152 
Dr. F. Toula on the Dactyloporida. 
were generally ranked as Zoophytes, to be really Algte; and he 
regarded it as probable that many fossil forms, ranked among 
Polyparia by previous authors, and among Foraminifera by 
some contemporaries, are in reality plants. M. Munier-Chal- 
mas proves the genera Dactylopora, Acicularia , and Polytrypa 
to be Algse, by his figures of transverse sections and of the 
annular cellules of Polytrypa elongata, Defr., and Cymopolia 
rosarium. The same author considers Cymopolia and Poly¬ 
trypa to belong to the same genus. 
M. Munier-Chalm as’s division, Siphonees verticillecs , em¬ 
braces the whole of the Algm with green spores, constituting 
Harvey’s family Dasycladete, also fifty Triassic, Jurassic, Cre¬ 
taceous, and Tertiary genera, closely allied to Larvaria , Cly- 
peina , Polytrypa , Acicularia , Dactylopora, and Utcria. Only 
seven genera are known living in the present seas. The 
organic substance being destroyed, there generally remains a 
calcareous skeleton, consisting of channels, small cellules dis¬ 
posed in circles, and large fructification-cells. 
Munier-Chalmas’s present arrangement of the Siphonece 
Verticillatce stands thus :— 
I. Cymopoliidje. 
II. Acetabu- 
eariib^:. 
III. Thyrsopo- 
RELLIDJE. 
IV. Pactylo- 
PORID-iE. 
V. Neomeritve. 
f Dasycladus, Agardh. f a. Decaisnella,.!/.- Chaim.** 
| Ilalycoryne, Harvey. \ b. Larvaria, Defr.* 
J Clypeina. Mich.* ^ e. Vaginopora, Defr* 
Cymopolia, Lamb.** j d. Karreria, M.-Chaim* 
Parkerella,Af.- Chaim* i, e. Polytrypa, Defr.** 
Hermitella, M.-Chaim.* 
f Polyphysa, Lamb. 
Acetabularia, Lamk. 
< Briardina, M.-Chaim* 
| Acicularia, D'Arch* 
[ Orioporella, M.-Chaim* 
I Thyrsoporella, Gilmb* 
| Guembelina, 31.-Chaim* 
Dactylopora, Lamk.* 
f Neomeris, Lamk. 
I Bornetella, 31.-Chaim. 
| Terquemella, 31.-Chaim* 
J Maupasina, 31.-Chaim * 
'] Zittelina, 3l.-Chalm.* 
I Uteria, Mich* 
I Hagenmuelleria, M.-Chalm. 
[ Carpenterella, 31.-Chaim. 
The subgenus Haploporella , Giimbel, including, according 
to Prof. Zittel, the genera Prattia , D’Arch., Marginoporella , 
Park., and Larvaria , Defr., is admitted by M. Munier-Chal- 
mas under the name of Larvaria , and united with Cymopolia , 
* Tbe genera marked with an asterisk are fossil; and those with two 
asterisks both fossil and recent. 
