810 Transactions,—Zoology, 
ANTHEAD2, 
Analyis of the genera, 
Mouth normal. 
Tentacles not fully retractile, 
Column long, trumpet-shaped... 
Column normal. 
Tentacles conical 
Tentacles fusiform 
Tentacles retractile. 
Tentacles subulate. 
Tentacles sub-equal va 
Tentacles very unequal ... YA 
Tentacles not subulate, 
Tentacles club-shaped 
Mouth elevated 
Mouth depressed 
Tentacles moniliform 
ACTINIADE, 
Analysis of the genera. 
Tentacles not retractile. 
Column short and cylindrical 
Column long and conical 
Tentacles retractile, 
Skin smooth. 
Column pierced 
Column imperforate 
Skin warted 
Bunopiwz.* 
Analysis of the genera (after Gosse), 
Tubercles conspicuous, 
Dise and tentacles retractile, 
Tubercles of one kind only. 
In the form of rounded warts. 
Irregularly scattered 
Arranged in vertical lines 
Arranged in wavy horizontal Sei: 
Arranged in a single horizontal Wie: 
In the form of queer blisters ... 
Tubercles of two kinds, 
and erectile cie papille 
Disc and tentacles not retractile |... 
Tubercles obsolete 
-» rounded ati 
Aiptasia, 
Anthea, 
Eumenides, 
Paractis, 
Dysactis, 
Melactis 
Corynactis, 
Heteractis, 
Comactis. 
Ceratactis, 
Nemactis. 
Actinia. 
Phynactis. 
Aa 
Cystactis. 
Echinactis. 
Bolocera. 
Stomphia, 
* Phymactis vetitis has also the column warted, 
