l^/"(j] "^^NATOMY OF CHAUNA DERDIANA. ] [) I 



narrow zonary belt of glands. It can. however, be seen that by far 



patch Ihe only birds with which I am acquainted in which the 

 P oventncular g^ds do not form a zone, or a./ approach to o , a e 

 Strutho and Bhea. In the Gallina. and Anseres they form a z;ne 

 1 e glandular surface occupies a subelliptical space, 2 inches by 

 g m Its long and short diameters, in tlie ipper and back part of 

 the cana , with the long axis in the direction of the tube ItsTower 

 end IS 2| inches from the upper orifice of the gizzard The Jand 

 tubes are simple, not racemose, and average | i?,ch in length ^ The 

 remainder ot the area of the proventriculu", about five ixtl of it is 

 covered with coarse and irregularly folded epithelium ' ' 



1 he gizzard is constructed on the usual type ; it is decidedlv 

 small in proportion to the size of the bird (iifthe Anseres it is al 

 conspicuously large), being much more elongate, narrow and ess 

 muscular than in grain-feeders. Longitudinal folds plicatl'th t- tT 

 rating surfaces, which are smooth in the Geese. Ducks, and Swan 



The spleen is the size of a haricot bean, and of much ^7^6 



shape Its position is in no way peculiar; but, as in aU birds bein' 



placed above the gizzard, it tends to confirm the op nil that th! 



atter organ is on y the representative of the pyloL end of 1 e 



prnticl.^^^''^^ ^°'"P°"^"^ "^ -^^^'^ ^^ re;.esented\;M;: 



The liver is composed of two simple rounded lobes united Iw „ 



narrow isthmus of hepatic tissue; the lobes are of nearlv enLl 



size ; and there is a fairly voluminous .all-bladder. ^ ''^""' 



Ihe tollowing table gives the intestinal lengths :— 



bmall intestine .. . 7 q ti in. 



-Large intestine 1 j q _ 



^«=<^« .'0.3 2 



The duodenum with its characteristic bend round the Dancre«, ;<. 

 more capacious than the rest of the small intestine but ^ti 

 large, being about i inch in diameter. The hepatic ;nd nan T 

 ducts enter it at the bend, 2| inches from the pyCus ^ "''''" 



Ihe pair ot caca present a condition unhke thafVnnr^ ,'„ 

 other bird with which I am acquainted In tLt fV •" ""^ 



some considerable distance from thcloac thev aSe"' ?""'''} 

 StrutMo and Rkea. In the much lSrCastlSTh:ilel' 

 testine is not more than / inches Ion? Tn hnth // », ,"' 



Tinamous. as well as in aU other bS, t A tffs tS' S,/^^ 

 mcluded, the large intestine does not Exceed 4 .hesfn t^ 

 Chauna^n having a large intestine, the length of which is several 



^^fj-inptrso-;:.?!-^^.^^^ 



