THE RIGHT WHALE OF THE NORTH ATLANTIC. 899 
condyls were separated behind by a marked interval, but were only an inch asunder in 
front. The exoccipital extended outwards from the condyl to the squamous temporal. 
The frontal contributed only a narrow edge to the vertex, but broadened on each 
side and ended in a strong bar which formed at its outer end the upper border of the orbit 
with the pre- and post-orbital processes, the latter of which was the larger. The malar 
and lachrymal bones had not been preserved in the skull from the skeleton, and the 
boundary of the orbit was incomplete. (See p. 919 for orbit in separate skull.) 
The parvetal did not reach the vertex, and articulated by its upper border with the 
lateral border of the occipital squama. It was seen on the side of the cranium locked 
between the frontal and squamous temporal. 
The squamous temporal was a massive bone nearly equal in vertical and transverse 
diameter, which gave breadth to the posterior part of the cranium. It ended externally in 
two blunt processes, the anterior of which was a little behind the orbital part of the frontal, 
whilst the posterior and most depending process provided the shallow glenoid concavity, one 
foot 2 inches in diameter, for the temporo-mandibular joint. The petrous temporal on the 
‘under surface of the cranium was locked between the squamous temporal and exoccipital. 
TaBLe I. 
Measurements of Skulls of Balende. 
B, biscayensis. B. mysticetus. 
R. 8S. M. | U. An. Mus.|U. An. Mus./U. An. Mus, 
ft. in. Nites ah ft. in ft, in; 
Length, condylo-premaxillary, in straight line, . : oq) Le 76s" Ss 9 Se 3 0 
ad over vertex curve, : oo ay ON a OP ls 9 
» from glenoid to tip of preety, : . Ce a a iy Gn | a (ee 
rs of superior maxilla, : ‘ : 5 5 | iO) iClear? 9 «8 , 
» of premaxilla, ; F F ; : ‘ al 8 a | DET Ope mez, 
, of rostrum in straight line, . ) @ iO @ 8 74 i 
from tip of premax. to middle of upper orbital border, UL al a bi I 8) 
Breadth i in squamoso- occipital region in straight line, oS 1G Sa eee aa) 4 2 
,, in frontal region between post-orbitals i in str aight Ime; 8 25.) 8 10 seats 4 24 
» base of rostrum in straight line, 5) oho 3 Il aes) A 
Occipital bone, greatest breadth, . OenG @ ii Beles 2 8 
i ,, height from foramen magnum, See pallet oc) My 15) 10 
ie i », from back of condyl, ee Ke) 3 Deel 9 
“ s » of foramen magnum, . 0 5 OG O 52; 0 4 
, breadth of foramen magnum, 0 5 0 > 5h | “O'-. 44 Sy 
Between pre- and post-orbital processes, Or riaulk Olen 0 6 0 54 
Nasal bone, length mesially, i 2 Eo 1 Of os 
— greatest breadth of each nasal, O6 OTE 08 OF 
Anterior nares, greatest breadth, . 1338 1 5 0 10 
"i », long dianieter, A OF a « 2 1% 
Posterior nares, vertical diameter, 0 84 0 5s) Qe 
», transverse diameter, ll Q QO... 8 
Hard palate, length along curve, 12 10 aie Tl ae 
» greatest breadth, 2G 208 1. 8 ‘ 
Mandible, length of outer surface of ramus, 13 25) 138 6 : =f 
a5 chord of arc of ramus, i 8s 2 ee a oe 
5 girth in front of condyl, 2 3. 1£ | 20 2 21 
y vertical depth, 3 feet in front of condyl 1 34) 1 4 0 8 
- » 4 feet behind free end, Oni © i 3 
a diameter of condy], ee La | : 
