EXPLANATION OF PLATE XIX. 



FIGURE 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 anterior portion and head of a larger 



specimen, in a different state of contraction, natural size. 

 97. Polinia glutinosa, (p. 631 ;) dorsal view, enlarged two diameters. 

 98. Tetrastemma arenicola, (p. 629 ;) dorsal view. 

 99. Stylochopsis littoralis, (p. 632 ;) dorsal view. 

 100. Plauocera nebulosa, (p. 632;) dorsal view. 



(All the figures were drawn from living sjtocinicns. by A. E. Yerrill.) 



