@article {1755,
	title = {Ascidians collected in the vicinity of the Oga Peninsula, the Japan Sea},
	journal = {Memoirs of the National Science Museum},
	year = {1984},
	pages = {149-161},
	author = {Nishikawa, T.}
}
@article {1753,
	title = {Some ascidians collected in the vicinity of Shimoda, Izu Peninsula, middle Japan},
	journal = {Memoirs of the National Science Museum},
	volume = {15},
	year = {1982},
	pages = {203-212},
	author = {Nishikawa, T.}
}
