926 



P. T. CLEVE. S. ATLANTIC PLANKTON. 



Dinophysis VanhÖffenii OsTF. var.? Sparingly in almost all 

 samples from åV S. 6° W. to 36° S. 89^ E. — Fig. 8. 



Fig. 7. 500 t. m. 



Fig. 8. 



a. Specimen from 42° S. 3° W. 



b. Specimen from Davis's strait. 



500 t. m. 



This form is smaller and has not such coarse areolation as 

 the typical form (or D. no7'vegica Clap. & Lachm. according to 

 Jöröensen). It agrees better with D. acuminata{ChKV. & Lachm.?) 

 Jörgens. Exactly the same form occurs in the Arctic Sea. 



Diplopsalis lenticuLi Bergh. was seen very rarely at 37° — 

 39'^ S. 28—17^ W.and at 43° S. 57° E. 



Crymnaster pentasterias (Ehe.) Schutt. (Ergebnisse d. Plank- 

 ton-Exp. Peridinéen PI. XXVII f. 100, 3). Sparingly in samples 

 collected between 42° S. 3° W. and 44° S. 41'^ E. 



Oxytoxum scolopax Stein. This species, which occurs on 

 the northern hemisphere in desmo-plankton aud frequently in the 

 styli-plankton of the temperate Atlantic as far as to Bergen, was 

 met with very sparingly at 36°— 37° S. 24°— 23° W., at 45° S. 

 29° E. and from 43° S. 71° E. to 34° S. 89° E. 



Peridinium diabolus Cl. (K. Sv. Vet. Akad. Handl. XXXIV 

 N. 1 p. 16 PI. VII f. 19, 20) was found sparingly in most 

 samples from 41 S. 6° W. to 39 S. 85° E. — It occurs in 

 the northern hemisphere in the styli-plankton of the temperate 

 Atlantic. 



Peridinium Michaelis Ehe. was found sparingly at 36° S. 

 24° W. and from 42° S. 76° E. to 34° S. 89° E. 



Peridinium oceanicum Vanh. (Cl. K. Sv. Vet. Akad, Haudl. 

 XXXIV N. 1. p. 17 PI. VII f. 17, 18) was found in almost 



