Delphinus dussumieri Blanford 
" Ma-jruka *” 
PL. III, fig. 5. % La 
Head small; rosirum elongated, about 70 per 
cent of whole length of skull. Teeth small, coni- 
cal, bending backwards, 56—65 in number in both 
jaws, Dorsal fin falcate, and situated on mid- 
dle of back. Pectoral fins slender and pointed, 
Colour of dorsal part of body, snout, and dorsal 
fin entirely black, becoming white beneath, 
Reaches a length of 2—5 matres, 
This species lives in Indian and Pacific Ocean, 
Large schools, pursuing the pelagic fishes, are 
often seen in the sounds and along the shore. The 
time of calving is spring. New-born young ara 
500mm, long. Flesh and skin are utilized as food, 
and oil is esteemed as machine oil, 
Lagenorhynchus obliquidens Gill 
** Kama-iruka " 
PL. III, fig. 6. xX Taq 
Body elongated; head small, with short, not 
very distinct beak. Dorsal fin large and falcate, 
and situated, on middle of back. Pectoral fins 
Slender and pointed. Teeth small, 35—87 in 
number, Colour greyish black aboye, with 
lateral broad longitudinal stripes of white grey 
and dull black; white below. This is a North 
Pacific species of great activity. Flesh, skin, and 
oil are utilized same in the way as those of the 
former species, 
Orcinus orea (Linné) 
t Syati 
PL. III, fig. 7, (> ۵ 
Body robust, fusiform; head small: dorsal fin 
very large and falcate, situated in front of 
middle of back; pectoral fins short and ovate, 
Teeth formula 0. 345 —40 - 52, 
Colour of head, dorsal part af body, and fins 
black, more or less marked with white blotches ; 
has a fusiform white spot behind the eye; body 
white below. 
The killer whales occur in all parts of ocean 
throughout the world. They are the largest among 
the Delpbinidae, reaching a length of Y metres. 
They are powerful, rapacious animals, and are the 
only whales that feed upon their own kind and upon 
large prey. 
Physeter macrocephalus Linné 
“* Makko-kudira ۳ 
PL. m, fie. 1. GANG 
Body large ; head enormous; snout blunted, blow 
hole single on left side; dorsal fin represented by 
a series of low humps: conical teeth 40—50 in 
number, in lower jaw only. 
Average length 14 metres, but some specimens 
are as Be as 23 metres. Body blackish-grey, 
getting grey on the snout and lower jaw.  Peeto- 
ral fins not large, measuring 1 metre in a full 
grown whale. Caudal fin large. 
Occur in every ocean, and though preferring 
warmer water, are to be found in great abundance 
off the coast of Kinkwazan, Miyagi Prefecture. 
The good season for hunting are the months from 
June to November. 
It is said that the optimum water temperature 
for the migration of this species is 20°—22" C. 
Sperm whale feeds mainly upon gigantic euttle- 
fish, which inhabit the deep sea. 
Oil of this whale, particularly that of its head 
cavity, is highly prized. 
Berardius bairdii Stejneger 
* Tuti-kudira " 
PL. III, fig, 2 ۹ 
Body large; head somewhat round; snont pro- 
duced; teeth two on each sides of lower jaw. 
Dorsal fin small, situated on the posterior portion. 
Pectral fins also small and faleate. Blow hole 
median and ereseentic, with a concavity forward. 
It reaches a length of Y metres. Colour greyish- 
black. This is a North Pacifie species. In Japan, 
its schools are often found off the coast of Awa 
Province. From it is obtained the good oil which 
is yellowish in colour. 
Globicephala scammoni Cope 
۶۶ Gondo-kudira ۲ 
PL. IIT, fig. 3. Vio 
Body elongated ; head round and somewhat large ; 
dorsal fin situated in front of the middle of back, 
and of large size with faleate form. Pectoral fins 
slender and pointed. "Teeth very few in number, 
in hoth jaws in the anterior part only, Colour of 
skin entirely black. It attains the length of 8 
pum This species inhabits the North Pacific 
cean, 
Flesh and skin are utilized as food and oils as 
machine oil, 
Neophocaea phocaenoides (Cuvier) 
** Sunameri '* 
PL. III, fig. 4. X Um 
Body elongated; snout round, with no beak. 
Heaches a length of 4 metres, Characterised by 
the absence dorsal fin. Peetoral fins ovate. 
Formula for teeth 18 =72, | 
Colour blaek, with violet spot on the upper lip 
and throat. 
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