OCR Text |
Show 1882.] DR. GADOW ON THE ANATOMY OF PTEROCLES. 325 lower edges of both lobes have several slight emarginations ; and is a strong commissure between the lobes. The gall-bladder in m y specimen of Pterocles is large, forming a very distinct cylindrical'lateral pouch ; its cystic duct opened into the ascending end of the duodenal loop, whilst the hepatic duct was inserted opposite to the cystic duct, just below the pylorus. This arrangement of the ducts, however, seems to be subject to much variation ; for Prof. Brandt found that the cystic duct in Syrrhaptes either opened into the terminal part of the duodenal Duodenum of Pterocles arenarius, with the bile- and pancreatic ducts. loop, together with the hepatic duct, or in other cases near the pylorus, when the hepatic duct was inserted into the duodenum opposite the pylorus. (See figs. 5, 6, 7.) The pancreas in Pterocles and in Syrrhaptes opened by two ducts, one into that bile-duct which was inserted near the pylorus, the second just in front of the other bile-duct. The arrangement therefore was as follows:- Pterocles arenarius: d. hepatic 4- 1st d. pancreat. inserted near the pylorus. 2nd d. pancreat. -f d. cystic (see fig. 5) inserted opposite the pylorus. I. Syrrhaptes paradoxus : 1st d. pancreat. + d. cyst, inserted near the pylorus (fig. 6). 2nd d. pancreat. 4- d. hepat. inserted opposite the pylorus. |