The Siboga expedition collected 56 complete specimens, 4 loose bracts and 2 loose 

 special nectophores. It is useless to give any detailed description as Chun gave a very clear 

 one of the special nectophores, the stem and its appendages and our specimens do not differ 

 in the essential points from the Atlantic Ersaea Bojani. 



Figg. 2 — 6. Gradual transitions from the Ersaea pk/a-lype of phyllocysts into the Ersaea io/ani-type after specimens of 

 Ersaea hojani Huxl. in the Siboga material. {Cat. 42 E. 42 E, 172 E. 42 E. 134 M) 10 X- 



We have spoken about the slow graduation from the Ersaea picta to the Ersaea Bojani- 

 type in the phyllocyst, as is also shown in figg. 2 — 6 of the text. We may only just add that 

 the serration of the outer wall of the bract shows so many variations that it is absolutely useless 

 to give a description of these sixty bracts. 



Halopyramis Chun. 

 \. Halopyramis adainantiiia Ch. 



= ? EnneagoniDii Q. et G. 27. 



= r Diphyes Q. et G. 33. 



= ? Cymba Eschsch. 29. 



= EnneagonHin de Bl. 34. 



= Enneagonuin Less. 43. 



= Abyla Huxl. 59. 



= Cymba crystallus Hkl. 88 « and 88 (^. 



= Halopyramis adamantina Ch. 88 and 92. 



Stat. 89. Pulu Kaniungan Ketjil. Cat. 48 C. formald. 4°/^. One specimen. 



Stat. 106. Anchorage of Kapul-island, Sulu-Archipelago. Cat. 91 A. formald. 47o. 2 specimens. 



Stat. 141. Lat. i°o.4S., Long. I27°2s'.3 E. Cat. 44 F. A. formald. 4%. 3 specimens. 



Stat. 144. Anchorage North of Salomakie-(Damar-)island. Cat. 122 L formald. 4°^^. One 



specimen. 

 Stat. 2io\ Lat. 5°26'S., Long. 121° iSE. Cat. 139. ale. 90°/^,. One specimen. 



