222 



NOTE ON A YOUNG MALE FROG, 



PAPERS READ. 



NOTE ON AN ABNORMAL CONNECTION OF THE 



RENAL-PORTALS IN A YOUNG MALE FROG 



(LIMNODYNASTES PERONII). 



By Jas. R Hill, F.L.S. 



In this specimen dissected in the Biological Laboratory, Sydney 

 University, the renal-portal of each side was in direct connection 

 with the post-caval. Each femoral vein divided in the usual way 



into pelvic and renal-portal 

 veins. The pelvics were ex- 

 ceedingly large, and united 

 in the normal way to form 

 the anterior abdominal. The 

 renal-portal of the right side 

 ,^ ^ (r.r.p. in tigure) was also very 

 — rft much enlarged. It passed 

 forwards, skirting the outer 

 dorsal border of the kidney, 

 but instead of dying away 

 anteriorly it was continued on 

 as a well-marked vessel which 

 passed round the anterior 

 border of the kidney and 

 became continuous with the 

 post-caval. No afferent renal 

 vessels could be made out 

 either in the fresh state or 

 after injection, and sections 

 of the kidney also failed to 

 reveal their presence. The renal-portal of the left side (l.r.p.) was 

 a much smaller vessel and more normal in appearance. It passed 

 along the outer border of the kidney of that side in the usual way, 



2?.c,, post-caval ; r.r.j). and 

 l.r.p., right and left renal-por- 

 tals ; l.a.r., left afferent renals ; 

 r.e.r. and Le.7\, right and left 

 efferent renals ; d.L, doi so-lum- 

 bar ; d. a. , dorsal aorta ; g. v. , 

 genital vein ; wr, , ureters. 



