246 ^OLIDID^. 



^olis purpurea. 



EoUs purpurea, Stimpson, Mar. Invert. Gr. Manan, 25 (1833) ; Check Lists, 4 (1860). 



Body large, full, robust ; tentacles rather short, thick, smooth ; 

 the dorsal ones with the eyes far behind their bases. Papillse large, 

 flattened, crowded, arranged in five or six clusters on each side, 

 leaving the middle third of the body bare. Foot broad, with short 

 auricles in front. Mouth-disk large, triangular. Colors : body pale 

 Avhitish, dark in the middle line from the viscera, showing through ; 

 papillse dark ])urplish, with the tips covered with intense white 

 specks. Length, one inch. 



Found at Duck Island, under stones, at low water (^Stimpsoii). 



Section 3. — Cavolina. Branchiae inflated ; angles of foot round- 

 ed ; spawn cup-formed. 



.ffiolis picta. 



Plate XIX. Fig. 282. 



Yellowish white, blotched with a brownish amber; oral tentacles short, stout; 

 dorsal tentacles twice as long, simple, with an amber ring at outer third; branchiaj 

 like an olive-jar, arranged in six or eight series ; foot narrower than body, obtuse 

 posteriorly, anterior angles rounded. 



Eolts pallida, Aldeh aTul Hancock, Ann. Nat. Hist. ix. 35. 



EoUs picta, Alder and Hancock, Monog. Nudib. Moll Fam. 3, pi. 33 (1847). 



Animal yellowish white, sparsely dotted with brownish amber 

 blotches which occasionally coalesce, and a few opaque-white dots. 

 Anterior tentacles quite short and stout ; dorsals twice as long, sim- 

 ple, with an amber ring at the outer third. Branchiae inflated, much 

 like an olive-jar, somewhat compressed, witli a very small interior 

 darkish ]»ith, the tip white, preceded by a ring of yellowish, and 

 punctate as above described ; they are arranged along each side in 

 six or eight series, the anterior one being somewhat clustered and 

 the remainder set upon oblique ridges, four or five on each, the up- 

 per ones large, those towards the abdomen growing gradually shorter 

 and smaller. Foot clear, narrower than the body, rather shortened 

 and obtuse posteriorly ; anterior angles rounded. Length, one half 

 to three fourths of an inch ; breadth, one fourth the length. 



Found in a timber dock in Boston, May, 1842; dredged in five 



