148 
SUPPLEMENT. 
4. CoRYDENDRiUM (Van Beneden), — Tentacles alike, scattered, 
5. Eudendrium (Ehrenberg).“T'entoc/e5 in one series. 
II. JVot coralligenous. 
6. CoRYNA (Gasrtner). — Tentacles alike, scattered. 
7. Hydractinia (Van Beneden). — Tentacles in a single series. 
Tubularia ornata {Couthouy). — Filiform, 3 to 4 inches high; polyps 
large ; beak long, subcylindrical ; external tentacles filiform, oral tentacles 
very short ; gernmuliferous branchlets much branched, lax and pendent. 
Rio Janeiro. — Exp. Exp. 
CoRYNA CAPiLLiFERA {Pickering). — Summit of polyp long-ovate ; tentacles 
about 20, capillary, and scattered. 
Plate 61, fig. 10, polyp, enlarged. — Sandwich Islands. — Exp. Exp. 
SUPPLEMENT 
TO THE DESCRIPTION OF SPECIES. 
This Supplement includes tlie following genera of doubtful 
or undetermined character : Allopora, Myriozoum, Pustulopora, 
Coscinopora, Eeceptaculites, Tetradium, Tlieonea, Limaria, Stro- 
matopora, Cbaunopora, Distichopora, Orbulites, Marginopora, 
and Polytrema, 
Genus ALLOPOEA. — Ehrenberg. 
Camulato-ramose, each polyp giving out, in succession, a sin- 
gle bud (branchlets therefore zigzag). Corallum calcareous and 
solid, not at all penetrated by stellate cells ; calicles somewhat 
prominent, cells quite deep, less than a line broad, funnel-shape, 
margin crenate, and having a series of cellules between the cre- 
natures. 
