58 
NATURAL HISTORY. [UPPER FLOOR. 
The reefs and islands* which are constantly forming in 
certain seas* especially the Pacific Ocean* are the work of 
the minute animals which inhabit these kinds of coral. 
Table Case No. 1* contains the following genera* belong- 
ing to the class Zoantharia:—Cyclolites, and Fungia. 
No. 2. Polyphyliia — Turbinoiia — Caryophyllia—Sar- 
cinula—Catenipora—Dendrophyllia* and Lobophyllia. 
No. 3. Meandrina* and Agaricia—a portion of the latter 
are in No. 4. 
No. 4. Tridacophyllia—Monticuiaria—and Pavonia. 
No. 5. Astreea* and Echinastraea. 
No. 6. Oculina—Dentipora—Astreopora* and Gem mi¬ 
nor a. 
No. 7 and part of 8* Madrepora. 
No. 8. Palmipora—Heliopora—Alveopora— Goniopora 
— Porites — Seriatopora — Pocillopora* and Anthopora 
{Gray). 
The animals of the class Polypiaria* differ from the Sea 
Anemones* and the Zoanthi, by the mouth being provided 
with only a single series of long tentacula* by the body 
being more slender* and by the cells which they form 
being quite simple* or without any radiating laminae. 
The genera belonging to the class Polypiaria are distri¬ 
buted as follows 
Table Case No. 9* contains the genera* Alveolites— 
Frondipora—Lichenopora—Polytrema—Orbitolites—Mar- 
ginopora —Distichopora—Hornera —Idmonea—Cricopora 
—Obelia —Tubulipora—Myriapora—Eschara—Adeone— 
Mesenteripora—Retepora — Ovulites —Cellepora—Bereni- 
cea—Discopora—Membranipora* and Lunulites. 
No. 10. Electra—r lustra-—Elzerina— Plierusa t—Cel- 
lari a—Canda— Caberea —Tricellaria—Achamarchis—Bi- 
cellaria — Crisia —Gemicellaria — Unicellar ia —Catenicella 
—Menipaea— Alecto — Anguinaria — Tibiana—Neomeris — 
Tubularia—Coryna —Campanularia—Laomedea—Seriola- 
ria—Plumularia* and Sertularia. 
No. 11. Biseriaria— Idia —Dynamena—Tuliparia—An- 
* On a Table, in front of the middle window, is a remarkably fine spe¬ 
cimen of the Meandrina cerebriformis, from Bermuda, presented by the 
late Dr. Jarvis, of Margate. 
f The Museum does not possess specimens of the genera printed in 
italics . 
