GULF OP MEXICO 



433 



to be widely distributed throughout the Southern 

 Hemisphere. 



Macrocypris tumida Brady, 1880 



Shells of this species were taken at between 

 1,400 and 1,800 meters depth nearly due east of 

 Brownsville. The species is also known from 

 somewhat shallower depths off the Kerguelens 

 (50 meters). New Zealand (357 meters), and the 

 southern coast of Norway. 



Macrocypris maculata (Brady, 1856) 



Shells of this ostracod were recovered from 

 depths of between 57 and 1,720 meters at a num- 

 ber of stations in the northwest region of the 

 Gulf. This species has been reported from the 

 West Indies, the Caribbean, and Cejdon. 



Macrocypris similis Brady, 1880 



Shells were collected from bottom samples, at 

 depths of 33 to 144 meters, taken off Galveston. 

 Distribution includes the east coast of South 

 America, Ascension Island (at a depth of 290- 

 1,235 meters), and the coast of Ceylon. 



Macrocypris africana Miiller, 1908 



Three females belonging to this species were 

 collected in an otter trawl haul at depths of be- 

 tween 20 and 22 meters off the Tortugas. This 

 ostracod was originally described from the coast 

 of South Africa. 



Macrocypris schmitti Tressler, 1949 



Eight females were taken from cracked-up 

 rock in shallow water on the west side of Logger- 

 head Key, Tortugas. This species is unknown 

 except from this region. 



Family NESIDEA 

 Bairdia coronata Brady, 1870 



This doubtful form was described from speci- 

 mens obtained oflF Veracruz in 1870 by G. S. Brady. 



Nesidea ovata (Bosquet, 1853) 



Shells of this bottom-dwelling ostracod were 

 found in bottom samples takeu in 1,810 meters of 

 water a little north of due east from Brownsville. 

 It has been reported from South Africa. 



Nesidea victrix (Brady, 1869) 



Shells of this species were collected at various 

 stations in the northwest portion of the Gulf by 



Rothwell at depths ranging from 190 to 2,395 

 meters. It has been reported from the West 

 Indies, the Caribbean (off Colon), the coast of 

 north Brazil, and the west coast of North Africa. 



Nesidea cushmani Tressler, 1949 



Several females were collected at depths of from 

 4 to 22 meters off Tortugas. This is the sole 

 record of this species at the preseat time. 



Nesidea atnygdaloides (Brady, 1866) 



Brady reported this species from the Gulf of 

 Mexico off Veracruz years ago. It is also known 

 from the Australian coast, Cuba, Cocos Islands, 

 New Caledonia, and the southern coast of Norway. 



Bythocypris bosquetiana (Brady, 1866) 



Species of this genus are bottom-dwelling. B. 

 bosquetiana has been reported from the presence 

 of shells at depths of 1,253 to 2,523 meters iu the 

 region east of Brownsville. Its distribution in- 

 cludes the West Indies, Atlantic Ocean, the Medi- 

 terranean, and Bass Straits (1,270 meters depth). 



Bythocypris compressa Brady, 1880 



Shells of this species were taken at depths vary- 

 ing from 66 to 1,920 meters at various locations 

 in the northwest portion of the Gulf from Browns- 

 ville, the Sigsbee Deep, and as far as the mouth 

 of the Mississippi River. This species had pre- 

 viously been reported from the South Pacific. 



Family CYTHERIDAE 

 Bythocythere turgida Sars, 1866 



Shells of this species, which is also bottom- 

 dwelling, were obtained at depths of between 108 

 and 1,372 meters south of Atchafalaya Bay. It 

 is known from the coast of Norway and the Gulf 

 of Biscay. 



Pseudocythere caudata Sars, 1866 



This easily recognized and widely distributed 

 ostracod was reported present (shells only) by 

 Rothwell in samples taken at between 310 and 

 1,372 meters in the area south of Atchafalaya Bay. 

 Its distribution includes the North Atlantic, Franz 

 Joseph Land, coast of Norway, Mediterranean, 

 the Kerguelens, and Prince Edward Island. 



Cytherura lineata Brady, 1867 



Numerous shells of this bottom-dwelling species 

 were collected at various stations throughout the 



