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I 
STUDIES ON POLYCHAT LARVA. 
EXPLANATION OF PLATE 14, 
Illustrating Mr. F. H. Gravely’s “Studies on Polychet 
Larvee.” 
The figures have all been prepared from rough sketches of the 
living organism. 
Fic. 1—Polydora larva. Ventral aspect of the anterior end, with 
the lips drawn widely apart. x 130. 
Fic. 2.—Polydora larva, somewhat older than the last. Dorsal 
aspect of the anterior end. x 1530. 
Fie. 5—Spionid D. Ventral aspect of the anterior end. x 160. 
Fie. 4—Spionid A. Stage previous to the differentiation of the 
parapodia of segments 7-11 from the rest; the tentacles have not yet 
appeared. Dorsal aspect of the anterior end. x 100. 
Fie. 5.—Spionid A. Same stage as the last. Ventral aspect of 
the anterior end. x 100. 
VOL. 53, PART 3,—NEW SERIES, 43 
