214 
internally. Embryo with clecidnous external gills. 
Males with prehensile organs attached to the ven- 
tral fins.” 
Order I. HOLOOEPHALA. 
“ One external gill-opening only, covered by a 
fold of the skin, which encloses a rudimentary car- 
tilao-inous a;ill-cover: four branchial clefts within 
the gill-cavity. The maxillary and palatal appa- 
ratus coalescent with the skull.” 
“Form of the body elongate; pectoral fins free; 
anterior dorsal fin above the pectorals. Mouth in- 
ferior. Dental organs confluent into two pairs of 
laminee in the upper jaw and into one pair in the 
lower. No spiracles. Males with a peculiar pre- 
hensile organ in the upper part of the snout. Skin 
naked in the adult.” 
CALLOEHYNCHTJS. 
Formed by G-ronovius on a most curious fisb, whose rounded 
bead bas a snout ended in a cutaneous flap. 
CAIiLOEHXXCHUS AHTAECTICUS. 
Chimsera Callorbyncbus, Lm. Syst. Nat., vol. i., p. 402. 
Callorbyncbus Antarcticus, Cuv., Beg. Anim., vol. ii., p. 372. 
Callorbyncbus Tasmanius, Bichard., Trans. Zool. Society, 
vol. iii., p. 696. 
{Southern Chimera?) 
This singular flsb is common at tbe Cape of Good Hope, 
but appears very scarce in tbe Victorian sea, as I have only 
