136 CETACEA. 
The following is the measurement of D’Orbigny’s specimen :— 
met. cent. 
Length, entire 3) SOU 
ft et muzzle eae . OFg a 
Beh ee ye Se Se es ae ae 0 34 a 
b> OfethlaGwer 2. ais Vs ee 0 40 
Bei). MOORES Gacie's 38 ot ance 0 43 
sts, to. pectoral fin ...0% ....% 0.52 
Bets) SO OPER MT A. arate: opie 1 30 
og. .” OL POCtOFAl §. oieisins tas alte 0 42%. 
Breadth of pectoral ............ 0 18 
rh ee Cada cs STW eR oe 0 50 
Heicht of dorsal’). 08005999 Ow’g 
Circumference of thickest part... 1 4 
The specimen in the Paris Museum, which Desmarest described — 
as Delphinus Geoffroyii, is evidently this species. It was taken — 
from the Lisbon Museum, and is covered with paint. It has no 
dorsal, and it shows the teeth sufficiently to exhibit their rugose — 
state, and the large and peculiar tubercle on the inner side of the 
hinder ones, which is characteristic of this genus, and which ap- — 
pear to have been overlooked by M. Desmarest, who describes — 
them as “ coniques, obtuses, avec une sorte de collet inférieure- — 
ment, et entre leur surface est rugueuse.” a 
This painted Lisbon spécimen, according to M. F. Cuvier, was — 
the type on which Cuvier described his Delphinus frontatus (Ce- — 
tac. 122). a 
The skull in the Paris Museum, from M. D’Orbigny, has a 
prominent tubercle behind the blow-holes : eyebrows convex and 
rugose on the top; beak with a slight groove on each side above; — 
lower jaw with scarcely any ridge on the sides; the symphysis” 
long, occupying more than half the length of the lower jaw ; teeth — 
large, regular, hinder ones with a rounded, regular tubercle on ~ 
the inner side. og 
Length of skull ...... 19 
i © “oftbeak & oo acae 12 
»  ofsymphysis.. 9 
5 of teeth-lme .. 11 
The Delphinus macrogenius (Fischer, Cuvier, Oss. Foss. v.32, . 
t. 23. f. 4, 5. f. 9-11) appears to belong to this tribe. 2 
e. Skull with the mazillary bones bent up in front of the blower 
and forming a vault. Teeth compressed. Paddles or pec- 
toral fins fan-shaped, truncated at the end. Platanistina. 
Platanistina, Gray, Zool. E. & T. 45, 1846. 
a 
” 
. 
