EXPLANATION OP PLATE 2 

 All figures drawn with the camera lueida. 



Fig. 1. Ventral view of Sagitta californica. X 10. 



Fig. 2. Vestibular ridge of Sagitta californica. X 335. 



Fig. 3. Anterior teeth of Sagitta californica. X 440. 



Fig. 4. Seizing jaw of Sagitta Californica. X 1300. 



ABBREVIATIONS 



ant. f. — anterior fin. post. f. — posterior fin. 



col. — collarette. seis. j. — seizing jaws. 



int. — intestine. sem. ves. — seminal vesicle 



01'. — ovary. t. f. — tail fin. 



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