PLATE XIX 



From original Drawings by B. F. Nutting. 

 Fig. 266. Eolis Bostoniensis. 

 Fig. 267. Eolis diversa. 

 Fig. 268. Eolis diversa. 



Fig. 269. Eolis rufibraucliialis, one of the branchiaj. 

 Fig. 270. Eolis pilata.- 



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



son. 



Fig. 272. Eolis riillbraiicliialis. 



Fig. 273. Eolis Bostonieiisis, one of the branchia;. 



Fig. 274. Eolis Bostonieiisis, under surface. 



Fig. 275. Eolis Bostonicnsis, upper surface. 



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



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



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. 



