348 H. J. Clark on Lucernaria. 
has a highly ~~ structure. Extremely elongate, columnar, 
cell-like bodies extend in i a from the outer to the 
nate with them. ‘This arrangement reminds one of the m 
ical disposition of pou great cells in the ee of  Pleurobachit 
oral side. It resembles elastic tissue very closely. Next the aboral side these 
fibres trend mostl Atatlete ins with the soe wall, or at very oblique angl 
it ; Z 
es 
ively faint, and less frequent, but still continue the trend which they have on the 
aboral side of the double wall. The plea core fic of these two kinds of dies are 
Mil described by Max Schultze, Veber den Bau de er Gallertscheibe der 
s 
Peg cae an 
- cape the fibres be in ev on direction, “Sie laufen gestreckt in n allen Rich vt 
se a ag gy und yer rbinden sch unt er sinande unter allen méglich with 
r, if not identical 
My zi fa were ma nae upon perfectly fr fresh r tery. and 
of any reagents. In our Lucernarian, and in fact in all the Lucern hi we (see but 
nal Boston Nat. Hist. Soc., pt 1863) the ou Sadie do not anastomose, 3 
coe in ead Tine s from the o r to the inner wall. hodor Ss 
e the inves tigation of the geltiotforn mass of Pleurobrachia riot 
ante As was taller I had not in my possession lenses of the proper de care 
rking distance to make out the histological Y dlewiels with the aes se8s a 
at py excessively transparent bodies demand, and ther 
T fell into an error which IT am only too glad to correct. 
forme mi xk e wa 
elastic fibres, The mistaking the fibres for the prof 
arrangement in the least, as I formerly descri 
viz., Pieris stite Ag., about of an in 
oan age its proportions, shape, the Sonelerely depth of the 
and the fone ec remarkably li net 
are very few, but quite conspicuous, and have a peculiar 
fibres extend radiatingly from the corners of the stom 
