106 BUIXETIN 125, UNITED STATES NATIONAL MUSEUM. 



marl) : Muldrows Mills, 5 miles south of Maysville, South Carolina (very rare) ; 

 Wihnington, Natural Well, 2 miles southwest of Magnolia, etc.. North Carolina 

 (rare). Miocene (Yorktown formation): 1 mile west of Fort Nonsense, Gloucester 

 County and other locaUties in Virginia (rare) . Miocene (St. Mary's formation) : 

 Bowler's wharf, 18 miles above Urbana, Middlesex County, Virginia (rare). PH- 

 ocene (Caloosahatchee marl) : Monroe County, Florida (rare) . Pleistocene : Simmons 

 Bluff, Younges Island, Charleston County, South Carolina; Daytona, Florida (rare). 



Geologic distribution.- — In Europe since the Stampian. 



Habitat. — Atlantic, Mediterranean, and boreal seas. 



Plesiotyfe.—C&t. Nos. 68559-68565, U.S.N.M. 



SCmZOPODRELLA FLORIDINA Osburn, 1914. 



Plate IG, figs. 11-15. 



1914. Schizoporella floridina Osburn, The Bryozoa of the Tortugas Islands, Florida, Publications 

 Carnegie Institute of Washington, No. 182, p. 206, text figs. 17, 18. 



Variations. — The zoarium is massive and formed of a number of superposed 

 lamellae. Sometimes the zooecia are not oriented and are distributed in all direc- 

 tions. The large avicularium is very fragile and easily altered by fossilization. 

 The aperture in our fossil specimens is not exactly similar to that figured by 

 Osburn differing slightly in its rimule not placed at the level of the frontal. We 

 have not observed moreover the large interzooecial avicularium. 



Occurrence. — -Mocene (Duplin marl) : Wihnington and Lake Waccamaw, North 

 Carolina (rare) . Miocene (Choctawhatchee marl) : Jackson Bluff, Ocklockonee 

 River, 25 miles southwest of Tallahassee, Florida (very rare). 



Cotypes.—C&t. Nos. 68566, 68567, U.S.N.M. 



SCHIZOPODRELLA PUSILLA. new species. 



Plate 17, figs 18, 19. 



Description. — The zoarium is free and bilamellar or incrusting. The zooecia 

 are small, little distinct, elongated, claviform; the frontal is somewhat convex, 

 perforated by some large tremopores. The apertura is as high as wide; the rimule 

 is wide, rounded, little deep. The ovicell is globular, hyperstomial. There are 

 generally two small triangular avicularia with very salient beak placed on each side 

 of the apertura. 



Measurements. — ^Apertura L " ',„ ' ™™' Zooecia! /"„' ™°^" 



lZa = 0.10mm. lZz = 0.24mm. 



Affinities. — This spe ies has much resemblance to Schizopodrella patagonica 

 Waters, 1905, in the arrangement of its* avicularia; it differs from it in its larger 

 avicularia, placed lower, salient and always inclined toward the aperture. The 

 zooecia, although usually plain, are sometimes margined by a slightly salient thread. 



Occurrence. — Miocene (Choctowhatchee marl): Jackson Bluff, Ocklockonee 

 River, 25 miles southwest of Tallahassee, Florida (rare). 



Holotype.—Cht. No. 68568, U.S.N.M. 



