256 NEW-YORK FAUNA MOLLUSCA. 



Color. Shell bluish white ; cartilages and stalk at the base of the shell orange. 

 Length of shell, 1 • ; of stalk, 1 • - 6 ■ 0. 



Found on the bottoms of vessels and driftwood. I have adopted Dr. Gould's description 

 of this species. 



GENUS CINERAS. Leach. 



Animal with the mantle almost entirely naked, thick and subcartilaginous. Peduncle long 

 and thick. With the general form of the preceding. Shell rudimentary, composed of 

 five oblong small, very distant valves, two of which are on the side of the gap, and the 

 other dorsal. 



CiNERAS VITTATA. 

 (STATE COLLECTION.) 



Lepas vittaia^ Solander. Cineras id. Lam. An. sans vert. Vol 5, p. 407, Ed. prior. 

 Cineras id. Jay, Catalogue Shells, p. 7. Goold, Invertebrata of Mass, p. 22. 



Description. Body a membranous sac, scarcely distinct from the peduncle, terminating in 

 two points, deeply channelled between. Mouth surrounded by twelve long slender curved 

 subtriangular cirri, deeply cleft, with long ciliae on the internal edges and short stiff setas 

 externally. Valves exceedingly minute. 



Color. Whitish, membranaceous, with numerous longitudinal stripes of a dark chocolate- 

 brown with irregular margins, appearing through the cuticular coverings : abdominal cirri 

 whitish ; on the sides punctate, and margined with, dusky. 



Total length, 1-3; of body, 0-7. 



Occurring on ship's bottoms in the harbor of New-York. Found also on the larger sluggish 

 fishes. 



