56 University of California Publications. [ ZooLocy 
the same in the adult. The hypophyseal-ganglionic complex, and 
especially the digestive tract, are, however, obviously still imma- 
ture. As to the whorls of zooids, it ean only be said at present 
that the close similarity of this species to Cyclosalpa affinis and 
C. pinnata in the arrangement of the zooids in the chain, makes 
it highly probable that the whorls are likewise much the same in 
the two. The diagnosis is from zooids 4 mm. long, exclusive of 
the intestinal tract. 
Body compressed, cask shaped, the ends imperfectly truncate, 
though adult form probably not yet assumed. Test thick, and 
consistency of animal as a whole much firmer than adults of soli- 
tary generation. Peduncle for attachment to stolen situated 
on ventral side nearer anterior end, relatively long and narrow, 
containing continuations of the first and second body muscles. 
Branchial orifice terminal, lps (at this stage) scarcely recog- 
nizable. Atrial orifice small, situated at dorso-posterior angle 
(in this stage). Body muscles, 4 on dorsal side, and 4 on ven- 
tral, these branching and anastomosing laterally in a complicated 
way, and always with a definite asymmetry, the arrangement on 
either side of a given zooid depending on whether the zooid be 
a right or left one in the salpa chain; or, what amounts to the 
same thing, whether the side is turned toward the anterior or the 
posterior end of the parent of the chain. Arrangement on side 
toward anterior end of parent is as follows: second muscle bifur- 
cates a little distance from median dorsal line, the branches unit- 
ing again about opposite the endostyle to extend into the ventral 
peduncle, Pl. III, fig. 7. Third muscle likewise bifureates about 
same distance as second from dorsal median line, the anterior 
branch extending down to cross the ventral median line and to be- 
come continuous with its fellow of the opposite side of the zooid, 
and also anastomosing with a ventral longitudinal band running 
into the peduncle. The posterior branch likewise extending 
across ventral line to join fellow of opposite side, but also send- 
ing two delicate branches posteriorward, approximately parallel 
with the endostyle, the more dorsal passing midway between the 
atrial orifice and the esophagus, the other ventrad of the esopha- 
gus, and both extending into the ‘‘ post abdomen,’’ PI. III, fig. 7. 
Arrangement on side turned toward posterior end of parent is 
— 
. enx™~ne ~~ 
