Fig. 1.—Spadella schizoptera (reduced from camera drawing). 7’, ante- 
rior teeth; J, jaws; E, eye; TP, tactile prominences; CC, 
corona ciliata; J, intestine; O, ovary; S, septum between 
body and caudal segments; A, anus (ventral); 4, anterior 
fin ; O. OV, external opening of ovisperm duct ; S C, spermatic 
chamber; M F, middle fin; S V, spermatic vesicle; CL, 
caudal fin. (Magnified 24 x.) 
Fig. 2.—Sagitta hispida (reduced from camera drawing of a small speci- 
men). A 7, anterior teeth; P 7’, posterior teeth ; D, diver- 
ticula of intestine ; C, cap of spermatic vesicle ; A S, accessory 
longitudinal septa of spermatic chambers. Other letters as in 
fig. 1. (Magnified 26 x.) The tufts of sensory hairs spring- 
ing from the tactile prominences have been exaggerated in 
both figures. 
21* 
