| Inches | |
|---|---|
| Length of œsophagus, proventriculus included | 2½ |
| of gizzard | ⁶⁄₈ |
| Breadth of ditto | ½ |
| Length of intestinal canal from gizzard to the cloaca | 7½ |
| from cæca to cloaca | ⅞ |
Skeleton similar in form to that of Furnarius cunicularius.
| lines | |
|---|---|
| Length of sternum | 11¾ |
| Breadth anteriorly | 5¼ |
| posteriorly | 7½ |
| Depth of keel | 3¾ |
| of fissures | 5 |
| Breadth of ditto | 1½ |
| Length of pelvis | 12²⁄₄ |
| Breadth anteriorly | 4 |
| posteriorly | 9¾ |
| Length from occiput to point of bill | 17 |
| Breadth of cranium | 7 |
| Length of coracoids | 8½ |
| No. of cervical vertebræ | 11 |
| dorsal ditto | 7 |
| sacral ditto | 11 |
| caudal ditto | 7 |
| Total | 36 |
| No. of true ribs | 5 |
| false ditto | 2·1 |
| Total | 8 |
OPETIORHYNCHUS ANTARCTICUS. G. R. Gray. (Male.)
Structure of the soft parts as in O. vulgaris, but with the rectum of rather larger diameter, and the cæca very minute; gizzard filled with the remains of insects.
| Inches | |
|---|---|
| Length of œsophagus, including proventriculus | 2¼ |
| gizzard | ⁶⁄₈ |
| Breadth of gizzard | ½ |
| Length of intestinal canal from gizzard to cloaca | 7 |
Skeleton similar in form to Furnarius cunicularius, and the other species of this genus.
| lines | |
|---|---|
| Length of sternum | 11 |
| Breadth anteriorly | 6 |
| posteriorly | 7½ |
| Depth of keel | 4¾ |
| of fissures | 4 |
| Breadth of ditto | 1¾ |
| Length of pelvis | 12 |
| Breadth anteriorly | 3¾ |
| posteriorly | 10½ |
| Length from occiput to point of bill | 18 |
| Breadth of cranium | 7½ |
| Length of coracoids | 9 |
| No. of cervical vertebræ | 11 |
| dorsal ditto | 7 |
| sacral ditto | 12 |
| caudal ditto | 7 |
| Total | 37 |
| No. of true ribs | 5 |
| false ditto | 2·1 |
| Total | 8 |
OPETIORHYNCHUS PATAGONICUS. G. R. Gray. (Male.)
No difference in the structure of the soft parts from the other species of the genus before spoken of. The trachea, however, does not differ from the ordinary simple form found in most birds, but differs from O. vulgaris and O. antarcticus, in having the lower rings continued to the bronchiæ it is acted upon by one pair of muscles; no cæca are apparent.