184 
PACIFIC SCIENCE, Vol. XVIII, April 1964 
Fig. 10. Diplospinus multistriatus 17.4 mm in standard length. 
spines and the post-temporal and pterotic spines 
are likewise little changed. A single low spine, 
actually little more than a crest, occurs above 
each eye. The upper of the two tusks on the 
dentary is much the larger, and the upright tooth 
posterior to the tusks equals it in size. About 
15 curved teeth, some occurring as pairs, occupy 
the length of the dentary. Anteriorly the pre- 
maxillary has 3 or 4 greatly enlarged fangs, the 
anterior 1 or 2 about half the size of the others. 
Behind the fangs is a row of about 10 short 
teeth similar to those of the dentary. The vomer 
still has 2 teeth near each posterior tip, and 
these are attached on the inner surface of the 
bone rather than to its crown. Each palatine 
bears 6-8 short denticles. There are 3 + 1 + 11 
long, slender gill-rakers on the first arch. The 
nasal capsule has 2 openings, an oval anterior 
nostril and an irregular posterior one. The nos- 
trils must form suddenly, for they are not pres- 
ent in a 16.5-mm specimen. Small patches of 
cartilage surmount the tips of both jaws, where 
they appear to do nothing more than smooth 
over irregularities in the bones. 
Large melanophores occur on top of the head, 
but give way to smaller ones which extend in a 
narrow line from the occiput along the entire 
base of the spinous dorsal. Dark pigment over- 
lies the nasal capsule and occurs as a ring around 
the orbit. The maxillary, posterior dentary, and 
pre-pelvic and branchiostegal regions are also 
dusky, and there is a dark spot in the spinous 
dorsal fin membranes. (These membranes are 
damaged in the 17.4-mm fish and the spot is 
drawn as it appears in a 16.5-mm specimen.) 
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Fraser-Brunner, A. 1950. The fishes of the 
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