichograptid t}q3e, where th.2^ is produced from th.l\ 
opposite and approximately at the same level as th.l^. It 
hardly seems probable that a proximal end with the struc- 
ture of Oncograptus could progress further towards the 
Diplograptid type of development and hence that Gardio- 
graptus (assuming this to bo its completely biserial descen- 
dant) could be an ancestor of any ‘normal’ Diplograptids.” 
F. Chapman and U. E. Thomas (147) recorded Cambrian 
Hydroida from Heathcote and Monegeeta Districts, New 
genera, species and varieties described and figured are 
Arcliaeocryptolaria recta Chapm. var. flexilis nov., Archaeo- 
lafoea serialis sp. nov., A. fruticosa sp. nov., ProtoJiaJecimn 
gen. nov., P. Jiallianum sj). nov., S jihcnoecium gen. nov., S. 
discoidalis sp. nov., Cactograptiis ftexisjnnosus sp. nov., C. 
plumigerus s]). nov., Acantliograptus candelahrum sp. nov. 
1937. — P. Ekstrdm (148) described and figured Phyllo- 
graptus nohitis Harris & K. and used it as a subzonal fossil 
in Norway. 
A. Monsen (149) described and figured many Australian 
forms that had been found in the Norwegian graptolite shales 
such as Dictyonema macgillvrayi, Didymograptus cf. 
aureus, D. cf. perditus, Tetragraptus cf. Uarti, T. decipiens 
and Goniograptus aff. palniatus. Monsen compares the Aus- 
tralian succession as given by Harris and Keble (121) with 
the Norwegian succession and adds a synoptic table correlat- 
ing the Norwegian with the Swedish, English, North Ameri- 
can, Australian and Bohemian zones. 
K. Sherrard and R. A. Keble (150) recorded graptolites 
from specified Upper Ordovician localities in the Parishes 
of Morumbateman, Mundoonen and Manton, near Yass, New 
South Wales. They gave a correlation table of the Yass 
occurrences with other places in New South Wales. From 
the Silurian beds near Yass, they recorded Monograptus 
flemingi, M. cf. tumescens, M. cf. nilssoni, M. cf. vomerinus 
and Dictyonema sp. They stated that “the graptolite bed 
overlies the Limestone Creek beds and incidentally the Bar- 
randella shales ... the succession seems to be quite con- 
formable and undisturbed . . . Hence the age of the Lime- 
stone Creek beds and the Barrandella shales, if Shearsby 
