1895.] 



AlfATOMT or CHATTN^A CH.iTABIA. 



351 



pointed out, similar to that of the Ostrich ; but in the Ostrich the 

 zone is not complete above, and the proventriculus is unsymme- 

 trical in shape. The small gizzard of Cliauna cliavaria exhibited 

 a strongly marked central tendinous area on each of the opposite 

 faces, very dissimilar from the double tendinous area found on each 

 of the similar areas in the Ostrich and Groose. 



tia' /ra/- ctei 



Intestine of Chauna chavaria. 



s. Proventriculus with g the glandular patch. 



d. Duodenum enclosing the pancreas (the duodenum has been turned for- 

 wards). 



I to I. The large loop of the intestine, with y tlie yolk-sac diverticulum about 

 the middle of its length. This coil has also been raised up and turned 

 forwards. The remains of the ventral mesenterj- running from the 

 diverticulum are not shown, as they lie under the intestinal loop. 



c c. The creca. Li. Large intestine. 



r.v. Rectal mesenteric vein. This dips under the mesentery of the large loop, 

 where its course is shown by a dotted line. It there joins with the large 

 central vein of the large loop and with the veins from the duodenum and 

 caeca, and the blood passes forwards, its course being shown by a dotted 

 line, to the portal vein p.v. 



In the accompanying figure I show the arrangement of the coils 



