IN THE QUEENSLAND MUSEUM. 
13 
longest If in the diameter o£ the eye. Axillary pore large. Brown, 
lighter below (medius, moderate; harhus, barbel). 
Length of type 288 millimeters. 
Type in the Queensland Museum, Brisbane. 
? Queensland. 
It is with some hesitation that I have decided to describe as a 
valid species the solitary specimen which I have had the oppor- 
tunity of examining, and of whose exact habitat even I am unaware ; 
and all the more so that I am so deeply impressed with the confu- 
sion, which has been caused in the history of the fluviatile eel- 
catfishes by previous crude and inadequate descriptions of supposed 
new forms. Nevertheless the example here described differs in so 
many small but not unimportant particulars from a Neosilurus 
Jiyrtlii of the same size that I have no option but to consider them 
distinct. 
NEOSILURUS ROBUSTUS. 
HAIRYHEADED T AND AN. 
Skin mostly smooth, anteriorly with closely set hair-like fila- 
ments. Depth of body 3f, length of head 4| in the total length. 
Head with scattered, wart-like papillae, its width If in its length, 
which is 2 in the trunk. Diameter of eye 5|- in the length of the 
head and 2f in that of the snout, which is obtusely pointed and wider 
than long. Interorbital region flat, its width much greater than 
that of the mouth and 2f in the length of the head. Each group of 
premaxillary teeth about thrice as wide as long at the symphysis ; 
vomerine group crescentic, If time as wide as long mesially ; 
mandibular groups subovate, each about If time as wide as long, the 
outer extremity forming an obtuse point ; all the teeth more or less 
conspicuously tipped with brown. Barbels short, the nasal not quite 
reaching to the eye, its length 3 in that of the head ; maxillary 
barbel reaching to the middle of the eye; postmental barbel extending 
horizontally backwards to the gill-opening, 2| in the length of the 
head ; mental barbel subequal to the maxillary. Predorsal length 3 
in the total length ; dorsal spine curved, smooth in front, feebly 
serrated behind, the teeth directed outwards, its length If in that 
of the head ; longest soft ray not nearly so high as the body below 
it : second dorsal fin short. Anal fin with about 82 rays, its distance 
from the tip of the mandible 2f in the total length. Pectoral fin 
with i 10 rays, the spine similar to that of the first dorsal, the soft 
rays when appressed not quite reaching to the ventral fin. Yentral 
rounded, with 12 rays, its length 2 in that of the head. Gill-rakers 
