The works of Francis Maitland Balfour, Volume 2 (of 4)

by Francis M. Balfour

[89]

I. Turbellaria.

1. Dendrocœla.

2. Rhabdocœla.

II. Nemertea.

1. Anopla.

2. Enopla.

III. Trematoda.

1. Distomeæ.

2. Polystomeæ.