A chart of the Rugose corals. — Sherzer. 
291 
INCREASE. 
Ova. 
Conical or sub- 
cylindrical. 
Ova. 
Conico-cylindri- 
cal anil -cor- 
nute. 
Ova, gemmation. 
Ova. 
Ova, lateral gem 
mation. 
Ova, lateral, calic 
inal gemmation 
Ova, 
FORM. 
Prismatic. 
T u r b i n a t e or 
co n i co-cyl i n- 
drica l. 
Cylindrical oi 
coni c o-cy 1 i n 
drical. 
Conical, 
W.ULS 
One. 
One. 
Complete. 
One, 
inner 
One. 
Two. 
EPITHKi A. 
Present. 
Present. 
Complete. 
Complete. 
Distinct. 
cylin- 
drical or pris- One. 
matic. 
Conico- cylindri- 
cal. Tall. 
Ova. 
Ova. 
Turbinate or 
con ico-c y 1 i n- 
drical. 
Ova. 
Ova, lateral and 
calicinal gem 
mation. Fission 
Ova and gemma 
tion. 
Ova, 
Conico-cylindri- 
cal. Tall. 
Two. 
One. 
One. 
Conical. 
Cylindrical. 
Sub -cylindrical 
to prismatic 
Turlii nate to 
conico-c y 1 i n- One. 
drical. 
Complete. 
Thin. 
Thin. 
Complete, 
thin. 
One. Present. 
rwo. 
iConiplete, 
thin. 
Two. 
Ova and calicinal 
gemmation. 
Ova, extra-calic- 
inal gemmation. 
Turbinate to 
conico-c yli n- 
drical. 
Ova, calicinal 
gemmation. 
Ova, calicinal and 
lateral gemma- 
tion. Fission. 
Ova, calicinal 
gemmation. 
Prismatic. 
One. 
Absent. 
Deep; smooth flat 
center. 
I Variable, sometimes 
everted. 
Present. 
!Variable, circular. 
j Center has a promi- 
nent conical boss. 
Moderately deep with 
small flat center. 
Distinct. Deepened. 
Present. 
Deep, with thin edges. 
Shows a secondary 
circular cup. 
Circular, shallow, 
Present. more or less evert- 
I ed. 
Present. 
Strong. 
Usually shallow. Has 
a rounded eminence. 
Distinct. 
Moderately deep. 
Present. Distinct 
Complete, 
usu ally 
thin. 
Distinct. 
One. Absent. 
Conical, cylin- 
drical or coni- One. 
co-cylindrical. 
Cylindrical 
prismatic. 
Cylindrical 
prismatic. 
Complete, 
thin. 
One. Complete. 
Ova. 
Turbinate. 
Ova, lateral gem- 
mation. 
Ova, sub-margin- 
al gemmation 
Ova, calicinal 
gemination. 
Ova. 
Ova and gemma 
tion. 
or One or 
two. 
Prismatic. 
Prismatic. 
Conico-cylindri 
cal. More or 
less curve d 
Prismatic. 
One. 
None. 
One? 
One. 
Complete. 
More or 
less de- 
veloped 
Present as 
a common 
r<>\ ering. 
Various, seldom deep. 
Sometimes with pro- 
jecting bottom. 
Well devel-Sub-PoWecmal. A 
simple, thick mural 
ridge. 
oped. 
Present. 
Distinct. 
Moderately deep. 
Contains a projec- 
tion from center. 
Moderately deep with 
strong projection. 
Distinct. 
Of moderate dimen- 
sions with a pro- 
jection. 
Present. 
Present as 
a iiiKHi 
covering, 
One. 
Present. 
Complete 
thin. 
One. Present. 
Distinct on 
outer cor- 
al lites. 
Present on 
i mter cor- 
allites. 
Present. 
Present. 
Generally deepened 
with a smooth bot- 
tom. 
Small, pit-like, sur- 
rounded with a rim. 
Margins expanded, 
central pit with rim. 
Circular, shallow. con- 
tains a dome-shape 
boss. 
t Includes Nematophyllum, McCoy; Stylaxis, McCoy: Siphqnqdendron, Mc< oy; 
Petalaxis, E. and H. ; Stylina. Lesueur; Lithodendron, Plul. . Axinura, < 'astelnau: 
Stylastra-a. Lonsd.; Acrocyathus, D'Orb. ; Lasmocyathus, D'Orb.; Astrffia, (pars) 
Lam.; Arachnium. Key.; Nemaphyllum, McCoy and Lithostrotram, Bronn. 
tt Includes Trvplasma. Lonsd.: Scarithodes. Dyb. and Acanthocyclus, Dyb 
t Erismatolithus (Erismolithus), Martin, and Streptastrrea, Sandberger. 
