KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. l4. N:o 6. 5 
quite as the Anthozoa now generally are separated in the two large sections of Mala- 
codermata and Sclerodermata. Now there are facts which clearly prove the close affi- 
nity between several species of both sections. So in the case of Caryophyllia clavus 
and Corynactis viridis'"), the animals of which resemble each other in the highest de- 
gree. Moreover there are instances recorded of the young of Caryophyllia clavus which 
had attained a large size without showing the least trace of any coral”). Thus if their 
parentage had not been known, they had been classed amongst the Malacodermata, wide 
apart from their real congeners. On the other hand there are Anthozoa of the section 
Malacodermata interiorly provided with a kind of coral as Sagartia Schilleriana ”), accor- 
ding to STOLICSKA resembling that of some Perforate Corals. 
A sufficiently large material at once makes it evident how useless it is to employ 
such extremely variable parts as the epitheca (its absence or presence), the coral being 
attached or free, its forming compound polyparies or simple ones, the shape or number 
of the paluli etc. for éreating new genera. In order to fix the specific and generic 
characters there is generally needed a rich series of specimens. Such wanting in se- 
veral instances I have been obliged to leave some corals undescribed, especially from 
the shallow parts of the Westindian sea. 
In enumerating the species I have generally followed the system of MirnE Ep- 
WARDS & HaAimeE, though there is a great uncertainty if such species as Schizocyathus 
fissilis and others are to be ranged amongst the Turbinolid&e, from which they differ 
in having a dissepiment. Such genera as Deltocyathus, Sabinotrochus, Trochocyathus 
ought perhaps to be classed in a group of their own, characterized by the coalescence 
of the secondary and tertiary septa between themselves. It is a feature which they 
share with the Fungide. 
Several corals exhibit a peculiar mode of gemmation, which may be most aptly 
denominated basal gemmation, as in all known instances the new individual is seen to 
grow out from the basis of its parent. It occurs in Sphenotrochus intermedius MönN- 
STER, Paracyathus arcuatus n., Stenocyathus vermiformis PoURTALES and may be a modi- 
fication of the propagation by stolons as seen in Zoanthus and in the Angie. 
1) GossE, Manual of British Actinology, p. 292. 
?) Ibid. and Ann. & Mag. Nat. Hist. June 1859, p. 449—461. 
3) Proceed. Asiatic Soc. of Bengal, 1868, p. 174. 
