12 CLEVE, PLANKTON FKOM THE INPIAN OCEAN AND THE MALAY ARCHIPELAGO. 



Sphserozomu punctatum J. Mull. Arabian Sea, 13° N. 52° E. (t. 25, i; s. 36, 20). 

 Malay Archij)., July, -|- (t. 25,6 to 25,7; s. 33,64 to 33, so). 



Spongosphsera streptacautha Hkl. Malay Archip., Sumba, June rr. (t. 26,8; s. 33, 71). 



Tessaraspis arachnoides Hkl., Arabian Sea, 11° N. 62° E. {t. 26,35; s. 36, 01). 



Tlieocoiuis zancleus (J. Mull.) Lidian Ocean, yl9°— 8° S. 90°— 88° E., rr. {t. 26,2 

 to 29,2; s. 34,22 to 34,77). 



Theopilhiin tricostatum Hkl. Malay Archip., Bali Sound, May, rr. (t. 25,5; 

 s. 32,94). 



Triastrum Aurivillii Cl. Malay Archip., Bali Sound, May rr. {t. 25,5; s. 32,94). 



Zygocircus productus (Hertw.). Indian Ocean, 6° S. 89° E. (t. 31,2; s. 34,76). 3fa- 

 lay Archip)., Bali Sound, May, rr. {t. 25,5; s. 32,94). 



Rliizopoda. 



Cymbalopora buUoides d'Oeb. Malay Archip., July, September, c. in some samples 

 {t. 28, mean of 5 obs. max. 28, so, min. 25,7; s. 32,4o, max. 33,76, min. 31,62). 



CfloMgerina buUoides d'Orb. S. Indian Ocean, 44° S. 41° E. r. {t. 6,5; s. 33,92). 



Cystoflagellata. 



■''^". Noctiluca miliaris Surir. Malay Archip., Surabava, June, very common. 



Silicoflagellata. 



Dictyoclia fibxila Ehb. Arabian Sea, 11° — 9° N. 51° — 59° E. r. S. Indian Ocean, 

 December, January not rare from 45° S. 22° E. to 42° S. 76° E. and at 32° S. 91° E. 

 {t. 10,1, mean of 9 obs. max. 21, min 6,8; s. 34,57, max. 35,75, min. 34, 07). Malay Ar- 

 chip. May, June, August, rr. 



Distephamis speculum Ehb. 8. Indian Ocean, December, January rare to common 

 from 45° S. 22° E. to 43° S. 73° E. and at 34°— 33° S. 89°— 90° E. {t. 9, mean of 11 obs. 

 max. 19,8, min. 6,4; s. 34,53, max, 35, 71, min. 33,92). Malay Archip). June rr. 



Chlorophyllacese. 



Halospliaera viridis Schmitz. Arabian Sea, 9° N. 59° E., r. Indian Ocean, 

 3°N. 86° E., rr. 



■ - Cyanopliycese. 



Trk-.hodesmiiim erytliraeum Ehb. Indian Ocean, E. of Minicoi (Maldives), March, 

 cc. colouring the sea for great distances; 8°N. 75° E. {t. 28,2; s. 34,4o). Malay Archip., 

 Timor, July, {t. 25,7; 5. 33, so). 



