130 
Ribs about ten or eleven pairs in 
umber. 
Skull abruptly contracted into the 
attenuated rostrum, which e equals 
with the ros- 
tral part oblong and acute conic. 
Cerebral cavity declining down- 
wards. 
Occipito-sphenoid axis angular; 
the basioccipital portion very de- 
clivous 
d 
portion inclining upwards 
Basisphenoid (bs) and palatines 
(pal) not or scarcely visible from 
the side, being concealed from view 
by the exoccipitals and Squamosals. 
Frontal (f) with the exposed sur- 
face broadly triangular above be- 
t 
illaries; cury 
tapping oe the process is 
very disti 
Squamosal (s) with an external 
pet triangular surface, and with 
a zygomatic process for articula- 
tion with the ; contributing 
little egt: I" the floor of the 
temporal fos 
and articulated with z 
cesses of the squamos. 
Jugals (j) inclined Wabi wastes: 
zygomatic p: 
Nasal (n) bone flat, smooth. 
THE SPERM WHALES, GIANT AND PYGMY.. 
Ribs about thirteen or fourteen 
pairs in number 
Skull gradually sloping into the 
rostrum, which is shorter than the 
condylo-orbital line; above, reni- 
form get with the rostrum ob- 
tusely co 
Cerebral cavity inclining up- 
wards. 
Occipito-sphenoid axis continu- 
ous upwards from the thickened 
horizontal floor in front of the fo- 
ramen magnum 
Basisphenoid and pa 
curved downwards and outwards, 
and largely exposed to view from 
the sides. 
Frontal with the exposed surface 
retrorsely curved above; with an 
angulated margin above the tem- 
poral cavity. 
Squamosal with a small, tesis 
surface, but a large incurved sur- 
face, forming the largest nosti 
of the periphery of the temporal 
fos 
Jugals inclined downwards and 
remote from the squamosals. 
Nasal bone with a thickened sig- 
moidally sinuous ridge continued 
from the nasal septum to the ver- 
tex, and with a less defined branch 
exten from its Apre part 
nding 
forwards on the right rmax- 
illary. 
