NO. 5 OSBURN: BRYOZOA 39 



Family Reteporidae Smitt 1867 

 Genus SERTELLA Jullien 1903 

 Sertella marsupiata (Smitt), 1873 



Smitt 1873:67 (Retepora). Osburn 1914:200 (Retepora); 1940:441 

 (Reteporellina). Canu and Bassler 1928: 122 (Retepora). 



Harmer, in his splendid review of the Reteporidae of the Siboga 

 Expedition (1934:571) places this species under 5er/^//a (see discussion 

 of S. suluensis) . 



Smitt recorded it from Florida, 16 to 26 fathoms; Osburn from the 

 Tortugas Islands and south of Porto Rico; Canu and Bassler from the 

 Gulf of Mexico southwest of Florida and the Caribbean Sea at 683 

 fathoms. 



Distribution.— ^t2inon% A14-39, At503, At526, At527 and At529. 

 These stations place the locations at Cape la Vela, Colombia; Tortuga 

 Island and the Gulf of Venezuela at 10 to 41 fms. 



Genus RETEPORA Lamarck 1801 

 Retepora prominens (Canu and Bassler), 1928 



Canu and Bassler 1928: 124 (Reteporella prominens). 



The authors of this species were uncertain as to the generic relation- 

 ships of this species, due to the inability to determine certain essential 

 characters. In the present collection the few small fragments add nothmg 

 to our knowledge, though they agree with the description. In his revision 

 of the Reteporellidae, Harmer (1934) regards the old genus Retepora 

 as a catch-all for the inclusion of species of uncertain relationships and I 

 am following him in removing the above species from Reteporella until 

 more is known about it. 



Distribution. — Station A42-39, 4 miles N of Margarita Island at 21- 

 22 fms. 



Genus RHYNGHOZOON Hincks 1877 

 Rhynchozoon tuberculatum Osburn, 1914 



Osburn 1914:200; 1927:130; 1940:442. 



The colonies are all small and inconspicuous, usually encrusting on 

 the flat surfaces of shells. The species is probably well distributed 

 throughout the West Indian region as Osburn has recorded it from the 

 Tortugas Islands, Florida, Curagao Island, and Porto Rico, from shal- 

 low water to a depth of 1 8 fathoms. 



Canu and Bassler (1923: 157) have described R. levigatiim from the 



