304 THE AMERICAN NATURALIST. [VoL] XXXVI. 
the parent. Their somites are 20 to 28: in number; their 
small but well-developed parapodia aré furnished" with monili- 
form dorsal cirri and minute setze of the same form as those of 
the parent. The average length of a mature bud is 2.5 mm.; 



7197. 
a at 
err S xx 
d98pk de 
Fic. 9. — Frontal h b Tc Soemnitiri s showing cdi nohis iei 
—— -e se of development The z zooids 
of the yrs e,m 
rd are marked à 



, nearl: sagittal plane) : The youngest bul 
5 indicates a bud in which Segmentation is s just Wpuniug i &, 63, buds in . 
à al ready well 
x developed ; 4-56, buds 
——— 
buds progressively - older ; br, brain ; veh first dorsal cirrus Zn, ` 
muscles ; ny ave CPt; Ss sperm ce 

the bresdih, retuned? Bertipodis is 1mm. The: bud tapers 
more towards the caudal than ‘towards the cephalic extremity. 
The anal cirri are neg and oe bre Bow de of Pa aiden : 
cirri (Figs. 7, 8). ^ 
