704 ANNEXE I 
Our first specimen did suggest relationships with Ziphius Cuvieri’. 
Dr. Scnarrr, however, who examined the drawings and read the descrip- 
tion said that the specimen was Mesoplodon Hectori Gray. The nasal 
bones of the larger skull are of the same character as the smaller and 
separate. So we regard the diagnosis as confirmed. The skull of the 
second is 1°,05 long, 54 cm. wide behind the rostrum. 47 em. in height 
to the occipital summit. The apex of the beak is 68 cm. from the ante- 
rior part of the frontals. The skull is very asymmetric. The internarial 
septum is 295°" from the right side and 225" from the left side, The 
premaxillæ bound the nares at thesides. That of the left side is 5 cm. 
wide at the lower part of the nares, whilst the right is 11 em. wide at the 
anterior limit of nares. The walls of the rostral groove are thick, much 
thicker than in the first found specimen which had thin and brittle outer 
walls. The vomer presents a hollow surface in the floor of the groove. 
The left nasal is much smaller than the right and the internasal su- 
ture runs outwards, downwards and forwards. 
A groove runs along the outer side of each maxilla for 20 cm. and 
along the upper margins of the lower jaw for 41 em. 
A large socket is situated on each side of the apex of the lower jaw, 
each is 18"® from before back by 13°" from side to side, for the two 
teeth. The teeth are conical or double conical, the fang of each is trun- 
cated (see Irish Naturalist, June 1904); both teeth are concealed by the 
mucous membrane. 
The condyles of the occipital bone are 6 mm. apart in front and 76%" 
behind. 
The premaxillæ which reach far back in the middle line of the palate 
are separated from each other for 110"" by the vomer. The premaxillæ 
form the apex of the beak also and extend backwards for a distance of 
15 em. (beneath) the maxillæ externally. 
The palatines, as was pointed out, reach the middle line behind the 
vomer. The palato-maxillary suture runs forwards, inwards and back- 
wards, and bounds anteriorly a surface that is 4 cm. broad at the middle 
line and the same breadth at the bend forwards. 
The maxillæ make an acute angle between the palatines. The cranial 
cavity could not be satisfactorily measured. It appears to be 19 cm. from 
before back 35 cm. from side to side and 17°°,5 in height. 
The skull in the smaller specimen is less asymmetric than the present 
example, which is half as large again as the first. 
The sternum of the first has four pieces separated by three foramina, 
placed at the joints, the foramina being in the middle line as usual. The 
! The nasal bones are conjoined in Ziphius. There are differences in the tympanic 
and naso-premaxillary bones. 
