1906.] 



ANATOMY OF THE OPHIDIA. 



17 



section of kidney along which it lies is possibly to be looked upon 

 as mesonephros, the incorporation of which with the metanephros 

 has perhaps caused the withering of the end of the tube, no longer 

 needed as a secretoiy conduit. 



Text-fig. 4. 



\.Cl 



/(■ 



Text-fig. 5. 



An/A^d 



Jn^ 



Text-fig. 4.— Kiduey and adjacent organs in newly-born Anaconda 

 {TSunectes notcBus). 

 a h. Gall-bladder; K. Kidney; M. Mesentery attaching oviduct to j««, mesonepbros ; 

 Ocl Oviduct ; F.c. Posterior cardinal vein arising- on kidney (?) ; Sr buprarenal 

 portal veins : 77. Ureter ; v.c.i. Vena cava posterior or renal efferent vein ; 

 Wd. Wolffian duct. 



Text-fig. 5.— Renal afferent vein of left side of body and its connections 

 in newly-born Anaconda {ISunectes notieus). 

 AntAhd Anterior abdominal veins; :P.B. Fat-bodies from one of which the right 

 anterior abdominal seems to arise; Jh*. Intestine; F. Parietal branches of 

 B.aff., renal afferent, which is seen to reach kidney anteriorly. 



Proc. Zool. Soc— 1906, Yol. I. No. 11. 2 



