APPENDIX. 385 



yellowish. Tufts loose ; ovicell small in proportion to the 

 size of the cells. It is placed immediately above and 

 behind the upper margin of the opening of the ceU to 

 which it belongs. 



Suborder III. CTENOSOMATA. 



Pam. 1. VESICULARIAD^. CeUs tubular, horny. 



24. Amathia, Lamoaroux. 



1. A. biseriata, Krauss. Corall. der Siidsee, p. 23. 

 Fig. I. a. b. c. 



Hab. — Swan Island, Banks Strait. 



The biserial arrangement of the cells is not a sufficient 

 character, because in Amathia cornuta (Lamouroiix), the 

 cells are also biserial as well as iu another South African 

 species, very like the Australian form probably intended 

 by Krauss, but apparently different from it. In the South 

 African form the cells are shorter, narrower, and more cylin- 

 drical, and the branches are terminated by two lanceolate 

 tags, which are not present in the Australian species, in 

 which latter the cells also are wider, longer, and prismatic, 

 or subhexagonal, with very thin walls. 



SERTULARIAN ZOOPHYTES. 



The number of species of Sertularian Zoophytes com- 

 prised in this collection amounts to thirty-one, belonging 

 to five genera, all of which appear to be common to both 

 the Northern and Southern hemispheres ; and four are 

 European types. The fifth, Pasythea, is stated by La- 

 mouroux, to be found on Fucus natans and in the West 



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