54 PROFESSOR OWEN ON INDIAN CETACEA. 
the name Euphysetes grayi, may be discerned at a glance the more immediate affinities 
of the present species, which I propose to call Physeter (Euphysetes) sinus, in reference 
to its peculiarly short obtuse muzzle. 
Description of the Skull. 
(Pls. XIL, XIIL, & XIV. fig. 1.) 
Short as is the upper jaw in proportion to the skull in Phocena brevirostris (Pl. IX.), 
it is shorter in the subgenus or section of Physeteridw represented by the Physeter 
breviceps, De Bl. (Pl. XIV. fig. 3), and shortest of all in the present species (ib. fig. 1). 
In the following Table of admeasurements are given those of the Physeter (Euphysetes) 
grayi, Macleay (the larger species which was stranded on the Maroobrah beach, near 
Sydney, New South Wales, and the skeleton of which is now in the Australian 
Museum of that city), with the few admeasurements appended by De Blainville to his 
notice of Physeter breviceps, from the Cape of Good Hope}. 
P. simus. P. grayi. P. breviceps. 
inches. lines. | inches. lines. | inches. lines. 
Length from the back of occipital condyles to end of snout....| 10 5 16 6 15 5 
| Breadth across postorbital processes ...............2ee000- 9 5 14 0 
| Breadth across the beginning of malo-maxillary fissure ...... te UY) 9 6 
From the back of occipital condyle to antorbital process of 
CHE Ae eo PaO MOR TC CIOICL: SRO OOM Sek acRO eC Cia 
From the antorbital process of malar to end of snout ........ 
From the back of occipital condyles to posterior wall of left | 
MLOS URI" soranele such cre "sa SaY eat co te atrcioutis Een eee te en Meret nha 
From the bottom of malo-maxillary fissure to end of snout.... 
| From the beginning of malo-maxillary fissure to end of snout. . 
Breadth of snout between the fore part of the antorbital notches 
Ginithallbink SOontio ween oer danGod Goo camorictee 
| Breadth of snont at its extremity 2... 0..26- sess seme ctene 
Breadth of premaxillaries at the malo-maxillary fissure ...... 
| Breadth between anterior ends of premaxillaries............ 
Antero-posterior diameter of left nostril 
Mransyerse diameter of lett nostril’. - jr ciccieiee eepelels eres are 
Antero-posterior diameter of right nostril 
Transverse diameter of right nostril ................00005: 
| Length of interfrontal crest, straight line 
Width of occipital foramen 
) Vertical diameter of foramen 
A 
eo 
poo 
die 
DH 
W Ga eie aie. win aye aetna 13. «10 
Lengthiofialveolar:series) 3.2.2, <:.%s5. stoke w dc aotatehalomsitoene TO 
Height of mandible at coronoid ridge 
DWWONANHFHEWOOCOHRHONE ER BOF 
HOAANODWAKWOURWHS 
vo 
POOH RMEOHOWNHWNHO NIA 
WWWOOSRANORHOWHSOSD WOO 
In the skull of the Physeter simus the occipital elements have coalesced with each 
other and with the surrounding bones. The vertical diameter of the basioccipital 
* Annales Frangaises et Etrangéres d’Anatomie et de Physiologie, tom. ii. tab. x. (the admeasurements 
are given in French inches), viz. :—‘“ Longueur du crane 14 pouces et demi,’”=15" 5’, Engl. “Longueur de la 
machoire inférieure 13 pouces,”=13" 10'", Engl. Ecartement de ses condyles 12 pouces,’”=12" 9” Engl. 
