288 DIATOMAC.E/'E — BIDnULPHIA, CERATAULIXA 



BIDDULPHIA CHINENSIS (iREv. 



(T. Micr. Soc. Vol. XIV. isai; I'l. IX fig. 16.} 



1898 March: T N. 55' W. 



Jiiiir: 10' N. 53° W. 



Temperature: 2().i. to 27. -. 



Salinity: 06.01. 



Plankton-type. Occurs in the Gulf of Bengal, at .lava, Hongkon,ii, 

 Jedo Fiay (Japan). Tropical neritic form — Nr. 



BIDDULPHIA MOBILENSIS (Bail). 

 (V.\N Helrck Syn. PI. CI fig. 4-6.; 



1898 January: 21' N. 17' W.; 48° N. 6' W. 

 Ma7rh\ 49' N. 2' W.; 62° N. 2° E. 

 April: 60' N. 4'— 2° W. 



August: Azores; 55° N. 5° W. 

 October: Azores; 42° N. 50° W. 

 November: 60" N. 4° W. 



1899 ApjHl: 49° N. 7° W. 



Temperature: 14. i, mean of 9 obs., max. 2o.t, min. 6. 



Salinity: 34.94, mean of 7 obs., max. 36.2,5, min. 32. 51. 



Plankton-type. This species is evidently a neritic form, which 

 occurs only exceptionally in the oceans. It abounds round the British 

 Islands. Schroder mentions it from Naples. — Xni. 



CERATAULINA BERGONII 11. Peragollo.^ 



(Diatomisto I>1. XIII fig. 15, J6. — Ci.. Bih. Kougl. Sv. Veten.sk. Akad. Ilandl. Vol. 



XX 3. PI. I. fig. 6.) 



1898 Jaiiuunj: 7° N. 53° \V. 



March: 7° N. 55° W.; 36° N. 29° W.; 45° N. 36 W.; 43° N. 



49° W. 

 April: 47'— 48" N. 40'— 33° W. 



' OslenfelcVs data used. 



