A memoir on the Palaeozoic reticulate sponges, constituting the family Dictyospongidae,
by James Hall, in collaboration with John M. Clarke.
- New York and Albany, Wynkoop Hallenbeck Crawford Co., 1898.
- 350 p. illus., LXX pl. (part fold.) 36 cm.
On cover: University, state of New York. State museum. Memoir II. At head of title: University of the State of New York.