PLATE XIX. 



From original Drawings by B. F. Nutting. 



Fig. 266. Eolis Bostoniensis. 



Fig. 267. Eolis diversa. 



Fig. 268. Eolis diversa. 



Fig. 269. Eolis rufibraiicliialis, one of the branchise. 



Fig. 270. Eolis pilata. 



Fig. 271. Eolis stellata, one of the branchia;; from a drawing by Dr. Stimp- 

 son. 



Fig. 272. Eolis riiflbraucliialis. 



Fig. 273. Eolis Bostoniensis, one of the branchiae. 



Fig. 274. Eolis Bostoniensis, under surface. 



Fig. 275. Eolis Bostoniensis, upper surface. 



Fig. 276. Eolis diversa, one of the branchiae. 



Fig. 277. Eolis pilata, profile and apex of one of the branchiae. 



Fig. 278. Eolis stellata ; from a drawing by Dr. Stimpson. 



Fig. 279. Eolis pilata. 



Fig. 280. Eolis diversa. 



Fig. 281. Eolis pilata, under surface of head. 



Fig. 282. Eolis picta, upper, side, and lower view ; enlarged view of dorsal 

 tentacles and branchiae. 



Fig. 283. Eolis Bostoniensis, under anterior surface. 



