205 
lower profile is more convex than the upper one. The snout 
is produced; the dorsal spine is rather slender, short, and 
straight ; it is contained once and one-fifth in the transverse 
diameter of the eye; it is inserted over the centre of the 
orbit, straight, or rather bent forwards, compressed, and quad- 
rangular, the edges being equidistant, and armed with rather 
short barbels, directed downwards ; there is no appearance of a 
short second ray. The second dorsal has thirty -four rays ; the 
anal twenty-seven ; the caudal is long, of twelve rays ; the pec- 
torals of thirteen ; no ventral spine ; the body is covered with 
very minute granulations, which become spinous on the tail. 
The four large anterior teeth are almost square. 
The upper parts of the body are of a dark green, and the lower 
ones white ; the whole is covered with very irregular black spots, 
particularly numerous on the sides; fins of a light greenish 
colour. 
I have only seen a single specimen in the month of May ; it 
was not quite three inches long. 
It is not impossible that this should be Balistes Sealer, 
Torster, {Bl. Sheen., p. 477) ; it evidently comes near Beronii, but 
its form is exactly like the one of Alutarius Baragaudatus, as 
represented by Richardson, “ Erebus and Terror, Fishes,” p. 66, 
pi. 39. {Spilomelanurus, Qu©y and Graim.) 
MOITACANTHTJS PEASINUS. 
This comes in the division characterised by — “ anal fin with 
less than forty rays ; the front ones much closer together than 
the hinder series,” which constitutes, for Dr. Sleeker, his genus 
Bseudomonacanthus ; the anterior profile is almost straight, the pos- 
terior one rather convex ; the lower profile is regularly arched, 
when the pubic bone is not extended ; the dorsal spine is inserted 
over the posterior third of the orbit ; it is arched, and carries very 
strong barbs directed downwards ; the back ones are much larger 
than the others ; this spine is twice and a quarter as long as the 
diameter of the orbit, and is very strong ; the inner ray is about one- 
third of the spine ; the second dorsal has thirty -five and the anal 
thirty -four rays ; the pectorals thirteen ; the ventral spine is fixed 
and formed of a small net of spinolets, three of which, on each side, 
are much larger than the others, and curved ; the height of the 
