RECORDS OF IV. A. MUSEUM. 
[83 
SYNGNATHUS (YOZIA) TIGRIS, Castelnau. 
Plate, XI. ; Fig. 2. 
Syngnathus tigris, Castelnau — Proc. Linn. Soc. N. S. Wales, III , 1879, p. 397 : 
Id., Macleay, loc. cit., VI., 1881, p. 227; Id. Stead, loc. cii., XXXI., igo6, 
p. 428; Id., Duncker, Faun. Siidwest-Austr. II., igog, p. 245 
D. 24-25. P. 15. C. 8. Rings 17 + 36. Head in the 
trunk. Head and trunk if in tail. Snout if- if in rest of head. 
Eye 2f-2-| in snout, and 2 in postorbital portion of head. 
Snout rugose but not serrated, with a median keel before the 
eyes which is more or less bifurcate between the eyes. Interorbital 
.space concave. Head granular, operculum with radiating lines, 
but without a median keel. Occiput and nape with a sharp, raised 
keel ; body rings without spines. Trunk deeper than broad, the 
breast more or less swollen ; depth between the upper and lower 
lateral edges of the trunk rather less than the length of the snout. 
Dorsal fin opposite the vent, occupying 2f-3 + 2-2l rings, its base 
elevated. Median lateral ridge continuous with the lower caudal 
edge; upper edge extending over i-i| body rings. Lower surface 
of the tail much broader than the upper. Caudal fin, large, two- 
thirds as long as the snout. 
Colours. — Light brown in spirits, each ring with a more or 
less distinct ocellus above the lateral ridge, and on the sides of the 
tail ; a dark-edged, semioval pearly spot on the edge of each body 
segment. Operculum with several oblique dark lines. Body with 
three darker cross bars, and tail with about seven more. 
Described from three specimens 265-280111111. long, from Port 
Jackson, the largest of which is the specimen figured (Reg. No. i. 
12073). 
A single specimen from Fremantle differs only in having the 
head more rugose, the opercular markings broader, and nine instead 
of seven cross bands on the tail. 
According to Castelnau, the upper edge on the tail and the 
lateral line are continuous, but in all the specimens I have seen, 
the latter joins the lower edge above the vent. Through the kind- 
ness of Mr. Stead, I have examined the specimen he recorded from 
