ANSER LEUCOPSIS. 323 



The Canada Goose \_Anser canadensis, Briss.]. 



This has a strong gizzard ; the duodenum is as usual. The jejunum 

 makes a fold like the duodenum, which is turned in upon itself ; then 

 the remaining part of the jejunum and the whole of the ileum make 

 three folds upon themselves, when the latter passes into the rectum. 

 The two caeca are somewhat longer than the last fold made by the 

 ileum, and are a little serpentine. The rectum is as usual : there is no 

 cavity above the ants. The liver is but small. There are a ductus 

 hepaticus and a ductus cystieus, which enter the duodenum at its third 

 turn close by one another. The bile is very thick. The pancreas is 

 divided into two, as usual: the duct enters just by the duct of the 

 liver. The clitoris is a small point, just in the place of the penis. 



The Bkent Goose [Anser Bernicla, Cuv.] . 



It has no crop ; but has a gizzard like that of a swan. The duo- 

 denum is as usual. The ducts of the liver enter at the last turn, and 

 the pancreatic duct just by them. The pancreas is not so long as the 

 fold of the duodenum. The small intestines are folded upon one 

 another in parallel folds, about 5 inches long ; and in the direction of 

 the body of the bird, there are two caeca which are attached to that 

 part of the ileum which makes the last fold, so that they seem to 

 make up part of the fold : they are somewhat longer than the folds, and 

 are a little serpentine at their ends. 



There is a difference between the viscera of this bird and those of a 

 swan ; but the male parts of generation are just the same as those of 

 the swan. 



The Barnacle Goose [Anser leucopsis, Cuv.] . 



In a water-fowl, about as large as a Moscovy duck, that had a black 

 short bill, thick at the root like a goose, which was white headed, with 

 a large black spot upon the top of the head, and a black neck, I found 

 the glandular part of the oesophagus filled with grass. The stomach 

 was like that of a swan, very strong, and filled with small stones; 

 there was a muscular bulge on its convexity opposite to the insertion of 

 the oesophagus. The duodenum was as usual: the other intestines 

 were as in the swan ; that is, they were folded upon one another in 

 two parcels, in folds like that of the duodenum. They were larger 

 than common for a bird of that size, and were filled with a kind of 

 mashed hay, mixed with other kind of stuff, like horse's dung ; and 

 that which was in the duodenum was like small pieces of hay, mixed 

 with whitish juice. 



