CHARACTERISTIC DEEP-SEA TYPES. — CORALS. 153 
The Fungido are a very characteristic shallow-water form in 
. o . e LI . 
the Pacific, and it is interesting to note that from deep water 
Fig. 474. — Axohelia mirabilis. 4. (Pourtales.) Fig. 475. — Thecopsammia socialis. 
15. (Pourtales.) 
the dredge has brought up three small, simple species, the first 
simple Fungia found in our seas. Of these 
we may mention Fungia symmetrica (Fig.. 
476), found by the dredgings of the “ Chal- 
lenger" to be one of the most common deep- 
sea corals. It has a world-wide distribution ; 
it oceurs in the West and South Atlantic, and 
in the North and South Pacific, and has a very 
extended bathymetrieal range; it has been 
dredged by the “ Challenger” in 30 fathoms 
Fig. 476. — Fungia 
symmetriea. È. 
(Pourtalès. ) 
and in 2,900 fathoms, and in all inter- 
mediate depths. The range of tem- 
perature which it sustains varies from 
1° to 20° C. It has been found by 
the “Blake” ranging from 175 to 
Fig. 477. — Diaseris erispa. f. 800 fathoms, in the Gulf of Mexico, 
(Pourtalòs.) 
the Straits of Florida, and the Carib- 
