239 
as, already pointed out by Broch.) He espécially points out the near 
relation between 7oichopoma obliguum and Lafoza, and not only 
refers the former genus to the Lafoéidae, but is most inclined: to 
refer the named operculate species to the genus Lafoéa, and when 
he provisionally uses the name 7oichopoma it is only because the 
gonothecae of this species were at that time unknown. Kramp?”) 
has later found that it possesses a,'"coppinia”, but while' he like 
Broch refers it to the Lafogidae, he at the same time maintains 
that the presence of an operculum entitles this species to represent 
aå proper genus. In a later paper Broch?) unites the Campanulinidae 
with the Lafoéidae and again divides the latter family into two 
sub-families, the Grammariina, in which the gonothecae are united 
into aggregates and the Campanulinina, in which that is not the 
case: From the reason given above I cannot agcept. this division. 
The connection between the Campanulinidae and the Lafoéidae 
must no doubt be expressed in this way, that the Campanulinidae 
have arisen from the Lafozidae, and this transformation has taken 
place in such a manner, that different members of the latter. family 
have developed an operculum.%) Broch>%) has pointed out the 
great likeness between 7oichopoma obliguum and Lafota gracillima, 
but . Calycella syringa and Tetrapoma gvadridentatum present a 
similar likeness to such ,Lafoéa species as L. pocillum and L. pyg- 
maea. At the other side the species of the genus Cuspidella seem 
to stand in a similar relation to the species of the genus Følellum, 
in which we find two different forms- of sessile hydrothecae, some, 
4) AsI do not believe in a sharp division between the Lafoéidae and the 
iidae, I think it likely that also a number of species of 
the latter family have developed an operculum, and næ have no doubt 
two such examples in ,,Campanularia" marginata (7, p. 54) 
and ,, Camp.” macrocyttara (Bale (7, p. 56), the reg onkegdd 
hydrothecae of which have a four-toothed margin, and, therefore, no 
doubt, possess a T'hyroscyphus-operculum. The double margin in the 
hydrothecae of the mene species is no doubt due to a regeneration. 
5) 13, p, 158 
Vidensk. Meddel. fra den tathrd. Føren. Bd. 64, 19 
