NORTH AMERICAN LATER TERTIARY AND QUATERNARY BRYOZOA. 203 
Family LICHENOPORIDAE Smitt, 1866. 
Genus LICHENOPORA Defrance, 1823. 
(For description, see Bulletin 106, U. S. National Museum, p. 812.) 
LICHENOPORA CALIFORNICA Conrad, 1855. 
Plate 44, figs. 4-7. 
V 
?1852. Unicavea californica D’Orbigny, Paleontologie francaise, Terrains cretacis, vol. 5, Bryo- 
zoaires, p. 972. 
1855. Lichenopora californica Conrad, Note on Miocene and Postpliocene deposits of California, 
Proceedings Academy Natural Sciences Philadelphia, vol. 7, p. 441. 
1910. Lichcnopora californica Robertson, Cyclostomatous Bryozoa of the west coast of North 
America, University of California Publications, Zoology, vol. 6, p. 261, pi. 25, figs. 48, 49 
(bibliography). 
Historical .— Unicavea californica is thus defined by D’Orbigny, 1852: “ Espece 
tres convexe endessus, ayant le centre excav6, et pourvue de pores intermediaires 
6normes. Madelaine, Basse Californie.” Its classification in the genus Unicavea 
indicates moreover that the colony is discoidal, creeping, incrusting, provided with 
a single series of cellules in the rows. 
Waters, 1905, 8 examined D’Orbigny’s type preserved in the Museum of Paris. 
He notes: "The zooecia are uniserial, slightly raised; zooecia and cancelli about 
the same size. This does hot seem to be the Discoporella californica of Busk.” 
What Conrad, Gabb and Horn, Busk, and Robertson have named Lichenopora 
californica does not appear therefore to be the species of D’Orbigny, as thezoarium 
is free and the fascicles are biserial. Under these conditions we believe it necessary 
to substitute the name of Conrad, 1855, for that of D’Orbigny. It is useless to 
change the specific name, as the specimen of D’Orbigny has not been figured. 
Structure. —The structure of this species is quite constant. The zoarium is 
free and very convex. The fascicles are regular and biserial. The cancelli are 
very large and often wider than the tubes. The ovicell is placed in the center 
of the zoarium and hidden by the cancelli. The oeciostome is large, orbicular, 
salient, placed excentrically in the vicinity of the fascicles. 
Occurrence. —Pleistocene: Santa Barbara, California (rare). 
Plesiotypes. —Cat. No. 68751, U.S.N.M. 
LICHENOPORA HISPIDA Fleming, 1828. 
Plate 44, figs. 1-3. 
1828. Discopora hispida Fleming, History of British Animals, p. 530. 
1884. Lichenopora hispida Hincks, Polyzoa of Queen Charlotte Islands, Annals and Magazine 
Natural His ton', ser. 5, vol. 13, p. 207. 
1889. Lichenopora hispida Jelly, A synonymic catalogue of marine Bryozoa, p. 134 (general bibli¬ 
ography). 
1901. Lichenopora hispida Whiteaves, Catalogue of the marine invertebrates of eastern Canada, 
Geological Survey of Canada, p. 112. 
1905. Lichenopora hispida Neviani, Briozoi fossili de Carrubare, Calabria, Bollettino della Societa 
geologica italiana, vol. 23, p. 554 (52). 
* Notes on some Recent Bryozoa in D'Orbigny’s collection, Annals and Magazine of Natural History, ser. 7, vol. 15, p. 15. 
