DIXOFLAGELLAT.E — PHAL.VC.ROMA 271 



April: 12'' N. 51° W.; Caribbean Sea; Ifr N. 5(r W. to.2(V" 



N. -13'' W.; :'.i)" N. 23- \\. to 44° N. 20" \V. 

 May: Caribbean Sea; 16^ N. 5(i- W. to 32- N. 1/2' W.; 38' 



N. 21° W. to 41° N. IH' W. 

 Jiirtc: 31° N. 17=' W.; 19" N. 63' W.; 48" N. 33' W. 

 Jidti: Caribbean Sea; 29° N. 71 W.; 41° N. 58° W.; 2()^ N 



48° W. to 3()" N. 28' W.; 41' X. 58' \\'. 

 August: 22'~30' N. 74' W.; id' N. (i7' W to W N. 58° W. 



Azores. 

 Srpii'iuhi'/-: Azores; 41° N. iifr W.; 57' N. 14' W. 

 October: Azores; 42' X. 57" W. 

 Xovrinbpr: 8- X. 28' W.; 13- N. 27' W.; 29' N. 19" W.; 34- 



X. 10- W.; Azores; 48' N. 29' W 

 Jji'i-i'/nber: Azores. 

 1899 January: Canaries; Madeira to 35' N. 9' W. 

 Ma/-ch: Azores. 



Junr: 12' S. 9' W.; 9 X. 25- W.; 27' N. 39- W. 

 July: 11°— 12- X. 20 —27' W. 



Temperature: 22, mean of 55 obs., max. 28. i, min. 14. i. 

 Salinity: 35.9c., mean of 41 obs., max. SB.is, min. 33.s8. 

 Plankton- type. Tliis species occurs in the Mediterranean, the 

 Red Sea, the Indian Ocean and the Pacific. — J). 



PHALACROMA HINDMARCHII JIurr. c^- Whitt. 

 (Trans. Linn. Soc. Lond. 2:nd Ser. Bot. Vol. V part. 9 PI. XXXI fig. o.') 



1897 Drcr/ulM'r: 29' X. 36" W. 



1898 February: 25"— 28° N. 44'— 39' W. 

 Ala/-r/r. 14'— 16" X, ()4°— 68" W. 

 April: 19"— 22' X. 52'— 17° W. 

 Jily: 24' X. 54° W.; 29°N. 74' W. 

 Auyust: 25' X. 71' VV.; 44° N. 41° AV. 

 Ormhcr: 34° N. 74° W. 



Xni-cnhcr: 22° N. 53° W.; 26" N. 48° W. 

 Ih'c'iubrr 18' N. 67° W. 



Tlie punctation of the membrane is much to coarse on tlie figure quoted. 



