No. 472] 



ANATOMY OF CRYPTOBRANCHUS 



31^ 



number of small veins from the region of the shoulder. The 

 innominate vein (In.) is formed by the union of the internal 

 jugular (/. J.) and the brachial (Br.). The main branch of the 

 former returns blood from the interior of the skull, and is joined 

 shortly before its union with the brachial, by two smaller vessels 

 (Cu.), leading from the side of the head. The brachial, as might 

 be expected from the small size of the fore leg, is a comparatively 

 small vein. This completes the description of the vessels con- 

 nected with the superior vena? cav8e,as the vessels of the two sides 

 of the body in this region are alike. 



The veins of the abdominal region will now be described. 

 Since these vessels are usually injected without difficulty, their 

 distribution may be made out with comparative ease. One of 

 the largest and most noticeable veins in the botly is the abdominal 

 (A.). It adheres closely to ventral body wall, slightly to the 

 right of the median line, and, unless care be taken, may ea>ily 

 be cut in opening the abdominal cavitv. In the diagram it, like 

 the veins from the stomach and intestines, is for the .sake of clear- 

 ness drawn towards the side. Posteriorly it is formed chiefly 

 by the union of the two iliac veins (//.), a union which takes place 

 just anterior to the cloaca iclo.). The iliac veins return the blood 

 from the posterior appendages, and, like the brachial veins, are 



point of union of the ilia<' veins th(> aixioniinal vein vereive.s a 

 very small vein (r.y.) from the urinary bla.l.lcr. Into the most 



the Hver, empty several (eight or nine) veins, the pari.taK li\ 

 which return blood from the ventral body wall. Anteriorly, the 

 alKlominal vein enters the liver, a little in frotu of the ajx'x. an. I 



the ventral surface of the liver for a considerable (lisTaiur in an 



The arrangement of the veins from the stonnich and inte>inie>, 

 the hepatic-jMrfal .s-i/sfcm, is rather peculiar, and will iww l)e 

 described. The bldod from practically the entire h n-th <.f the 

 intestines, both small and lar-e. i. eollecte.l Uy a ^v\u .1/.. 



xvhieh mav hr ..ilh-d ti.r ni.-entrri<-. A >h..rt di^tanr.- pn^UTior 

 to the Ynvv, tin. vein .mile, uith the .plenir ^r\u to torn, the 



