10 MARY L. WALKER ON THE FORM OF 
mentary. The pterygoid condyle is very faintly marked. The quadrato-jugal cup 
is small, deep, and raised. The posterior part of the articular surface is narrow, 
transversely elongated, and flattened ; the anterior is elongated from before back- 
wards, and is bevelled off externally into an accessory trochlea. 
The quadrate of Dacelo is surprisingly different from that of Alcedo, in respect 
of its large anterior process, otherwise the two are not so different as owing to this 
fact they at first sight appear. The two capitula in Dacelo are slightly separate, 
and the external one is hollowed out. The quadrato-jugal cup is small and deep. 
The pterygoid condyle is more distinct than in Alcedo, but yet is imperfectly severed 
from the mass of bone below. The anterior portion of the mandibular articular 
surface possesses an accessory trochlea. 
Our four Coceygomorph quadrates, differing greatly among themselves, unmis- 
takeably suggest divergent resemblances with other Desmognathous groups. That 
of the Toucan recalls the Vulture and Buzzard among the Aétomorphe, save that 
the condition of the pterygoid condyle and the lateral outline of the lower part of 
the bone perhaps suggest a closer likeness to the Pelican and Gannet. 
The quadrate of Alcedo is eminently suggestive of affinity with the Parrot, in 
respect of its long shaft, its indistinct capitula, its aborted anterior process, its 
imperfect pterygoid condyle, and the antero-posterior extension of its anterior 
mandibular condyle. 
With regard to that of Dacelo, the resemblance to an Owl’s would be extremely 
close, were it not for the widely-separate capitula of the latter; but the affinity 
with the Pelargomorphe (hinted at by Huxuey) is but hazy, the accessory trochlea 
being almost the only point to support it. 
The quadrate of Upupa has points of resemblance with Rhamphastus or Alcedo 
within its own group, and we may perhaps hazard also a suggestion of likeness to 
the Woodpecker. 
CELEOMORPH2. 
In this group we have been confined to a single species, the green Woodpecker. 
Fig. 18. Picus viripis. 
