REPORT ON MATERIALS FROM THE BORINGS AT FUNAFUTI ATOLL. 

 List of Genera and Species of Corals — continued. 



321 



Families. 



Genera and species. 



Range in feet from surface. 



Range iu 



feet from 



lagoon 



floor. 



Lagoon 



Boring, L. 



JNIain 

 Boring. 



First 



Boring, 



C. 



Second 



Boring, 



D. 



xAlAE 



Fungidse . . . 

 ,, ... 

 Lophoseridse 



!! 

 )) 



Madt 



jMadreporiclse . 



J) 

 )) 



Poritidse . . . 

 ,, ... 



I! ... 



REPOUARIA FUNGIDA. 



Sideradnea, Blainv 



Fungia, Dana 



Halomitra, Dana 



Cydoserifi, M.-Ed. and H 



„ cf. cydolites, Lam. . . . 

 Psammoc&i-a, Dana 



L.EPORARIA Perforata. 



Madrepora, Linn 



,, conteda, sp. n 



Turbinaria, Oken 



Astrceo])(rfa, Blainv 



Montipai-a, QuOY and Gaimard. . 



Pontes, Lam 



,, arenosa, EsPER 



Goniopm-a, QuoY and Gaim. . . . 



1019^-1110 

 100-1091 



530? 

 716-1075? 



736 

 973-1064 



1-1114 



2- 972 



652-1104 



88-1030 



30-1063 



9-1113 



782-1043 



80- 85 

 30 -50 



85 

 30- 105 



12-72 

 12-72 



12-72 

 40-60 



82-144 



35-144 

 103 



103-144 



106-144 



35-94 



112-144 



and they are all well-known genera of reef-building corals. Of the 28 genera 

 recorded from the borings, 22 are living at the present time on the reefs, or in the 

 lagoon at Funafuti ; the 6 genera not recognised as at present existing in the region 

 are Stylaster, Euphyllia, Galaxea, Siderastrcsa, Cycloseris, and Goniopora. The 

 range of depth in the borings of the different genera is very variable. The commoner 

 forms, such as Millepora, Lohophytum, Stylophoi-a, Pocillopora, Astrcea, Orhicella, 

 Fimgia, Madrep>ora, Astrceopora, Montipora, and Porites, range from the top to the 

 bottom of the Main Boring, but not continuously, for a particular form which has 

 flourished through a series of consecutive cores will often disappear altogether for a 

 variable interval, and then comes in again. The genera of comparatively rare 

 occurrence, such as Hydnopliora, Galaxea, Cyclose^'is, and Turbinia, are apparently 

 restricted to the lower third of the Main Boring. 



Hyd rocorallin^>. 



Genus Millepora, Linn. 



This genus is common in the Main Boring from the surface to the depth of 125 feet. 

 Between this level and 930 feet it has only been met with sporadically at very wide 

 intervals ; from 930 feet to the bottom of the boring it is again frequent. It is rare 



2 T 



