450 Transactions.—Zoology. 
The humerus, ulna, and radius resemble also considerably those of 
M. sowerbiensis. The epiphyses on both extremities are so well anchylosed, 
that scarcely the line of junction can be traced. The elements of the carpus 
are, with the exception of the magnum and trapezoid (which are united to 
one bone), all separate, thus resembling also the M. sowerbiensis and the 
New Zealand Epiodon. The same appears to be the case with the digits, 
which, however, have somewhat suffered, as the pectoral fins had been 
much lacerated before the skeleton was secured. 
Pelvie Bone. 
The pelvic bone for the attachment of the erura of the penis is of small 
size, and of rather irregular form. It is 4 inches long, 0:37 inches broad 
near both extremities, and 0-25 inches in the middle portion. It is rounded 
osteriorly, and flat anteriorly, getting gradually flatter as we reach the 
lower end of the bone. Tt is very light and spongy. 
ILLUSTRATIONS EXHIBITED. 
No. 12. Skeleton of Mesoplodon Sloweri. Pl. XXV., Fig. 2. 
» 13: Skull » j ET Side view. Pl. XXVI., Fig. 2. 
BO ES $i ii á Upper ,, 
354. 7. m "s j OWer ,, 
» 416. Cavity of the trunk As seen from thepoint, 
» 17. Sternum. PLXXVL, Fig. 5. 
Art. LVI.—On Oulodon : a new genus of Ziphioid Whales, 
By Juris vox Haasr, PELD, FERS. 
(Read before the Philosophical Institute of Canterbury, 6th September, 1876.] 
Ix the month of May of last year (1875) the Canterbury Museum re- 
ceived from W. Hood, Esq., of the Chatham Islands, three skulls of Ziphioid 
Whales, taken from specimens stranded with about 95 others during the 
summer of last year on the Waitangi beach of the main island of that 
group. They were described as ** black fish," all belonging to the same 
shoal, by my informant, who moreover believes that the whole series be- 
longed to the same species. Unfortunately the skulls were so badly sepa- 
rated from the body that the occipital portion has been cut off, so as to lay 
the brain cavity open, but as they were brought over with the greater 
portion of the skin still attached, some hitherto unknown and as I think 
peculiar characteristic features in the dentition of a ziphioid genus have 
fortunately been preserved. 
These three skulls aecord in many respects with the genus Mesoplodon 
of Gervais, of which I will point out only one, viz., that they possess one 
tooth in each ramus of the lower jaw opposite the posterior edge of the 
