1882.] DR. GADOW ON THE ANATOMY OF PTEROCLES. 325 



lower edges of both lobes have several slight emarginations ; and there 

 is a strong commissure between the lobes. 



The gall-bladder in my 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 jiylorus. (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. 

 2ndd. pancreat. ■\- d. cystic (see fig. 5) in- 

 serted opposite the pylorus. 

 I. Syrrhaptes paradoxus : 1st d. pancreat. -f d. cyst, inserted near 



the pylorus (fig. 6). 

 2nd d. pancreat. -f d. hepat. inserted 

 opposite the pylorus. 



