943 MR. G. KREFFT ON NEW AUSTRALIAN FISHES. [NoV. 28, 



anal yV» of caudal i of the total length. Height of head ^, of body i 

 of dorsal •^, of ventral ^, of anal ^ of the total length. 



Uj/es. Diameter -^ of length of head ; nearly 1 diameter apart, 2 

 diameters from end of snout. 



Body elongated and slightly compressed, the upper profile ascends 

 considerably from the snout to the commencement of the dorsal fin. 

 No raised adipose keel along the back. 



Mouth inferior, overhung by the snout. One pair of cirri on 

 snout, as long as the orbit ; two pairs on maxillae, and two on the 

 lower jaw. A free, bifurcated suborbital spine under the anterior 

 third of the orbit. Anterior nostril tubular, divided by a valve from 

 the posterior. 



Fins. Pectoral arises under the operculum ; it is as long as the 

 head, and terminates at a distance equal to that from the snout to 

 the posterior margin of the orbit from the commencement of the 

 ventral, which does not quite reach the anal. Dorsal arises rather 

 anterior to the termination of the pectoral, and ends just before the 

 commencement of the anal. Dorsal fin highest anteriorlj^, with an 

 elevation about its centre. Caudal nearly square, but with a slight 

 emargination from its third to its sixth ray. Internal pectoral ray 

 bony, with an enlarged extremity. 



Scales minute, covering the body. 



Colours. Greyish, becoming dirty white below the centre of the 

 body. A dark hne passes from the eye to the centre of the tail ; 

 along its first half are six black spots, whilst the whole extent of the 

 back is irregularly Ihieated. Fins yellowish. Dorsal with four dark 

 bands along it. Caudal with three bands, and a black margin. A 

 black mark at the base of the tail, with a smaller one above and 

 another below it. 



This pretty little Loach was kept upwards of a month in a vase 

 of water. When at rest it usually remained on the sand or rock- 

 work supported b}'' its two pectoral and its anal fins, its abdomen 

 not touching the ground. When frightened it burrowed under the 

 sand with great rapidity. It consumed animal or vegetable food 

 indifferently, and grew considerably whilst in confinement. 



8. Descriptions of some New Australian Freshwater Fishes, 

 By Gerard Krefft, F.L.S., C.M.Z.S., Cm'ator and 

 Secretary of the Australian Museum^ Sydney, N. S.W. 



Fam, Percid^. 

 MioNORUS, n. g. 



Seven branchiostegals ; all the teeth villiform, without canines ; 

 teetii on the vomer and on the palatine bones ; tongue smooth. Two 

 dorsals ; the first with six, the anal with two spines. The leaves of 

 the head without denticulation. Operculum without spines ; scales 

 moderate. 



