APPENDIX. 365 



resembling very closely an antique sculptiired urn. 

 Colour dark brownj and the walls so thick as to be nearly 

 opaque. The polyzoary, which appears to attain a height 

 of four or five inches^ is bipinuate (with all the branches 

 on one plane), the branches alternate, and given ofi' with 

 extreme regularity. The ultimate ramules are incurved. 

 The whole forms a very elegant object. The central stem, 

 or series of cells, differs in no respect as regards the size 

 or disposition of the cells composing it, from the branches. 



Fam. 2. EUCRATIADiE. 



7. EucRATEA, Lamouroux. 



1. Eucratea chelala, Lamouroux. 

 Hab. — Bass Strait, 45 fathoms. 



In all respects identical with the British form. It also 

 occurs at Port Adelaide. 



8. Anguinaeia. Lamarck. 



\. A. spatulata, Lamarck. 

 ^tea anguina, Lamouroux. 



Hab. — Bass Strait, and other localities. 



This species (which appears to be pretty generally dis- 

 tributed over the globe) is identical with the European 

 form. It is to be remarked, however, that a second species 

 {A. dilatata, Busk. Ann. Nat. Hist. 2nd Ser. vol. 7, P- 81, 

 pi. 9, fig. 14) is found in Torres Strait, but which does 

 not occur in the Rattlesnake collection. 



§. 2. Multiserialaria. Cells disposed alternately in a 

 double or multiple series. 



1. Articulata. Polyzoaxy divided into distinct inter- 

 nodes by flexible articulations. 



a. Intemodes elongated, or composed of numerous cells. 



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