Two kinds of whaling are conducted in St.Vincent and the Grenadines at present. One is humpback whaling at Bequia, the other is pilot whaling at St.Vincent. In this paper, some aspects on the pilot whale fishery in Barrouallie, a leeward town in the island of St.Vincent, are examined. 　The pilot whaling in Barrouallie was started around 1910.The Barrouallie whaleboats were 20 to 24 feet long. They were powered by sail and oars and carried a crew of five. Barrouallie whalemen caught pilot whales and other small cetaceans with hand harpoons and hand lances. A light harpoon gun mounted on a stand bolted to the foredeck was added in 1962, replacing the original hand harpoons.By 1972 all of the boats had been converted to engine power. There were four boats in the early 1970's and two to three boats in the early 1980's. The average annual catch of the pilot whales was 267 in the 1970's. It dwindled to 117 in the 1980's. 　Four boats are operating in 2001. Each boat is equipped with a harpoon gun and gun harpoons, a number of hand harpoons and hand lances. Three men work in a whaleboat.From bow to stern, they are a 'harpooner', a 'working man' and a 'captain'. The most skillful harpooner in Barrouallie caught 70 pilot whales, 25 false killer whales,350 porpoises, 4 killer whales and a Bryde's whale in 2000. According to him, a total of 110 pilot whales were captured by the four boats in 2000. Fresh pilot whale, porpoise and whale meat is sold at the dockside to local middlemen or to individuals for home use. The middlemen sell the meat in the capital, Kingstown, either fresh or corned. 　The average annual catch of the pilot whales has been steady (110 to 120) for the past twenty years. As long as the annual catch of this scale continues, the pilot whale fishery in Barrouallie could be presumed to be a form of sustainable use of living resources.

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The right testis lobe (50g in weight)，removed at the time of death (12 June，2000) from a senile，23 year-old Californian sea lion, Zalophus californianus, reared in the Niigata City Aquarium，was examined histologically．The epithelium of the seminiferous tubules in the testicular part comprised primary spermatocytes and a few Sertoli (sustentacular) cells．However，relict sperm and spermatids were occasionally detected in the wide lumen of the seminiferous tubules and also in the epididymal duct．These confirmed the senile, quiescent state of the animal，the testis lacking active spermatogenic and spermiogenic cells.

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　2001年２月26日に、新潟県西山海岸へ漂着した幼ネズミイルカの雌性生殖器（卵巣，卵管＝ファロピウス管、双角子宮、膣ならびに尿管）を、組織学的に観察した。全長1.02ｍのこの個体は、一旦砂中に埋められたが掘り起こし、臓器を摘出して10％フォルマリンで固定した。生殖器等は、ブアン氏液に再固定して切片を作成し、ヘマトキシリン・エオシンの二重染色と、マッソン・ゴールドナ（三重染色）＋アルデヒドフクシンによって染色検鏡した。ところが、顕微鏡像は予想以上に良好で、充分な観察に堪え得た。卵巣は長さ19mmと21mmで、皮質部には多数の原始卵胞と扁平卵胞上皮に囲まれた一次卵母細胞、および多量の間質細胞から成る髄質部には、低柱状卵胞上皮に囲まれた一次卵母細胞と少数の閉鎖卵胞が存在していた。卵管は複雑にひだ打った粘液腺で、微絨毛をもつ高柱状上皮細胞と少数の繊毛細胞から成っていた。子宮腺は短管状で、狭い腔所を円錐状細胞が囲んでいた。膣壁は偽重層粘膜上皮であるが、空胞状の細胞と角質化した細胞層とから構成され、最外層は剥離していた。膀胱隣接部の尿管上皮も偽重層で、乳頭状を示し、萎縮核をもつ明調細胞から形成されていた。これらの像は、この個体がまだ未熟の幼獣であることを示唆している。

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