Deep Water off the Coast of Natal. 415 
A. plicatellus, Gilbert, from Hawaii, is much nearer to 
A. nata/ensis, but appears to differ in the shorter pelvic fins 
(2 length of head), shorter snout, and wider interorbital region 
(each a little more than 4 length of head). Also the lips are 
said to be finely plicate and the lower jaw to have a spine at 
the angle. 
A. japonicus, Schleg., from Japan, has teeth in the lower 
jaw (in the specimen, 240 mm. long, in the British Museum) ; 
distance from snout to origin of dorsal 4, to origin of anal 2, 
of total length ; snout } head, ete. 
Celorhynchus denticulatus, sp. n. 
Head as long as distance from isthmus to vent. Snout 
acutely pointed, with slightly convex edges, 13 diameter of 
eye, which is 4 in length of head; interorbital width 32 in 
length of head. Mouth rather large, its width rather more 
than 4 width of head; length of upper jaw a little shorter 
than snout; maxillary ending below posterior 4 of eye ; 
barbel nearly as long as eye. Scales with spinules arranged 
in 10 to 16 parallel series; 4 scales between dorsal fin and 
lateral line. First dorsal 1l-rayed; base a little less than 
distance from second dorsal. Pectoral 4 length of head ; 
pelvics 7-rayed, as long as eye. Coloration uniform. 
A single specimen, 270 mm. in total length. 
Acropoma cynodon, sp. n. 
Depth of body nearly 4 in length, length of head 23. 
Snout a little shorter than diameter of eye, which is 34 in 
length of head ; interorbital region flattish, its width 44 
in head. Lower jaw strongly projecting ; maxillary with a 
narrow supplemental bone, ending below middle of eye. 
None of the teeth depressible ; upper jaw with a narrow band 
of small villiform teeth and a pair of strong anterior canines 
set well apart; teeth in lower jaw all pointing backwards, 
uniserial, stronger at the sides than in front, except for a 
pair of symphysial canines; small teeth on vomer and a single 
series on palatines. Przeorbital narrow; scaly part of cheek 
longer than deep. Praoperculum thin, rounded, with serrated 
edge; operculum with 2 points. Gill-membranes separate ; 
7 branehiostegals. Gill-rakers long, 16 on lower part of 
anterior arch. 2 dorsals, almost continuous, with 1X, I 10 
rays ; spines slender ; third at least as long as eye, first and 
ninth } as long; soft fin highest anteriorly. Anal [II 7; 
