348 MR. W. K. PARKER ON THE OSTEOLOGY OF BALANICEPS REX. 
EXPLANATION OF PLATES. 
PLATE LXIV. 
Figures of male BALzZNIcEps REX from the living bird in the Zoological Gardens. 
PLATE LXV. 
Skull of Barzniceps REx (Nat. size). 
Fig. 1. Side view of skull. eth. Ethmoidal or anterior margin of 
pro. Par-occipital process. pre-sphenoid of Goodsir; eth- 
fo. Passage leading to the fenestra moid of authors. 
ovalis. mr. Malar; an oblique tract in front 
m. Upper mastoid eminence. of the malar is the maxillary. 
ep. Epiotic eminence. qj. Quadrato-jugal. 
p- Parietal. q. Os quadratum. 
fr. Frontal. pal. Palatine. 
tf. Temporal fossz. pg. Pterygoid. 
sq. Squamosal. Fig. 2. Side view of mandible. 
pf. Post-frontal. d. Dentary. 
tr. Passage for trigeminal nerve— sy. Symphysis menti. 
foramen ovale. sag. Surangular. 
op. Optic foramen. ag. Angular. 
as. Ali-sphenoid. art. Articular. 
pt. Petrosal. Fig. 3. End view of skull. 
bs. Basi-sphenoid. c. Hemispherical occipital condyle 
os. Orbito-sphenoid. (end of basi-occipital). 
psp. Pre-sphenoid ’. fm. Foramen magnum. 
of. Groove for the olfactory nerve. vg. Passage for the vagus nerve. 
1. Lacrymal. eo. Ex-occipital, spreading into the 
n. Nasal. par-occipital process. 
npg. Nasal passage. (The dotted line m. Upper mastoid eminence. 
is on the septum.) ep. Epiotic eminence. 
pma. Pre-maxillary. so. Supra-occipital crest. 
whilst the posterior part has marked Ralline and even Ibidine characters. The long toes, moreover, are like 
those of the Macrodactyli; but the leg-bones and the bones of the upper extremities are, save in point of size, 
exactly the counterpart of those of the common Grey Heron. 
* The letters psp are on that part of the intero-orbital septum where the ‘ ethmoid’ of authors has coalesced 
with the true pre- or rather orbito-pre-sphenoid: in the text we have followed Professor Goodsir (whom we 
now believe to be wrong) in attributing most of the septum to the pre-sphenoid. 
