. On the anatomy of vertebrates [electronic resource] . he urinary bladder, ib. M, m. Thisreceptacle is proportionally smallest in the marine Chelonia(Chelone, Trionyx): in its contracted state it presents, in , thick muscular parietes and a corrugated internal terrestrial and fresh-water Chelonia the bladder is relativelymuch larger, and with thinner walls. In many it is bifid. InEmydians, besides the ordinary bladder, fig. 304, u, a pair ofother bladders, ib. u, u, communicate by wide orifices, behindthe ureters, with the cloaca (p. 447). In the Crocodilia the kidneys
. On the anatomy of vertebrates [electronic resource] . he urinary bladder, ib. M, m. Thisreceptacle is proportionally smallest in the marine Chelonia(Chelone, Trionyx): in its contracted state it presents, in , thick muscular parietes and a corrugated internal terrestrial and fresh-water Chelonia the bladder is relativelymuch larger, and with thinner walls. In many it is bifid. InEmydians, besides the ordinary bladder, fig. 304, u, a pair ofother bladders, ib. u, u, communicate by wide orifices, behindthe ureters, with the cloaca (p. 447). In the Crocodilia the kidneys are of an oblong oval form; theforepart is thickest or largest, and is sternacl of the psoas muscle,the hind part extends into the side of the pelvis; they are incontact with each other at the mid-line. The surface is convo-luted, like the brain, but with smaller and more numerous gyrse ;the colour of the kidney is usually a deep brown. The uretersterminate in low papillae, in the urogenital compartment of the1 xx. vol. iii. p. 221, prep. no. 1820 Male organs of generation, and kidney of Emyseurop&a. xxxrm. 542 ANATOMY OF VERTEBRATES. cloaca behind the genital orifices; the forepart of the cloacais slightly dilated, and the rectum opens therein by a valvularprotrusion. The formation and disposition of the reniportal and renal oremulgent veins have been previously described. § 97. Adrenals of Hazmatocrya.—The bodies called (suprarenalcapsules/ frenes succenturiataB,(capsular atrabiliarise, &c, in Man,may be represented in the lowest Vertebrates, e. g. the Myxinoids,in the form of a pair of small oval lobulated bodies situated inadvance of the kidneys, and close or adherent to the portal the lamprey a glandular body lies between the aorta and car-dinal vein, adhering to the coats of the latter ; but it has not thecharacteristic structure of the adrenals in higher Vertebrates. Inordinary Osseous Fishes the adrenals have been recognised asroundish bodies of a light
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