BYTHEEEV. J. E. TENISON- WOODS, F.G.S., F.L.S., ETC. 127 



aticus, and amid the basaltic rocks of Island Point, Stomopneustes 

 atra-purpurea, mihi, but as I intend to give a separate paper on 

 the EcMni of this part of the coast and their various habits I shall 

 not refer to them further at present. 



In all the rock pools fishes of some sort are found. It would 

 be useless to attempt an enumeration, but I may mention especially 

 the striped Murmna nehulosa, and the immense number of young 

 dog-fish or sharks of the genus. Occasionally large specimens of 

 Conger marginatus, Forsk., may be seen floundering through the 

 rock pools. 



On nearly all the reefs visited by me I found large shallow 

 pools from two to three feet deep at low water, in which there 

 was an extensive growth of coral. The genera were mostly the 

 solid corals, such as Solenastr<sa, Favia, Prionastrcea, Pavonia, 

 PlesiastrcBa, Astrcba (raYe)Meandrina, Mussa, Symphyllia, Sydnophora 

 Galaxea, Turhinaria, Fungia, Pachyseris, Turhinaria, Pocillopora, 

 Seriotopora, Psammocora^ Millepora, Heliopora, Madrepora, Sfc. 1 

 think that a good many of these are of undescribed species, but 

 the resemblances to known forms are so close that a very careful 

 examination and comparison with typical forms will be necessary 

 before any specific determination is made. Madrepores were 

 common in places, but confined to two or three species. I intend 

 to publish in a separate paper what I have to say in detail about 

 the corals. I may remark now that in the pools and lagoons to 

 which I am referring, branched corals were the exception. The 

 common forms were large hemispherical masses or large round 

 flattened slabs like tables. These were for the most part species 

 of Porites or Aheopora. The flat upper surface was dead and like 

 brown concrete. The thick rounded edge was of rose-pink color 

 generally, and only this part was alive. The cells of this species 

 are so small that the stellate rays can only be seen by a good lens. 

 When undisturbed a kind of tentacular expansion could be 

 observed, a constant movement such as would be caused by the 

 water. A touch of any foreign substance, or a blow caused them 



