EXPLANATION OF PLATE XIX. 



FiGUUE 95.— Cosmocephala ocliracea, (p. G30;) anterior portion, enlarged nearly three 



diameters, dorsal view. 

 95a. — The same; ventral view. 

 9G._Meckelia iugens, (p. 630 ;) anterior portion of a specimen not fall 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 glutiuosa, (p. 631 ;) dorsal view, enlarged two diameters. 

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

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



100.— Planocera nebulosa, (p. 632;) dorsal view. 



(All tbe figures were drawn from living specimens, by A. E. Verrill.) 



