BY W. MACLEAY, F.L.S. 137 



length of the liead somewhat less than one-sixth. Jaws equal in 

 length anteriorly ; nasal tube not prolonged ; eyes contiguous, 

 each with a small tentacle. The upper rays of the right pectoral 

 are prolonged, two-thirds of the length of the head ; the left 

 pectoral is very short, but rather broad. The gill-membranes 

 are dilated on both sides and annexed to the pectorals. Yellowish, 

 with eleven brown cross-bands, broader than the interspaces : 

 only the anterior bands are more or less geminate : the first across 

 the snout, the second behind the eyes, the third across the gill- 

 opening, the last separated by a white band from the caudal. 

 Caudal blackish-brown, with a pair of black ocellated spots, edged 

 with white, on its posterior half. 



Sydney, Brisbane, and Swan Paver (Castelnau). 



797. Synaptura sclerolepis, Macl. 

 Proc. Linn. Soc. N.S. Wales, Vol. II., p. 363 pi. 10, fig. 4. 

 Port Darwin. 



798. Synaptura nigra, Macl. 



Proc. Linn. Soc. N.S. Wales, Vol. V., p. 49. 

 Botany Bay. 



Genus Plagusia, Cuv. 



Eyes on the left side ; pectorals none ; vertical fins conilucnt. 

 Scales small, ctenoid ; lateral line on the left side double or treble. 

 Upper part of the snout produced backwards into a long hook, 

 covering the mandible ; mouth unsymmetrical, rather narrow ; 

 lips of the coloured side with tentacles ; teeth minute, on the 

 right side only. One nostril on the left side, before the angle of 

 the lower orbit; none between the eyes. Gill-opening very narrow. 



Indian and Australian Seas. 



799. Plagusia guttata, Macl. 



Proc. Linn. Soc. N.S. Wales, Vol. II., p. 362, pi. 10, fig. 3. 

 Port Darwin, Endeavour Paver. 



