32 CLEVE, PLANKTON FROM TIIE INDIAN OCEAN AND THR MALAY ARCHIPELAGO. 



Lampriscus {Triceratium) orbiculatus Shadb. {Tric. Shadholtianum Grev.). Billiton, 

 Seinau Soiind, Lombok Sound, Bali Sound, Sumba c. 



Glyphogoniiim {Triceratium) sculptum. Shadb. Java c. 



Eugonimu (Biddulphia) Titianum Grun. {Bidd. membranacea Cl.). Billiton, Lombok 

 Sound, Semau Sound, Mendanao, Gaspar Sound c. 



The chromatophores are very small and scattered in the peripherical parts of the 

 cellula. Nucleus central. 



E. {Triceratium) forinosum Btw. Timor, Bali Sound, Lombok Sound, Semau 

 Sound, Java c. 



E. {Triceratium) Frauenfeldii Grun. Java r. 



E. {Triceratium) latum Grev. (probably a variety of the preceding). Java -f-. 



E. {Triceraiium) crux Btw. {Tric. zonulatum. Grev., Amp/dtetras parvula Jan. & 

 Rabii., Tric. celebe7i.se A. S.). Java r. 



E. {Triceratium) sculptum. Shadb. Billiton, Bali Sound, Java r. 



Hiittonia {Cerataulus) labuensis Cl. Billiton rr. 



('ei"ataiilus turgidus E. Bali Sound r. 



Auliscus .^culptus W. Sm. Billiton, Bali Sound r. 



Aiilacodiscus oinentali^ Grev. Bali Sound r. 



A. margaritaceus Ralfs. Bali Sound r. 



Roperia tessellata (Rop.) Grun. Bali Sound rr. This species was also found in the 

 Arabian Sea (11° N. 5 T E.). 



Åctinocyclus appendiculatus (Grun.) Rattr. Semau Sound, Bali Sound rr. 



A. Ehrenbergii Ralfs. Billiton, Bali Sound, Java -f-. 



A. moniliformis Ralfs. Billiton, Java r. 



A. tenuissimus Cl. Java. r. 



A. {Coscinodiscus) curvatuhts Grun. Java rr. 



Coscinodiscus Bothii (Ehb.) Grun. Java c. This form scarcely difters from C. de- 

 narius A. S., the marginal small nodules not being always present. C. Norma7ii Greg. 

 probably also belongs to this species. 



C. nitidus Greg. Bali Sound, Java r. 



C. ociilus iridis Ehb. Java r. 



C. nodulifer Janisch. Java c. f , i ' .•; 



Emlictya oceanicct Ehb. Java r. 'i ■!;!.[,■, 



-v var. minor A. S. Java -f-. : i\ , ii;.').; i.. , 



Pyxidicula ci^uciata Ehb. Java r. 



Actinoptychus iiexagonus Grun. Bali Sound rr. • . ■ ' 



A. triiingulatus Pritch. Bali Sound, Java -f-. ■ ... i . 



A. vidgaris (Schum.) Grun. Bali Sound, Java r. 



A. undulatus Ralfs. Java -|-. . , .■,,'- 



