352 MR. F. E. EEDDARD OX THE [Feb. 16, 



fourth renal arteries, on the other hand, both give branches to 

 the oviduct. I should add that in this kidney, as in the opposite 

 one, there is a longitudinal system running along the ureter as 

 well as along its inner border. 



In the male, the first renal artery arises just in front of the 

 second spermatic artery and just below the inferior mesenteric ; 

 the second artery of the anterior kidney arises next. Then follows 

 the first artery of the posterior kidney, which gives off a stout 

 branch supplying (I think) the fat-body. Each kidney has in all 

 five arteries. 



COROXELLA GETULA. 



The anterior vertehrcd artery is extensive in this species and 

 does not plunge into the parietes until farther than halfway up 

 the neck. Exactly at its point of origin fi'om the aortic arch, 

 where naturally an angle is formed — in fact, exactly bisecting 

 the angle in its line of direction, — arises the first of the inter- 

 costal branches of the vex'tebral. The lymph-tube surrounding 



Text-fiff. 70. 



Zamenis flagelliformis. 



Origin of right aorta and other arteries, to illustrate mode of enclosure 

 within Ij'niphatic sheath. 



L.Ao., left aorta ; B.Ao., right aorta ; X, lymphatic vessel not containing 

 an artery, 



the artery here dilates into a sac, which completely envelops 

 the intercostal artery in question. The strvTcture is rather 

 difierent from that seen in an example of Zamenis flagelli- 

 formis. In the latter there is a dilatation at the junction of the 



