18f»l.] DR. A. GiiNTIlKR ON THE ANATOMY OF RKGENIA. 01 



8 lines broad. The length of the small intestine is 29 inches, that 

 of the rectum, with the ca3cum and cloaca, 3 inches. 



The liver is large, divided by a comparatively small notch into a 

 right and left lobe, the former being somewhat the larger. The 

 gall- bladder is imbedded in an excavation of the substance of the 

 liver, which penetrates to its parietal surface. The heart is received 

 into the upper end of the groove which separates the two lobes of 

 the liver, the pericardium being fixed to the ligamentum suspenso- 

 rium. The conus arteriosus is well developed, and emits the art. 

 pulmonalis, whilst a truncus arteriosus arises from the ventricle. 



The trachea has the cartilaginous rings not closed on the dorsal 

 side, and is divided into the two bronchi at some distance from their 

 entrance into the lungs : they penetrate so far into the substance of 

 the lungs, that they nearly reach their posterior extremity ; and the 

 length of each bronchus is equal to that of the undivided trachea : 

 each bronchus opens by several lateral foramina, but emits only one 

 short branch, which, again, is provided with incomplete cartilaginous 

 rings. The lungs of both sides are nearly equally developed, and of 

 moderate capacity ; their interior is amply provided with cells and 

 meshes, even in their posterior extremity. 



The kidneys are of an elongate, pear-shaped form, entirely sepa- 

 rated from each other, and of equal size. Each is formed by eight 

 larger and some smaller lobes, which are united only at the base, 

 the former making several convolutions. The ureters end in two 

 small papillae at the extremity of a large separate sac on the dorsal 

 side of the rectum. As the urine is not received in this sac, but in 

 the hindmost portion of the intestinal tract, we cannot consider it 

 as a urinary bladder, although Cuvier describes such an organ in 

 Iguana and Tupinambis. The secretion is, as usual, of a firm, chalk- 

 like appearance. 



The ovaria are equally developed on both sides ; both exhibit the 

 same degree of disease in the present specimen. The oviducts are 

 of moderate width, and convoluted like the intestines ; their ostium 

 abdominale is wide, sitviated above the ovarium, and not fringed. 

 The orificium uterinum is exceedingly narrow, on the tip of a large 

 papilla which projects into the upper part of the sac mentioned. 

 This sac is situated on the dorsal side of the rectum, and appears 

 to belong exclusively to the generative organs. 



Fatty masses are found in a great many reptiles, as, for instance, 

 the corpora adiposa in the abdominal cavity of the Batrachians, or 

 on each side of the abdomen oi Iguana *. Owen considers them as 

 reservoirs of nutritious matter which is resorbed during the time of 

 the torpid state, into which at least the former of those animals fall. 

 In none, however, are those corpora adiposa so developed as in Re- 

 genia ocellata. They completely fill each side of the iliac region, 

 and evidently give the broad, bulky appearance to the animal ; they 

 are contained in a separate sac of the peritoneum, and provided with 

 numerous blood-vessels. Their greatest length is 7 inches, their 

 greatest width 6 in., and their thickness in the middle l^in. ; in 

 weight they equal the fifth fart of the weight of the entire animal. 

 * Owen, Catal. Coll. of Surg. 



