AMOUROUCIUM. 001 



Genus AMOUROUCIUM, Milne-Edwards. 



Test fleshy or coriaceous, incrusting, sessile or peduncu- 

 lated, polymorphous ; systems numerous, each with a cen- 

 tral cavity. Individuals grouped at unequal distances round 

 the common centre; anal orifice opening into a common 

 cloaca, branchial orifice six-rayed; abdominal divisions 

 indistinct. 



Syn. Polycitor, part, Benieri. 



Ex. A. Argus, Milne-Edwards, pi. 135, fig. 1. Indivi- 

 dual, A. Argus, fig. 1, a. 



This genus resembles Aplidium and Synoicum in the 

 general form of the animal, and Polyclinum in the presence 

 of a central common cavity to each system. 



Species of Amour oucium. 



Argus, Milne-Edw. Nordinanni, Low. and Kolliker. 



conicurn, Renieri. pomum, Sav. 



incrustatum, Sav. proliferum, Milne-Edw. 

 mutabile, Sav. 



Sub-gen. parascidium, Milne-Edwards. 



Oral openings eigbt-lobed, each accompanied by4\vo oculiform 

 points. 



fiavum, Milne-Edw. 



