SYMBRANCHIATE AND APODAL FISHES NEW 
TO AUSTRALIA. 
By J. DOUGLAS OGILBY. 
[Read before the Royal Society of Queensland, 
January 27, 1906.] 
In the following pages will be found full descriptions of 
three additions to the fish-fauna of Australia. These are: 
(1) The very interesting symbranch Amphipnous cuchia, 
not hitherto recorded east of Burmah, but now described 
from a Queensland specimen. The small order to which 
this fish belongs is, however, well represented in our waters 
by one, perhaps two, species of Chilobranchus and a 
Symbranchus. (2) A moringuid from North Australian 
waters belonging to the genus Aphthalmichthys, which 
I am constra ned to describe as new, since it is in many 
respects intermediate between the typical vermiform 
A. javanicus and the more robust A. abbreviatus. And (3) 
a murenid, the easterly limit of whose range has so far 
been given as Java, but of which we have now two fine 
specimens from the rivers flowing into Moreton Bay. 
ORDER SYMBRANCHIA. 
THE SINGLE-SLIT EELS. 
Bopy anguilliform. Scales small or absent. Premaxillary, 
maxillary, and palatine elements well developed and 
dist nct {rom one another, the first constituting the entire 
outer margin of the upper jaw. Opercular apparatus 
complete. Gill-openings inferior, confluent in a single slit ; 
accessory branchial organs sometimes present. Vertical 
fins vestigiary, reduced to folds of the skin; no paired 
fins. Vent posterior. Cranium with the bones firmly 
united; a pair of exoccipital condyles. Symplectic bone 
A 
