EXPLANATION OF PLATE XXXV. 
FiGtRE 265.—Leptosynapta Girardii, (p. 716 ;) anterior part of the body, enlarged one- 
half. 
266.—The same; perforated plates from ‘the skin, and the “anchors,” highly 
magnified. 
267.—Echinarachnius parma, (p. 717;) upper surface with the spines partly 
removed, natural size; wu, ambulacral zones; b, interambulacral 
zones. 
268.—Strongylocentrotus Drébachiensis, (p. 716;) side view, natural size. 
269.—Asterias arenicola, (p.718;) dorsal view, somewhat reduced. 
270.—Ophiopholis aculeata, (p. 719;) dorsal view, about one-half natural size 
(Figures 265, 266 were drawn by A. E. Verrill; 267, 269 were copied from A. Agassiz; 268, 270 were 
driwa by E. S. Morse.) 
