320 PROF. W. K. PARKER ON 2AGITHOGNATHOUS BIRDS. 
does not obscure this region; the dentary, nasal, and palatine processes of the premax- 
illary are well marked (figs. 1-3); the body of that bone is of great length. 
The palatine arch, like that of Artamus, has lost the distinction of proximal and distal 
segments; the pterygoids, as in the last three instances, are straight, stout bones, 
becoming alate in front; the epipterygoid hook (fig. 1, e.pg) is typically developed. 
The postpalatine crests (pt. pa) are less everted than in Grallaria, and are very close 
together ; they are quite as large as in that type and in Pitta; the interpalatine spur 
is aborted, and the ethmo-palatine lamina is scrolled (fig. 5, epa). The mesopalatine 
region is becoming of greater extent ; and the transpalatine snags have that remarkable 
development backwards seen in many Southern passerines. The prepalatines are very 
pittine, short, broad, fibrous, concave above, and convex below. 
The maxillo-palatine lamin are elegant little ears of bone, and are far apart, articu- 
lating with the angles of the broad-shouldered vomer ; the strong but slender and com- 
pressed zygoma (J) is one with the rest of the fore face. 
Dendrocolaptes is above the Formicariide in the condition of the maxillary palatal 
plates, as well as in the palato-pterygoid arch. As in many of the higher passerines, 
there is a small lacrymal (fig. 3, 7) ankylosed to the upper part of the descending crus 
of the nasal. The antorbital (fig. 3, p.p) has a concave outer margin, and a very 
uncinate angle; below, it has a suture, dividing off the tip and the fore part of this bar 
from that which passes inwards to the meso-ethmoid (p. ¢). The angle and part of the 
outer face is the os uncinatum (0. w); and this has most probably coalesced above with an 
upper lateral ethmoid, the bone described in the Rook (Pl. LV. fig. 5). The foramen 
for the two nerves (figs. 3, 1, 5’) has lessened very much in size. The ecto-ethmoid is 
not flush with the face as in most passerines; and the frontal portion is small. This 
bird is not one of the highest of the Southern Coracomorphe ; it is an ascent, however, 
from the Formicariide. 
Example 11. Anewretes parulus. 
Habitat. Chili. Group ‘“ Tracheophone,” Miiller; family “'Tyrannide.” 
This is one of the smallest of the family, and, like one of the smallest of our native 
Warblers (the Wren), shows a peculiarity not seen in larger forms, namely a develop- 
ment of the vomerine cartilages equal to what is seen in T'wrniv. 
The bat-shaped basitemporal plates, and the rounded parasphenoidal beam (PI. LIX. 
fig. 4, pa.s) are quite similar to those of the next example, Synallavis (Pl. LIX. fig. 6, 
bt, pa.s); the hinge is perfect; and the septum nasi (s.) is very large and thoroughly 
ossified ; it is alate, as in Corvus and Sylvia. 
The recurrent alinasal fold (fig. 4, r¢.c) and the hinder part of the alinasal wall 
(fig. 4, x. w) are also ossified. The postero-inferior element of the septum nasi is entirely 
ankylosed with the bony matter from the roof and front of the septum; and the chink 
