218 
annulus round the column (figs. 20, 21). In one specimen there 
was round the column a deep fold, in which several young were 
bidden wholly or for the greater part. In some of the other spec- 
imens provided with young the circular fold for the young was 
hardly differentiated from the other circular folds of the column. 
The embryos had mostly immigrated from the brood-pouch. It is 
namely clear that we have to do with a species, the young of 
which develop their first stages in a brood-pouch of the same kind 
as in Cricophorus nutrix (compare this species). The margin is 
distinet with a deep fossa. In sections through the marginal region 
I have observed cinelides (stated in 5 specimens). The tentacles 
are hexamerously arranged. The youngest cycle is incomplete. The 
number of tentacles varies in the larger specimens from 70 to 
88 . Strange to say I have not observed the largest number in the 
largest specimens. Two specimens, each with 88 tentacles, were 
not more than 1 resp. 1,8 cm broad at the pedal disc and 0,5 resp. 
1 cm high, while 3 specimens with a pedal disc of 2,s resp. 2,3 
and 2 cm diameter and with a column l,y, 1,8 and 1,5 cm high 
had at most 76 tentacles. The tentacles were short, conical and 
in consequence of a bad preservation strongly depressed in the 
apex and here with a wide perforation. The oral disc is radially 
furrowed. The actinopharynx is well developed with numerous long¬ 
itudinal ridges and furrows and 2 as a rule symmetrically situated 
siphonoglyphes, which are provided with long aboral prolongations. 
Anatomical description. The ectoderm of the column is 
high with numerous giand cells and nematocysts. The mesogloea 
is, at least in contracted State, thicker than the ectoderm, fibrillar 
and provided with numerous protoplasma-poor cells. The circular 
muscles of the endoderm are ordinarily developed. The sphineter 
is circumscript and mostly strong but varies in its structure. I 
have sectioned the sphineter of several specimens both from Auck- 
land and Campbell Island. In the textfigure 22 we observe a main 
lamella of the mesogloea strongly thickened in the inner parts and 
divided in 2 thick branches; in a second specimen the main la¬ 
mella was thickened in the inner part without partition, in a third 
specimen (textfig. 23) it was thin, in a fourth specimen it was 
thick but short. In a fifth specimen, which I have sectioned in 
two different plans, the main lamella was in one place divided in 
