10 SYMBRANCHIATE AND APODAL FISHES. 
the length of the head behind the vent, and are confluent 
around the end of the tail, where alone a few short rays are 
perceptible. Pectoral fins wholly wanting. (intermedius 
intermediate—between javanicus and abbreviatus). 
Measurements in millimeters. 
Total length xe Be on te a: .. 304 
Len th of head (to gill-opening) Me Bc ae yh Meaty oe 
Length of trunk .. 53 he 28 5 aC aR .. 194 
Length from tip of snout to vent a Ac 30 de be iat 
Length of tail 3s ~ 3? ce ate rr Be ae SD 
Depth ot body Le a Ry ve ic ae Ke ae 6 
Length of snout... ff, “ys Sy si oe ee An 3 
Cleft of mouth ae Bi 0 ae a a ao a 5 
Type in the University Museum, Sydney. 
North Coast of Australia, probably Port Darwin (fide 
Masters. ) 
MURANID &. 
Ture Morays orn MURRIES. 
No tongue; gill-openings small, lateral, subcircular ; 
heart not far removed from the gills ; no pectoral fins. 
These eels are common in Australasian waters, whence 
19 species have been recorded. These belong to at least 
6 genera, but as many of the available descriptions omit 
certain characters necessary for generic identification, it 
is possible that some of the species which I have assigned to 
Gymonthorax should be placed elsewhere. Appended is an 
analysis of the Australasian genera. 
a. Vertical fins well developed, the dorsal originating in advance of the 
vent. 
b. Posterior nostril circular. 
c. All the teeth acute. 
d. Form not excessively elongated, the tail of moderate length. 
e. Lips continuous with theskin ot the head; each anterior nostri] 
with a long tube. 
f. Posterior nostril without tube, the margin sometimes 
slightly raised. 
g. Dorsal fin inserted behind the head, above or bebind 
‘he gill-openings Ae i RABULA. 
gy. Dorsal fin inserted on ihe oad considaralilee in advance: 
of the gill-openings ....... ii. GYMNOTHORAX. 
ff. Both pairs of nostrils with a conspicuous tube. 
BSG) Gp ae . . .. dil, MUNA, 
dd. Form greatly elongated, the tail very “JOne . . . iv. RHABDURA 
