BY W. MACLEAY, F.L.S. 411 



Genus Haplodactylus, Cuv. & Yal. 



In both jaws series of flat and generally tricuspid teeth, behind 

 which is a band of small cardiform teeth ; vomerine teeth. Cheeks 

 and opercles scaly. Two elongate dorsal fins ; anal short ; the 

 lower pectoral rays simple. Scales very small. Five or six 

 branchiostegals, pyloric appendages in small number. Air- 

 bladder simple. 



Southern Pacific. 



240. Haplodactylus arctidens, Eichards. 



Gunth. Oat. Fishes I., p. 335. 



D. 16. 1/18. A. 3/7. Ofec. pylor. 4. Vert. 16/18. ? 



Incisors lanceolate without distinct lobes in old age. Six simple 

 pectoral rays, Uniform brownish. 



Port Arthur, Tasmania. 



241. Haplodactylus lophodon, Gunth. 



B. 5. D. 17/20. A. 3/6. L. lat. 78. 



Each incisor with a terminal lobe and two lateral lobes on each 

 side. Six simple pectoral rays. Brown: operculum with a black 

 spot behind ; caudal and anal fins variegated with lighter. 



Coast of New South Wales. Port Jackson. 



242. Haplodactylus obscurus, Casteln. 

 Proc. Linn. Soc, N. S. Wales, Vol. III., p. 374. 

 Port Jackson. 



2. Molar lateral teeth m the jaws. Carnivorous. 



Genus Letheinus, Cuv. 



Cheeks naked. Cardiform teeth in front of the jaws with the 

 addition of canines, lateral teeth in a single series — conical, or 

 conical and molar-like, or obtuse molars. Scales moderate. Six 



