Dr. LATHAM’s Effay on the Trachea or Windpipes of Birds. 107 
X, ARDEA GRUS—The Crane. Tab. xii. Figv 4. 
A. occipite nudo \pahillogs; pileo remigibufque nigtis, corpore 
- cinereo, teétricibus intimis laceris. 
‘Ardea Grus, Linn. Syft. Nat. i. p. 234.—Ind. Orn. 2. p. 624.—Rait 
Syn. Av. p. 95. A. 1.—Will. Orn. p. 294. t. 48. 
La Grue, Buf. O//. vii. p. 287. fol. 14.—P/. Enl. 769. 
Der Kranich, Be/ch. der Berl. Nat. Fr. iv. P- 586. t. Xvi. 
The Crane, Gen. Syn. v. p. 50.—Br. Zool. ii. App. p. 629. pl. 6 
Phil, Tranf. \vi. p. 208. t. 11. f. 4. 
ty In this bird the ¢rachea enters the keel of the fternum in like 
manner as in the Wild Swan; with this difference, that it is doubly 
reflected*, as may be feen by confulting the figure. As inthe Wild 
Swan, fo in the Crane, we find that both fexes have the fame coh- 
formation of parts, excepting that, in refpeét to the Crane, the tra- 
chea in the female does not pafs near fo far into the keel of it as in 
the male, nor is the doubling nearly fo confiderable. 
WE now pafs to birds in which the trachea enlarges in various 
parts, efpecially juft at the angle of divarication, where it goes to 
the lungs; and which laft circumftance, for want of a better name, 
authors have agreed to call by the name of Ampulla, or Labyrinth, 
"as before obferved, pQ6, Gn 
* To ufe the expreflion of Dr. Parfons, ‘* This may be compared to a French-horn, 
. “ whereas that of the Wild Swan is ftraight within the bone, and may be compared toa 
“Trumpet; yet the entrance of this into the fternum and its exit, and its paflage into the 
‘ cavity of the thorax, are fimilar to thofe of the Wild Swan.” See Phil. Tranf- 1. c. 
P2 XI. ANAS 
