I70 DISCOVERY REPORTS 



Gymnodinium (Pyrocystis) lunula f. globulus, Apstein. 

 Paulsen, 1908, p. no, fig. 152. 

 Also observed at two tropical stations. 



Gymnodinium spp. 



Observed at one tropical station. The "red-water" sometimes seen near the Cape of 

 Good Hope is probably due to vast swarms of this genus. 



Family NOCTILUCIDAE, Saville Kent 

 Genus Noctiluca, Suriray 



Noctiluca scintillans, Macartney. 

 Lebour, 1925, p. 69, fig. 17. 

 Observed in small numbers at tropical stations between 15^° S and 14!° N on the 

 30th meridian, also in water of the Benguela current of Saldanha Bay. 



Family DINOPHYSIDAE, Kofoid and Michener 

 Genus Phalacroma, Stein 



Phalacroma minutum, Cleve. 

 Lebour, 1925, p. 78, fig. 20 d. 

 Observed at the two most northerly tropical stations in 30° W long. 



Phalacroma rudgei, Murr. and Whitt. 

 Paulsen, 1908, p. 20, fig. 22, 

 At one tropical station north of the Equator. 



Genus Dinophysis, Ehrenberg 



Dinophysis ellipsoidea, Mangin. 



Mangin, 1922, p. 72, fig. 15. 

 Noted at one station far south in the Weddell Sea. 



Dinophysis ovum, Schiitt. 

 Paulsen, 1908, p. 17, fig. 16. 

 Observed at several stations in the Bellingshausen Sea: probably many of the 

 Dinophysis spp. recorded in the Antarctic Zone should be referred to this species. 



Dinophysis rotundata, Clap, und Lachm. 

 Paulsen, 1908, p. 17, fig. 18. 

 At a few stations in the Bellingshausen Sea. 



Dinophysis schuettii, Murr. and Whitt. 

 Paulsen, 1908, p. 18, fig. 19. 

 Observed at one tropical station on the homeward voyage. 



