@article {63,
	title = {Notes on British Tunicata with Descriptions of New Species. I. Ascidiidae},
	journal = {Journal of the Linnean Society of London},
	volume = {15},
	number = {85},
	year = {1881},
	chapter = {274},
	author = {Herdman, W.A.}
}
@article {188,
	title = {Nuove contribuzioni alla Storia Naturale delle ascidie composte del Golfo di Napoli.},
	journal = {Atti. Reale Accademia Nacionale dei Lincei Series 3},
	volume = {10},
	number = {3},
	year = {1881},
	pages = {431-498},
	author = {Della Valle, A.}
}
@article {494,
	title = {Preliminary report of the Tunicate of the "Challenger" expedition, part IV. Molgulidae},
	journal = {Proceedings of the Royal Society of Edinburg, Sess. 1880-81},
	volume = {11},
	year = {1881},
	pages = {233-240},
	author = {Herdman, W.A.}
}
@article {117,
	title = {Preliminary report on the Tunicata of the Challenger Expedition. Part III. Cynthiidae},
	journal = {Proceedings of the Royal Society of Edinburgh},
	volume = {11(3)},
	number = {3},
	year = {1881},
	pages = {52-88},
	chapter = {52},
	author = {Herdman, W.A.}
}
