128 



ToKio Kabuijaki 



aiul about Shikoku and Kyushu in winter. Swimming in sclioola in 

 the seas around Japan proper and Hokkaido is found the common fin- 

 whale {Bed. physalus) which appears in the north in summer, and in 

 the south in winter. The Sei whale {Bal. horealis) has a range almost 

 similar to the preceding, extending from the southern Kuriles in the 

 north to as flir south as the Goto group. Their famous hunting 

 grounds are off the southern Kuriles, Nemuro in Hokkaido, Kinkwasan, 

 the Shiwo-no-misaki, the Got5 group, and Korea. 



Here intruded from the southern seas are found a few species of 

 reptiles, like Disterio. cyanocincta, Uydrus platulus, Caretta oKvacea, 

 and EretmocJielys squamosa which sometimes extend north up to 

 Hokkaido. 



The chief species of fishes, the occurrence of which marks this zone 

 off from the others, may be said to be Cynias onanazo, RyijorJiampJms 

 sajori. Apogon semilineatus, HaUchoeres poecilopterus, ete. Some 

 valnal)le fishes, as the Japanese porgy, bonitos and tunnies are caught 

 here in immense quantities. Of scombroid fishes, Scomher japomms 

 and Thunnus orientalis are found on both sides, the Pacific and the 

 Japan Sea, extending from Saghalien and Hokkaido in the north to the 

 East China Sea in the south. Besides, this district abounds in sardine 

 (Sardinea meJanosticta), which is replaced in the north by the herring 

 and in the south by Etrumeus micropms. Engraidis japonicus also 

 occurs in much abundance, having a range somewhat wider than the 

 sardine. Here it may be noticed that, assuming the Boso peninsula to 

 be a l)0undary, the species of the northern area gradually drop off, and 

 the species of the southern area become more and more conspicuous. 

 The reverse is true of the southern elements. 



Amongst ascidians we find some species like HalocyntJu'a karashoya, 

 Microco^mus hartmeyeri, Styela krohoja, etc. 



Echinoderms are |)lentiful, being comprised of a number of inter- 

 esting species. The following are those of the most noteworthy: 

 OpJdostiba liidehii, Asteroschema japomcum, OpMacantha ancMlabra, 

 Ophiura monostoecJia, etc. of brittle-stars; Ctenodiscus crispo.tus, 

 Astropecten poly acanthus, Luidia quinaria, etc. of star-fishes ; Cidoris 

 hiseria.Us, MespiUa levituherculatus, Pseudoceoitrotus depressns, Sphae- 

 rechiiius pnlcherrinus, AstricJiypeus manni, etc. of sea-urchins ; and 

 Bofhyplotes golden-hindi, Laetmogone neglecta, Feriamma kumai, 

 Enypniastes eximia, Stichopus owstoni, etc. of sea-cucumbers. 



Amongst crustaceans, one of the most notable is a giant crab, 



