Proceedings of the United States National Museum SMITHSONIAN INSTITUTION • WASHINGTON, D.C. Volume 112 1960 Number 3445 LITHOGLYPTLS SPINATUS, A BURROWING BARNACLE FROM JAMAICA By Jack T. ToxMlinson and William A. Newman 1 While in Jamaica in the spring of 1959, Stephen A. Wainwright of the Department of Zoology, University of California, collected spec-imens of the coral Acropora palmata containing the large burrowing barnacle, Lithotrya. At Berkeley we found associated with this bar-nacle a minute burrowing barnacle that has proved to be not only a new species, but a critical form in the taxonomic status of the families Chytraeidae and Berndtiidae of the order Acrothoracica. This Jamai-can acrothoracican has given us grounds for uniting these families with an older family, the Lithoglyptidae. The family Lithoglyptidae was established by Aurivillius in 1892 to accommodate three species of acrothoracicans: Lithoglypies indicus, ampulla, and bicornis. Utinomi (1950b) established a family, the Chytraeidae, in which he placed Lithoglyptes ampulla and bicornis (under the genus Chytraea). This classification was made because an adhesive disc was not mentioned in Aurivillius' description of these two species, and Utinomi believed that they attached to their burrows by means of their apertural hooks and spines. » The former is a member of the Department of Biology, San Francisco State College, San Francisco, California; the latter is a member of the Department of Zoology, University of California, Berkeley, California. 517
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