136 
Since writing the foregoing I have referred to Dr. Bashford Dean’s 
magnificent work “On the Embryology of Bdellostoma stouti,* with 
a copy of which I have been kindly favoured by the author. Of the 
American hagfishes Dr. Dean says that when placed in pails they 
exhibit constant movements, writhing from top to bottom, some- 
times lifting their nostrils out of water, but he has never seen the 
tongue everted naturally. I am fortunate, therefore, in having re- 
peatedly witnessed this action on the part of the New Zealand blind- 
eel. In order to show more clearly the precise nature of the scar 
left by the teeth, I furnish a photograph of one natural size (pl. xiii, 
fig. 3), from the creature figured in full, on the skin of which several 
such scars will be noticed. 
SELACHiI. 
Family SCYLIORHINID.. 
CEPHALOSCYLLIUM, Gill, 1861. 
Cephaloscyllium laticeps Duméril. 
CARPET-SHARK. 
Plate XIV, fig. 1, and XXI, fig. 1. 
Scyllium laticeps Duméril, Rev. et Mag. Zool. 1853, p. 84, pl. 1, fig. 2. 
Cephaloscyllium laticeps Gill, Ann. Lyc. Nat. Hist. New York, vii, 
1861, p. 412; Hutton, Index Faune N.Z., 1904, p. 54. 
Stations 22, 23, 26, 27, 28, 30 (egg), 36, 37, 89, 90, 93, 94, 95, 96. 
aes 
Head extremely broad and depressed, its breadth equal to its 
length, which is 5°6 in the total. Interocular breadth half the width 
of the head, eyes on upper surface but directed laterally. Spiracle 
rather large, behind and below the eye. The gill-slits regularly de- 
crease in size; the two last are situated over the base of the pectoral. 
Snout short, rounded, its margins sinuous. Mouth very large, with- 
out distinct labial fold. Teeth similar in both jaws, small, with broad 
base and three cusps, the lateral ones small; about six series of teeth 
in use, seventy rows in the upper and sixty in the lower jaw. Nos- 
trils close to the margin of the snout, and widely separated ; in addi- 
tion to the usual anterior valve, the posterior margin is also pro- 
vided with a lobe of skin. 
The first dorsal fin arises a little behind the middle of the length 
and above the middle of the ventrals. The anterior and posterior 
. insertion of the second dorsal is behind the corresponding situation 
of the anal respectively. The second dorsal is smaller than either 
the first dorsal or the anal. 
* Dean, Festschrift C. V. Kupffer, 1899, p. 224. 
