标题：Results of the Puritan-American Museum of Natural History Expedition to Western Mexico. 13, Ascophoran Cheilostomata (Bryozoa) of the Gulf of California. American Museum novitates ; no. 2053
摘要："In the Puritan collection of 75 species of ascophoran Bryozoa, four are described as new species. Twenty-six species are reported here for the first time from the Gulf of California, among which are three species that are also additions to the Panamic fauna. Of the 71 previously described species, 9 per cent are cosmopolitan, 46 per cent have been recovered in both temperate and tropical waters, 4 per cent were confined to warm temperate waters, and 41 per cent are presently known from only tropical waters. The bryozoan material in the Puritan collection was collected from the littoral zone, at depths ranging from intertidal to a maximum of 50 fathoms"--P. 62.
