KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 51. N:o |l. 47 
crowding of the coelenterons of the polyps exists during continued growth. (pp. 14 
and 17:) 
9) When, as in many species, the colony during the greater part of its development 
retains a great multitude of polyps in proportion to the insignificant coenenchym, and 
the colonies do not acquire full development, the direct connection is retained too. The 
species of Gersemia (sensu KUKENTHAL) investigated, however, are in most cases such 
forms and, in consequence, have direct connection in the majority of cases. (p. 14.) 
From what I have pointed out, it may be seen: 
1) That the calyx is not to be relied upon as a means of differentiating between 
Gersemia (sensu KÖUKENTHAL) and Gersemia (sensu MOLANDER), 
2) That the interior construction of the colonies also argues against distinguishing 
the genus Gersemia (sensu KUKENTHAL). 
For these reasons, I reject the genus Gersemia (sensu KÖKENTHAL). 'The species 
of this genus mostly belong to Gersemia (sensu MOLANDER), viz. Gersemia arctica (DAN.), 
G. ecrassa (DAN.), G. loricata (MARENZ.), and G. danielsenmi (STUDER). G. variabilis is, 
as we have already observed, an Alcyonium, and G. bocagei closely approaches Alcyonium. 
I have not examined Gersemia marenzelleri KUKENTHAL, but it can certainly be classified 
with Gersemia (sensu MOLANDER), as in other respects it possesses the characteristics of 
this genus. 
In morphological respects, Hunephthya (sensu KUKENTHAL) is classified in two 
different groups: the Alcyoniformis and the Nephthyiformis. The former are distinguish- 
ed by a great development of coenenchym in the trunk and in the points of branches, 
which increases the retractive power of the anthocodiae; the latter have a more thorough 
ramification, with the coenenchym reduced in the points of branches; retractile antho- 
codiae do not exist. As regards the solenia, I have before (p. 14) pointed out a not 
unimportant difference between these two groups. In all species related to this latter 
group there exists a collection of numerous spicules on the side of the anthocodia, which 
is turned outwards. This causes the characteristic bend towards the trunk. The club- 
shaped spicules are numerous in the anthocodiae. If, consequently, we once more sum- 
marize the characteristics which distinguish the Nephthyiformis from the Alcyoniformis, 
we have as follows: 
1) The poor development of the coenenchym in the branches; 
2) The non-retractile anthocodia; 
3) The gathering of spicules on one side of the anthocodia; 
4) The numerous club-shaped spicules in the anthocodia; 
5) The shape of the canal system; 
6) The ramification of the colony. 
This is, it seems to me, a sufficient reason for distinguishing the Funephthya neph- 
thyiformis from the Eunephthya alcyoniformis as two distinct genera. I also distinguish 
between Gersemia (= Ewnephthya alcyoniformis KÖKENTHAL) and Hunephthya (= Hu- 
nephthya nephthyiformis KÖKENTHAL). 
