296 J.D. OGILBY AND A. R. McCULLOCH. 
Paleichth. Fish. Austr. Mus., p. 7, 1888, Cape York, Q.5 
Waite, Rec. Austr. Mus., iii, p. 133, 1899; Regan, Proc. 
Zool. Soc., 1908, 11, p. 364. 
** Zebra Shark.”’ 
Body moderately robust, its depth 7°85 in the total length. 
Head much wider than deep, its width 1°10, its depth 1°40 
in its length, which is 1°75 in the trunk and 8°15 in the 
total length. Snout feebly declivous in front, linear and 
scarcely oblique behind, its length 1°55 in that of the head. 
Anterior angle of nostril one-third nearer to the mouth than 
to the middle of the snout; internasal space one-fifth wider 
than the mouth. Free nasal cirrus about as long as the 
diameter of the eye. Mouth one-fifth nearer to the tip of 
the snout than to the eye, its width 2°80, that between the 
outer angles of the labial grooves 2°00, the free space across 
the chin 4°15 in the length of the head. Space between 
eye and first gill-slit one-half of its distance from the tip 
of the snout, its longitudinal diameter 8°90 in the head. 
Interocular region convex, 1°20 in the head. Spiracle 
forming a suboval slit, nearly as wideastheeye. Branchial 
region 3°35 times the diameter of the eye; width of first 
gill-slit three-fifths more than the eye and one-fifth more 
than the last slit. Length of head and trunk 2°15 in that 
of the tail. First dorsal fin originating somewhat in 
advance of the ventral and not reaching quite so far back 
basally, its distance from the tip of the snout 3°90 in the 
total length; anterior border of fin sublinear; outer border 
and its angles forming an even and continuous convexity; 
hinder border emarginate, its length three-fourths more 
than the diameter of the eye and 2°80 in the base of the 
fin, which is seven-tenths more than its vertical height: 
second dorsal similar to but much smaller than the first, 
its distance from the origin of which is 4°35 in that from 
the tip of the caudal fin. Distance between origin of anal 
~<a 
