1038 CLEVE, P. T., PLANKTON FROM THE RED SEA. 



Pleiiromma abdominale (LuBB.). This species has been found 

 in the Indian, Pacific, Mediterraneau and the Atlantic (16° — 

 49° N.). I found it very sparingiy in sampies frora the Malay 

 Archipelago. 



Sappliirhia iiigro-maculata Claus. Found in the Mediter- 

 ranean and the Pacific (20° N.— 64° S.). I noted it from the 

 Malay Archipelago and the Atlantic (G° S. to 49° N.). 



Sclimackeria salina GiESBR., not found outside the Red Sea. 



Scolecithrix clielifer GiESBR.^ not found outside the Red Sea. 



Setella gracilis Dana. 1 noted this species from the Ara- 

 bian Sea, the Indian Ocean and the Malay Archipelago. It is 

 common in the whole tropical Atlantic. 



