16 MARY L. WALKER ON THE FORM OF 
jugal cup is deep, with raised margins, and is placed close to the postero-inferior 
angle of the bone. 
Fig. 29. Rattus aQuaticus. 
In the Crane and the Rail the anterior mandibular condyle is produced on its 
external side into a broad flat accessory trochlea, precisely like that of the Stork. 
The Bustard differs from the other two in the absence of this trochlear surface, as 
Fig. 30. OTIS TARDA. 
well as in the somewhat wider separation of the capitula. These characters scarcely 
indicate an affinity on the part of Otis to the Charadriomorphe rather than to the 
Gruide, as Firprincer suggests; but, on the other hand, the unmistakable 
likeness of the Crane’s quadrate to that of the Stork adds another to the long list of 
characters summed up by Firpriverr, in which Grus resembles the Pelargo-Herodii 
(loc. cit., II. 1205). 
V.—ALEcCTOROMORPHA (excluding Pterocles). 
The quadrates of the Fowl and the Turkey are very similar. We have chosen 
the larger species for representation. 
Fig. 31. Mr racris GALLOPAVO. 
