28 ALLAN HANCOCK ATLANTIC EXPEDITION REPORT 



Family HippOthoidae Levinsen 1909 



Genus HIPPOTHOA Lamouroux 1821 



Hippothoa flagellum Manzoni, 1871 



Osburn 1914: 198 (H. distans); 1940: 408 (H. distans). 



This is a very widely distributed species. Recorded by Osburn from 

 the Tortugas Islands, Florida, and off Guanica Harbor, Porto Rico. It 

 is very small, forming a delicate traceiy on the surface of shells and is 

 readily overlooked. 



Distribution. — Station A14-39, 2 miles SW of Cape la Vela, Colom- 

 bia at 21 to 22 fms. 



TRYPOSTEGA Levinsen 1909 

 Trypostega venusta (Norman), 1864 



Smitt 1873:61 (Lepralia inornata, non Gabb and Hornj; and p. 37 

 (Gemellipora glabra forma striatula). Osburn 1914:198; 1940:409. 

 Canu and Bassler 1928: 77. Marcus 1938: 35. 



Widely distributed around the world. Smitt listed it for Florida; 

 Osburn for the Tortugas Islands, Florida, and Porto Rico; Canu and 

 Bassler for the Gulf of Mexico, Florida Straits and north of Cuba, and 

 Marcus has found it as far south as Santos Bay, Brazil. 



Distribution. — Stations A18-39, At502, At503, and At505. These 

 stations place the locations at Aruba Island and Cape la Vela, Colombia 

 at 10 to 24 fms. 



Family SchizOpOrelHdae Bassler 1935 

 Subfamily Schizoporellinae Bassler 1935 

 Genus SGHIZOPORELLA Hincks 1877 

 Schizoporella unicornis (Johnston), 1847 



Smitt 1873:44 (Hippothoa isabelleana). Osburn 1914:205; 1927: 126 

 (Schizopodrella); 1940: 419. Canu and Bassler 1928: 97 (Schizopodrella 

 isabelleana). 



A widely distributed species, usually abundant along the eastern coast 

 of the Americas from Nova Scotia to Brazil, with numerous variations. 

 Smitt listed it for Florida; Osburn for the Tortugas Islands, Florida, 

 Curagao and Porto Rico; Canu and Bassler for the Gulf of Mexico and 

 the Island of St. Thomas. 



Distribution. — Station A42-39, Margarita Island at 18 fms and At 

 502, 1 mile SW of Cape la Vela, Colombia at 13 fms. 



