60 University of California Publications. | ZooLocy 
(a) Solitary (budding) generation—F ig. 9. Body distinetly 
larger at anterior end, and tapering nearly uniformly to the 
posterior end; the anterior end with a pronounced ventral bend. 
the posterior with a nearly equal dorsal bend. Test rather thin 
and soft, and highly transparent, without special thickenings or 
Fig. 9.—S. affinis, solitary generation. 
asperities; a pair of lateral and somewhat dorsal appendages at 
‘ 
the posterior end. No lineaform ‘‘glandular’’ organs. Leneth 
of full grown zooids, 80 to 100 mm. Branchial orifice directed 
somewhat ventrad, lips prominent, upper overarching. Atrial 
orifice without lips, directed somewhat dorsad, armed, particu- 
larly in older specimens, with a pair of latero-dorsal appendages. 
Body muscles eight, all excepting last interrupted on ventral 
side. First and second interrupted on dorsal side (in older 
specimens only). First trending backward to some extent on 
ventral side. Lip muscles of branchial orifice complicated; two 
sphincters in upper and one in lower; two longitudinal bands on 
each side running forward from the first body band, one to the 
dorsal lip, the other to the ventral; a band on each side extend- 
ing from the angle of the orifice postero-dorsad; a pair of short, 
strong dorsal longitudinal bands in dorsal lip. Endostyle dis- 
tinetly curved in its anterior third to correspond with the ventral 
bend of the body as a whole; extending from far forward in the 
ventral lip back to the esophagus; both extremities turned 
abruptly up, the anterior more conspicuously so than the poste- 
rior. Ganglion slightly in front of anus. Hypophyseal mouth a 
large, highly convoluted, nearly closed ring, with opening to the 
left (fig. 11). Gill long and narrow, extending from slightly 
in front of the anus to the esophagus, terminating, consequently, 
—-. 
