PLATE II. 
Fig. 1. A tubiporite agreeing with the fossil tubipore of Linnaeus, described as Tuhipora 
Strues, forming a lightish brown marble. 
2. Longitudinal section of the madreporean star. 
3. One of the feet, or rather arms, of the madreporean insect, described by Donati, 
as employed in forming its habitation, the madrepore. 
4. The whole animal ; its head being in the centre, surrounded by its numerous 
arms, which may be considered as the instruments with which the animal forms 
the lamellae of the madrepore. 
The three last figures are copied from a plate in Ellis’s Zoophytes, being there unde- 
scribed : no description of them having been found in the papers of Mr. Ellis. 
