— 13 — 



p. 161 ; Cleve, PI. f. the Iiid. Ocean and the Malay Archip. p. 23; Schroder, 

 Neapel p. 25; Lemmermann, I.e. p. 315. 



i>(r) - 3 (IT) - (3(r) - 7 (it) - 10 (+). 



Area: Northern Atlantic Ocean, especially in the North Sea and the Englisli 

 Channel, Mediterranean, Red Sea, Gplf of Aden, Malay Archipelago, China Sea, 

 Yeddo Bay, Cook Strasse (S. of New Zealand). — Neritic species. 



35. R. stj'liformls Btw., Micr. Journ. 1858, p. 06, PL 5, f. 5a,b,c,d; 

 VanHeurck, Synopsis PI. 78, f. 1 — 5, PL 79, f. 1,2,4; Peragallo, Monogr. 

 Rhiz. p. Ill, PL 4, L 1—5; Grunow, Novara Exp. 1870, p. 28 ; Cleve, 

 Dial. L the Sea of Java p. 1 1 ; All. PLankt. Organisms p. 349 ; PL L the 

 S. At). Ocean and the S. Ind. Ocean p. 935; PL f. the Red Sea p. 1034; 

 PL L the Ind. Ocean and the Malay Archip.; Leuduger-Fortmorel, L c. 

 p. 36; Lemmermann, I.e. p. 315 and p. 317; Schroder, Neapel p. 26. 



The type (about 25 // broad) is rather common in some samples, 

 but usually it is replaced by var. latissima, corresponding to the var. 

 incUca of B. alata, and var. cochlea of R. calcar a ins. 



10 (-f). 



Area: Most parts of the Atlantic Ocean, Mediterranean, Red Sea, Indian 

 Ocean, Malay Archipelago, Pacific Ocean, Antarctic Ocean. 



R. styliforniis Btw., var. latissima Btw., Microsc. Journ. PL 5, L 5 c; 

 R. styliformis var. ^^olydadyla (Castr.) Perag., Monogr. Rhiz. p. 11 1, PL 4. 

 f. 7; R. polijdactyla Castr., Challenger Report 

 p. 71, PL 24, f. 2; Rh. styliformis var. lata 

 Lenniiermann, I.e. p. 315 and 351. 



Differs only from tlie main species in 

 the size (about 60—70/^ broad). 



l(rr) - 4(rr) — 10(+). 



Area: Antarctic Ocean, Malay Archipelago, 

 French Pass at New Zealand. 



36. R. Teniperei Perag. , Diat. Ville- 

 franche p. 91, PL 5, f. 40, Monogr. Rhiz. 

 p. 1 10, P. 2, f. 3 ; Cleve, PL f. the Ind. Ocean 

 and tlie Malay Archip. p. 22. 



var. aruminata Perag., Monogr. Rhiz. p. 1 , 

 PL 3, f. 4 ; Schroder, Neapel p. 25, PL 1 , f . 6 

 (f. inaeqnalis); Cleve, AtL Plankt. Organisms 

 p. 336; Limmerm. 1. e. p. 317; R. rohusta 

 v. vpcta (nom. nud.) Ostenfeld, Vid. Medd. 

 Nath. For. Kjobenhavn, 1898, p. 427. ^ ^^j, ^^^ ^ ^,^^ ^^^^^^ ^,^^. 



Only the var. acuniinataVQVR%.\\?L'S jteen wing the form of the spine 

 found and I should think it to be a distinct {^)- 



Fig. 8. Rhizosolenia Temperei 

 Perag. var. acmninaia Parag. 

 a a whole cell (^r)- ^ part c)f 



1 



