PLATE XXII. 



Fig. 310. Anciila Slilphlirca, dorsal tentacle enlarged; from a drawing by 

 Dr. Stimpson. 



Fig. 311. DciidroiiolMS arborcscens, — from a drawing by B. F. Nutting, 

 — greatly enlarged. 



Fig. 312. The same, under siu'face of the head. 



Fig. 313. The same, dorsal tentacle. 



Fig. 314. Ancula sulpliiirea; from a drawing by Dr. Stimpson. 



Fig. 315. ]^Iolg:ula producta; from a drawing by Mr. Burkhardt. 



Fig. 316. The same. 



Fig. 317. Glantlula mollis; from a drawing by Mr. Burkhardt. 



