217 
mesenteries, in large specimens 70—88. Longitudinal muscles of 
the tentacles and radial muscles of the oral disc palisade-like ar- 
ranged. 2 siphonoglyphes with long aboral prolongations. Mesent¬ 
eries hexamerously arranged in 4 cycles, the fourth cycle incom- 
plete. Mesenteries of the fourth order developing earlier in the 
exocoels situated next to,the mesenteries of second order than in 
those next to the first. All mesenteries of the three first orders 
and part of the fourth perfect. Longitudinal muscle-pennons strong, 
band-like. Strong parietobasilar and basilar muscles. Mesogloea in 
the region of the ciliated tract with numerous cells. Embryos devel¬ 
oping in a deep circular fold round the column. Nematocysts of 
Fig. 20, 21. Epiactis niortenseni with young ones on the column (comp. the text). Fig. 20. 
Specinien from Campbell Isl. Magnif. 3/1. Fig. 21. Specimen from Auckl. Isl. Magnif. 1,8/1. 
the column 17—26 x 1 , 5-2 /t, those of the tentacles about 20 — 31 
X2(— 2 , 5 ) jLi, those of the actinopharynx partly 29—38X2,5 fiy 
partly 22—29X3,5—4 /ti. 
Colour? 
Dimensions of the largest specimen in contracted State: 
Breadth of the pedal disc 2,2 cm, hight of the column 2 cm. 
Occurrence. Auckland Islands, Carnley Harbour, under 
stones, low-water. 29.11.1914. Several specimens. 30.11.1914. 1 
spec. Campbell Island, Perseverance Harbour. Under stones, low- 
water. 8—9.12.1914. Several specimens, most of them small. 
Exterior aspect. Pedal disc is wide. Column, as far I can 
see, without sucking warts, in the Auckland-specimens very con¬ 
tracted, so that there have arised deep circular and shallower long¬ 
itudinal furrows. 4 of the Auckland-specimens and 4 of the Camp- 
bell-specimens bear small young arranged in a more or less distinet 
