114 AMERICAN MARIXE CONCHOLOGY. 



serrated ; mouth /\-shai)ecl ; brancbire in longitudinal series, one 



hundred or more ; foot with two sliort processes in front, and 



ending in a point behind ; pale yellowish-white ; branchial cirri 



salmon-colored, bordering on orange. 



Length one and three-quarters inch. 



diaries Miver, Mass. 



Genus FLABELLINA, Cuvier. 



1. F. BosTONiENSis, Couthouy. Fig. 234. 



{Eolis.) Bost. Journ. Nat. Hist., ii. 67, t. 1, f. 1. 1838. 



Body elongate, lanceolate, delicate drab-color, with a silvery 

 line on the tail and on the back of the anterior tentacles, which 

 are long, subulate ; posterior tentacles shorter, serrated at tips ; 

 branchiae curved lanceolate, nucleus drab-colored, tips white, in 

 four to six distant groups on each side ; angles of foot much pro- 

 duced. 



Length 25, diam. 7.5 mill. 



Massachusetts. 



2. F. RUFiBRANCHiALis, Johnston. Fig. 235. 



(Eolidia.) Loud. Mag. Nat. Hist., v. 438. 

 Eolidia Embleioni, Johnston, Ibid., viii. 79. 

 Eolis Mananensis, Stimpson, Invert. Grand Manan, 2G. 1853. 



Body slender, tapering, white ; oval and dorsal tentacles sub- 

 equal ; branchiae nearl}' linear, variable in length, disposed in six 

 or seven clusters on each side, interior of a bright vermillion, 

 with an opaque white rim near tip ; anterior angles of foot pro- 

 longed and folded transversely. 



Length one inch. 



j^eic England, northwards. {Eur.) 



3. F. PiLATA, Gould. Fig. 236. 



- Invert. Mass., 2d edit. 343, t. 19, f. 370, 277, 279, 281. 1870. 

 Body elongated, a carmine line margined with silvery dots be- 

 tween the tentacles and each tuft of branchiae, tail silvery ; tenta- 

 cles subulate, simple, tipped with silvery, branchiae clavate, con- 

 tracted at tip, which has two sih'ery zones, nucleus pale-chestnut, 

 arranged in five or more distant groups of two transverse ranges. 



Length 3T, breadth 6 mill. 



Cluirles River, Mass. 



4. F. STELLATA, Stimpson. Fig. 237. 



{Eolis.) Invert. Grand Mauan, 35. 1853. 

 Body slender, pale-white ; dorsal tentacles wrinkled trans- 



