348 
POPULAR SCIENCE REVIEW. 
DESCRIPTION OF PLATE CXIII 
All the figures have been selected and drawn by the author from plates illustrating 
M. Du Fosse’s article in the “ Annales des Sciences Naturelles.” 
Fig. 1. View of the upper surface of the front part of the body of the 
Mailed Gurnard, or “ Malarmat ” (Trigla cataphracta) . A large 
portion of the skull and of the front part of the spine has been re- 
moved ; also all the “ great lateral ” muscles, both superficial and 
deep, at the interior end of the body, and, on the left side, all the 
layers of muscles, and the ribs as far as the dorsal arch of the 
abdomen. A portion of the membrane lining the abdomen is 
retained, to which are attached the “ infracostal ” muscle. The 
whole of the posterior half of this muscle has been separated 
from its attachments and reflected, in order to demonstrate 
more readily the course which the entire muscle describes. 
I o. Left gill -cover, or “ operculum.” o l. Olfactory lobe of 
brain, o p. Optic lobe, c l. Cerebral lobe, c b. Cerebellum. 
m o. Medulla oblongata, or first part of spinal cord. a. Two 
cerebral nerves belonging to the fifth pair. The three roots 
(of which only two are represented in the plate) of the nerve 
destined for the “ infracostal ” muscle, and the ganglion de- 
veloped upon them outside the vertebral column. On dissect- 
ing this ganglion, it is found that the nerve despatched 
to the muscle is a continuation of the largest — the 
most anterior, of the three roots, y. The nerve of the 
“ intracostal ” muscle after its emergence from the ganglion. 
d. Two nerves arising from the ganglion, on their way to the 
II operculum ” and neighbouring parts, t . Three rootlets of the 
cerebral nerve of the eighth pair. h. A portion of the u hu- 
meral ” bone (Cuvier) — probably one of the “ clavicular ” bones 
of more modern nomenclature, a little separated from the 
“ operculum.” i m. Left “ intracostal ” muscle, the posterior 
flattened portion of which has been reflected. Its extremity, 
which is pointed, could not be represented. 1 l. The “ great 
lateral ” muscles, superficial and deep, of the left side, seen in 
section, amongst which the ribs are visible, also in section. 
e, e. Eyes. B. Air-bladder. 
Fig. 2. The air-bladder of a Sapphirine Gurnard, “Perl on,” ( Triglahirundo). 
It is seen from its lower aspect, and is distended by a greater 
quantity of gas than it would normally contain, m. Principal 
lobe, ra, la. Right and left appendicular lobes respectively. 
Fig. 3. The same — also from the inferior aspect — opened by a crucial 
incision ; the four triangular flaps resulting from which are 
reflected over the appendicular lobes (ra, la). A, P. Cavity of 
the principal lobe separated by the diaphragm ( d ) into two 
divisions — the anterior (A) and posterior (P) chambers, d. The 
“ diaphragm ” (Duvernoy) lying obliquely from before back- 
wards and from above downwards, s indicating its anterior 
