328 DR. G. J. HINDE. 



also present in the Lagoon Boring-. Mr. J. S. Gardiner* states that it is fairlv 

 abundant in the lagoon at Funafuti. 



Genus Montipora, Quoy and Gaimard. 



This genus is represented in all the borings, usually in the form of undulating 



layers of varying thickness, which grow horizontally over the surfaces of other corals. 



It occurs very sparsely in tho Mtiin Boring to the level of 775 feet ; below this it is 



somewhat more frequent, but not sufficiently well preserved for specific identification. 



Six recent species are recort^ed by J. S. GARUfNERf from the lagoon and outer reef 



at Funafuti. 



Genus Porites, Lam. 



Next after Madi'cpora, this genus is the most abundant of the corals in the 

 Funafuti borings. It is met with throughout the Main Boring, but sparsely and at 

 long intervals till reaching the level of 645 feet. From 870 feet to the bottom of 

 the boi-ing it is generally present ; some of the cores principally consist of it, 

 apparently in its position of growi:h. The largest massive specimen found, at 970 feet 

 from the surface, has a vertical diameter of 325 millims. (13 inches). Only one 

 species, P. arrnosa, Esper, has been identified. Porites is also present in the Second 

 Boring (D) and in the lower part of the Lagoon Boring. Mr. J. S. Gardiner^ has 

 described eight recent species and varieties of this genus (including P. arenosa), most 

 of them new forms ; with one exception these lived on the shoals of the lagoon at 

 Funafuti. 



Genus Goniopora, Quoy and Gaimard. 



Fragments of this genus have been met with in the lower part of the Lagoon 

 Boring. It has not been found in the other borings, nor has it been noticed in the 

 recent fuima of Funafuti. 



Undetermined Corals. 



In addition to the above, there are many casts of corals in the cores, more 

 particularly in those from the lower part of the Main Boring, the condition of which 

 is so unfavourable, owing to dolomitisation and other causes, that their generic 

 characters could not be determined. All that can be distinguished is whether they 

 are aporose or perforate forms, 



(7c) Notes on Various Organisms and on Calcareous Alg^ from the 



Funafuti Borings. 



Sponges. 



No specimens of either siliceous or calcisponges have been noticed in the boring 

 materials, but siliceous boring sponges belonging to Cliona and allied genera must 



* ' Zool. Soc. Proc.,' 1898, p. 263. 

 t Ibid., pp. 265-267. 

 I Ibid., pp. 267-276. 



