1417 
Genus Xystodus Ogilby 
Xystodus OGILBY. Proc. Royal Soc. Queensland, vol. 23, 
Nov. 7, 1910, p. 5. Type Xystodus banfleldl OGILBY, 
monotyplc. 
Body depressed, slender, little wider than deep. Head 
moderate. Eye rather small, adipose lids vestigeal. Teeth 
In jaws unequal, uniserial, long compressed widely separated 
sagittate fangs and between each pair 1 or 2 much shorter 
obtusely pointed ones; palatine teeth similar, acicular, bl- 
serial, form long narrow band; 2 strong series on hyoid; multi- 
serial patch anteriorly on tongue. Nostrils well separated, 
anterior circular and cirrigerous, posterior oblique slit 
t 
below level of anterior. Frontal groove smooth in front, pro¬ 
fusely pierced by small pores behind, continuous with occipital 
groove. Scales present. No lateral line. Dorsal origin mid¬ 
way between snout tip and caudal base. No adipose fin. Anal 
longer than dorsal, similar. Pectorals small, rounded. 
Ventrals with 8 rays. Vent much nearer ventral than anal. 
One species. 
