228 DORIDID.E. 



Doris bilamellata. 



Plate XXI. Figs. 299, 305-309. Plate XX. Figs. 285, 286. 



Body elliptical, covered with pestle-shaped papillte, whitish varied with rusty 

 brown or flesh color and opaque white ; branchiis twenty to twenty-five, long, 

 linear, simply pinnate, arranged transversely in an oval, including several tu- 

 bercles. 



Dvris bllameUata, Lix. Syst Nat. (l'2th ed.) i. 1083. — Johnst. in Ann. Nat. Hist. i. 53, 

 pi. 2, fig. 8. — TiioMi'S. Ibid. V. Si). — McGilliv. Moll. An. Aberd. 198. — Forbes 

 and Hanl. Biit. Moll. iii. 567. — Alder and Hanck. Monog. Br. Nudib. Moll. 43, 

 Fam. I. pi. 11. 



Don's fusca, Muller, Zool. Dan. Prodr. 229, No. 2768? Zool. Dan. pi. 47, figs. 6-9. 



Do)-is verrucosa, Pexnant, Brit. Zool. iv. 43, pi. 21, fig. 23. — Turton, Brit. Fauna, 133. 

 — Fle.ming, Brit. Aniin 282. 



Doris vulgaris, Lkach, 8yn. .Moll. Gr. Brit. 19. 



Doris Elfortiana, Leach, Jbid. 20, pi. 7, fig. 1. — Blainv. Bull, dcs Sc. 1806, p. 95 (sec. 

 Leach). 



Doris Leachii, Blainv. Ibid. xiii. 450 (sec. Leach). 



Doris affinis, Thoiips. in Ann. Nat. Hist. v. 85. 



Doris litiirata, "Beck," Moll. Ind. Moll. Gro'ul. 5. — Stimpson, Check Lists, 4 (1860). 



Doris ohrelala, Bouch. Ciiaxt. Cat. des Moll, du Boul. 42. 



Doris coronata, Agassiz, Proc. Bost. Soc. Nat. Hist. iii. 191 (no description). 



Animal elliptical, the sides nearly parallel and the ends equally 

 rounded ; pale rusty, or flesh-color, or marbled with the two ; sur- 

 face covered with rather large, unequal, short pestle-shaped protu- 

 berances, the tips of the larger ones cream-colored. Tentacles short, 

 somewhat compressed, the upper three fourths obliquely laminated, 

 the laminse not fully meeting behind, tip knobbed, buff-colored. 

 Branchial plumes long and slender, simply foliated, about twenty- 

 two in number, arranged in an oval across the back, somewhat con- 

 cave and interrupted posteriorly, and enclosing several tul)ercles. 

 Edge of mantle serrated by the tubercles. Foot rather narrower 

 than the body, somewhat truncate behind. Head as broad as the 

 foot, crescentic ; tail pointed, much narrower than foot, on the mid- 

 dle of which it lies. Length, about an inch ; and about half as wide. 



Found under a floating log at East Boston, May, 1849. Also by 

 Professor Agassiz at Beverly, in June ; also dredged by Mr. Stimp- 

 son in Boston Harbor, near Governor's Island, in four fathoms, May 

 24, 1853. It has been noticed from Greenland by Moller, and in 

 Iceland ; also abundantly throughout Northern Europe. 



The eggs are excluded in a tape-like mass, which is attached by 

 one edge in a coil of one or two turns. (PI. XX. figs. 285, 286.) 



The spicula3 are slightly elbowed, rounded at the ends, and some- 

 times having a small spine at the elbow. 



