CLASSIFICATION OF ACTINIARIA 573 
ACRORHAGI.— Marginal outgrowths of the body-wall 
found in some genera of Actiniaria, and which may or may not 
be specialized as nematocyst-batteries. They may be simple 
(spherical, conical, &c.), shghtly compound, or even frondose. 
TEXT-FIG. 20. 
--- - 
a5 = -— tr tt tN NY ---Z 0 ANTHACTINIAR/A 
oe = = 2 SS 
rs - = SPS 
RS 
x 
VO --DoDEecacrin/AR/A 
STN 
AN 
XN 
NEN 
S3ede- ACTINIARIA 
WAS \ 
\da-4--WYNANTHEAE 
\ ve oe 
ves VN 
i Uy 
' 
! 
! 
ee ee 
—— 
- 
_ = 
=~ J = 
: Zo4n,> 
aS ‘Ng 
se 2 
Sacre eA Aa ae 
ANnrHozoAN ANCESTORS 
Diagrammatic representation of the classification and evolution 
of the Zoanthactiniaria. 
CaPiTuLUM.—The bodies of some Actiniaria show a 
distinction into three regions: the main part of the body in 
such cases is termed the scapus, and may be provided with 
cuticle. The distal extremity, which bears the tentacles, is 
NO. 260 Qq 
