322 MR. R. II. BUBNE ON THE [Apr. 18, 



cava inferior. The vena cava lies to the right of the aoi'ta, and 

 enters the deep surface of the right lobe of the liver. Just 

 before leaving the anteiior border of the liver, it receives a large 

 hepatic vein. 



Two trunks of the hepatic portal system were noted, one 

 coming from the stomach and entering the liver at the anteidor 

 end of its left lobe, the other from the first part of the intestine 

 opening into the lower border of the same lobe. 



The Thyroid Body. 



The thyroid body has the normal position between the roots of 

 the carotid arteries ; it is supplied with blood by branches of the 

 subclavians. 



Organs of Respiration. 



The Larynx. — The larynx closely resembles that of CheXone. 

 The prociicoid cartilage is not, however, a completely separate 

 nodule, but forms a process of the anterior dorsal border of the 

 crico-thyroid. 



The iirst complete tracheal ring lies 7 cm. behind the anteiior 

 margin of the crico-thyroid cartilage. In front of it, inckided 

 within the crico-thyroid cartilage, there are six imperfect or 

 slightly indicated lings. These, as usual, are more marked and 

 extend further forwai'd on the venti'al surface than on the doisal. 



The constrictor and dilator laiyngis muscles are quite normal. 



The Trachea. — The lower end of the trachea is divided into 

 two lateral channels by a dorso-ventral partition for a distance 

 of 11 "5 cm. upwards from the bifurcation of the bronchi. This 

 has been accurately described by Rathke (Miiller's Arch. 1846, 

 p. 292). 



In this joart of the trachea the rings tend to be somewhat 

 irregular and frequently show partial duplication. 



Renal Organs. 



The kidneys are large and flattened doi'so-ventrally. Each 

 measures 23 cm. in length by 11 cm. in breadth at the hinder 

 end, and 6 cm. at the anterior end. 



Like the kidneys of other Rejatiles they are much lobulated, 

 the lobes having roughly the form of iiregular ti-ansverse bands, 

 which are themselves further subdivided by close convolutions. 



The ureters emerge from the hindei- part of the ventral sui-face 

 of each kidney between the main trunks of the afierent and 

 efferent renal veins, and from this point I'un directly backwards 

 to the lateral walls of the uro-genital sinus, into which they open 

 upon a pair of prominent papillae. The walls of the ureters are 

 thick and pigmented. 



