OCR Text |
Show 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 secretory conduit. Text-fig. 4. Text-fig. 5. Text-fig. 4.-Kidney and adjacent organs in newly-born Anaconda (Eunectes notceus). g.b. Gall-bladder; K. Kidney; 31. Mesentery attaching oviduct to mn, 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 notceus). Ant.Abd. Anterior abdominal veins; F.B. Fat-bodies from one of which the right anterior abdominal seems to arise; Int. Intestine; P. Parietal branches of B.aff., renal afferent, which is seen to reach kidney anteriorly. PROC. ZOOL. Soc-1906, VOL. I. No. II. 2 |