EXPLANATION OF PLATE XIX. 
Fiaure 95.—Cosmocephala ochracea, (p. 630 ;) anterior portion, enlarged nearly three 
diameters, dorsal view. 
95a.—The same; ventral view. 
96.—Meckelia ingens, (p.630;) anterior portion of a specimen not full grown, 
natural size. 
96a.—The same; ventral view of the auterior portion and head of a larger 
specimen, in a difterent state of contraction, natural size. 
97.—Polinia glutinosa, (p. 631 ;) dorsal view, enlarged twe diameters. 
98.—Tetrastemma arenicola, (p. 629 ;) dorsal view. 
99.—Stylochopsis littoralis, (p. 632 ;) dorsal view. 
100.—Planocera nebulosa, (p. 632 ;) dorsal view. 
(All the figures were drawn from living specimens, by A. E, Verrill.) 
