Archive image from page 45 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0402todd Year: 1849 830 SUPRA-RENAL CAPSULES. vertebral arch : this occurs in the genera Cyprinus, Tinea, Pleuronectes, Anarrhichas, Scomber. Or they occupy more the middle of the kidney, as in the Salmo Salar. On the other hand, they are found on its abdominal surface in the Eel and Pike. They lie in this situation very anteriorly, occupying, in the Eel, the place where the two crura of the renal mass unite. In the Pike they are yet more advanced forwards, so that they coaie to
Archive image from page 45 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0402todd Year: 1849 830 SUPRA-RENAL CAPSULES. vertebral arch : this occurs in the genera Cyprinus, Tinea, Pleuronectes, Anarrhichas, Scomber. Or they occupy more the middle of the kidney, as in the Salmo Salar. On the other hand, they are found on its abdominal surface in the Eel and Pike. They lie in this situation very anteriorly, occupying, in the Eel, the place where the two crura of the renal mass unite. In the Pike they are yet more advanced forwards, so that they coaie to lie in the middle point of the length of the body. Amongst the cartilaginous fishes, the supra- renal capsules seem in the Squalidoe to be only present as a single mass. This, in the shape of a small ochre-yellow stripe, oc- cupies the dorsal surface of the kidneys. But in the Rays the supra-renal organs form a curved cylinder, which is constricted at two points, and lies on the ureters; at least Retzins formerly stated this to be its condi- tion. Stannins sometimes found in this genus a similar elongated body behind the kidneys : or, in other instances, four or five small glan- dular corpuscles were present in its place. And the latter observer found that the supra- renal glands of the Sturgeon consisted of similar corpuscles in much larger number. The supra-renal capsules of the cartila- ginous fishes have a yellow colour, and are also plainly lobulated. As has'been previously remarked, in the least developed fishes the supra-renal cap- sules have not been discovered, at least not with any certainty, so that their existence must remain a matter of doubt. In the Myxinaid fishes, J. Miillerf found behind the gills, and on each side of the cardia, a clus- tered gland which was devoid of an excretory duct. He interprets it as a supra-renal organ; and regards as analogous to it the white specks with which the trunks of the posterior veins of the body are beset in the Ammo- cae
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