1906.] 



ANATOMY OP 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 secretory conduit. 



Text-fig. 4. 



Text-fiff. 5. 



^ \.u 



mm 



Fc 



K- 



An^AU 



-7"^ 



Text-fig. 4. — Kidney and adjacent orsans in newly-born Anaconda 

 (JSunectes notwus). 



(j.h. Gall-bladder; IC. Kidney; M. Mesentery attaching oviduct to j«», mesonephros ; 

 Od. Oviduct ; P.c. Posterior cardinal vein arising on kidney (?) : Sr. Suprarenal 

 portal veins : U. 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 (Eunectes noteeus), 



Ant.Ahd. Anterior abdominal veins ; J'.B. Fat-bodies from one of which the right 

 anterior abdominal seems to arise ; Int. Intestine ; P. Parietal branches of 

 R.ajf., renal afl'erent, which is seen to reach kiduej' auteriorlj% 



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



