RECORDS OF THE 
AUSTRALIAN MUSEUM 
Volume 61 Number 1 27 May 2009 
Biogeographic and biostratigraphic implications of the Sermtognathus bilobatus fauna 
(Conodonta) from the Emanuel Formation (Early Ordovician) of the Canning Basin, 
Western Australia . Yong Yi Zhen and Robert S. Nicoll 1 
Taxonomic review of the Australian Drosophila setifemur species group, a new name 
for the D. dispar species group (Diptera: Drosophilidae) . Shane F. McEvey 31 
New records of Plio-Pleistocene koalas from Australia: palaeoecological and taxonomic 
implications. 
.Gilbert J. Price, Jian-xin Zhao, Yue-xing Feng and Scott A. Hocknull 39 
A revision of the Australian endemic clam shrimp genus Limnadopsis Spencer & Hall 
(Crustacea: Branchiopoda: Spinicaudata: Limnadiidae) . Brian V. Timms 49 
Two new species of Gnathothlibus Wallengren from Fiji and Samoa and a new species 
of Theretra Hiibner from Papua New Guinea (Lepidoptera: Sphingidae) . 
.Robert B. Lachlan 73 
A new species of the genus Mecyclothorax Sharp from New South Wales (Insecta: 
Coleoptera, Carabidae: Psydrinae) . Martin Baehr 89 
