442 
F. A. FUTTS. 
tiire of the pharynx is not cleai-. The stolons of T. inisa- 
k ien sis appear to resemble those of T. gemmipara in the 
absence of tentacles, bnt it cannot be decided from the figure 
or description whether the head segment actually carries 
parapodia as in the latter species. The number of segments 
in the stolon is nineteen, agreeing with T. crosslandi 
(eighteen), and not T. gemmipara (thirty), but it is possible 
that the full number of segments had not been attained. 
The most curious point about the stolons is the fact stated 
by Izuka that “ tlie alimentary canal is the direct continua- 
tion of that of the mother individual ; it is slender, and termi- 
nates at the anus of the anal segment.” The presence of 
the alimentary canal is thus lightly dismissed. We are not 
told whether this fact was confirmed in a number of stolons 
and by means of sections, bnt the example drawn in Izuka’s 
fig. 4 has the flat appearance characteristic of the gutless 
stolons and shows no sign of the anus. Until a more exact 
description is given there remain two possibilities with regard 
to T. misakie n sis : 
(1) That the stolons all possess an alimentary canal, thus 
representing a moi-e primitive stage than T. gemmipara 
or crosslandi, or even that T. ingens, which is described 
as possessing a rudimentary alimentary canal (3, p. 299, 
fig. bj. 
(2) That the dorsalmost stolon (or genital appendage as in 
T. gemmipara) was alone examined andfouud to possess an 
alimentary canal, a condition assumed to occur in the others, 
too. I must confess to a strong suspicion that T. misa- 
kiensis will be found to exhibit phenomena similar to 
'1'. gemmipara. But at the same time conditions are so 
variable among this group of Syllids that it would not be very 
surprising to find that the stolons still possessed a rudimen- 
tary gut. 
Summary. 
In several species of Try panosyllis the stolons are pro- 
duced from a cushion of proliferating tissue at the posterior 
