148 
NATURAL HISTORY. [NEW BUILDING. 
procure their nourishment, then they form two layers of 
cells applied back to back, as in Escliara. Sometimes the 
new cells are formed on the surface of the older and 
dead ones, so as to form a cylindrical branched coral, 
having all the new pores developed at the ends of the 
branches. 
The upright Cases on the Table Cases are intended to 
contain the large specimens of the skeletons of Zoophytes, 
or Corals, arranged in the same manner as the more com¬ 
plete series in the Tables; and the collection of these 
animals preserved in spirits, (especially those which can¬ 
not be well exhibited in a dry state,) is kept in the Wall 
Cases of the Ninth Room of the old building, until the 
Wail Cases of these Rooms are made. 
The following is a continuation of the Catalogue of the 
genera of radiated animals, (from page 138.) The num¬ 
bers appended indicate the Table Cases in this Room 
which contain the specimens in the collection. 
Section II. 
Leiodermata. 
Class III. 
Acalepha. 
Order I. Phanero- 
carpa. 
Fam. 1. Rhizostomidce , 
2. Medusidce . 
Order II. Crypto- 
carpa. 
Fam 
1. Geryonidce. 
2. Oceanidce . 
3. JEquoridce . 
4. Berenicidce . 
Order III. Cilio- 
GRADA. 
Fam. 1. Beroidce. 
2. Mnemeidce. 
3. CallianiadcB. 
Order IV. Physo- 
grada'. 
Fam. 1. Diphyi d 
Order V. Chondro- 
GRADA. 
Fam. 1. Velellidce. 
Velella, Case 1 
Porpita, .... 1 
Class IV. 
Z O O P H Y T A. 
Ord. I. ZOANTHARIA. 
Fam. 1. Actiniadce 
. Actinia 
Anthea 
Metridium 
Megalactis 
Actinodendron 
Epicladia 
Heterodactyla 
Lucernaria 
Fam. 2. Zoanihidce. 
Isaura 
^wCapnea 
Hughea 
Zoanthus 
M ammillifera—1 
Corticifera— 1 
Fam. 3. Madreporidce . 
2. Physophoridce. Fungia—1, 2 
Turbinolia—2 
Diploctenium—2 
Cyclolithes—2 
Desmophyllum—-2 
Cyathina—2 
Caryophyllia—3 
Manicina—3 
Oculina—4 
Stephan ocora 
Cladocora—5 * 
Columnaria 
Strombodes 
Cyathophyllum 
Pterorrhiza 
Anthophyllum—7 
Stylina—7 
Favia 
Astrsea—7? 8 
Dictvophyllia 
Favosites 
Monticularia—3 
Meandra—10 
Dendrogyra—] 0 
Turbinaria—11 
Explanaria—11 
Merulina—11 
Pavonia—12 
Agaricia—13 
