252 
On one side of them there were 4 pairs of mesenteries perfect, 
on the other side 4 pairs and a single mesentery, the partner of 
which was imperfect. With these 11 pairs some weaker, imperfect 
alternate. One more but incomplete cycle of very weak mesenteries 
was besides present. The perfect mesenteries were provided with 
strong longitudinal muscle pennons, the folds of which are high and 
somewhat ramificated. Especially some pennons (probably those of 
the first order) are strong. I have reproduced such a mesentery 
in the region of the ciliated tract in the textfigure 43. The parieto- 
basilar muscles are weak. The imperfect mesenteries lack pennons 
but have filaments. The reproductive organs were not developed. 
Concerning the nematocysts compare the diagnosis. The needle- 
shaped nematocysts in the acontia are measured on sections. 
Gen. Cvicophovus nov. gen. 
Diagnosis. Pedal disc well developed, at least as broad as 
the oral disc. Column thin, smooth, without cinclides. Sphincter 
well developed, mesogloeal. Tentacles rather short, conical, fewer 
than the mesenteries, the inner considerably longer than the outer. 
Longitudinal muscles of the tentacles and radial muscles of the 
oral disc ectodermal. Mesenteries hexamerously arranged, more 
numerous in the proximal part than in the distal. Only six pairs 
of mesenteries perfect, of which two directives. Longitudinal muscles 
of the mesenteries weak, forming no distinet pennons. Parietobasilar 
and basilar muscles weak. The six first pairs of mesenteries sterile. 
Acontia siender with very short nematocysts. 
As we see below from the description of ''Sagartia'' nutrix Stuck. 
this species is very different from the true Sagariia-s^QcxQS and agrees 
in the absence of cinclides and the sterility of the six first pairs of 
mesenteries with the subfamily Chondractiniinae (family Chondracti- 
niidae Stephenson). It is however questionable, if the genus 
is in reality allied with the other known Chondractiniinae except 
Paraphellia. 
Cvicophovus nutvix (Stuck.). 
Sagartia nutrix n. sp. Stuckey 1909 c, p. 382 fig. 6. PI. 21 figs. 1, 2. 
Diagnosis. Sphincter transversally stratified, in the upper part 
sometimes reticular. Tentacles to 96 (6 + 6 + 12 + 24 + 48), the inner 
