246 ^OLIDIDiE. 



^olis purpurea. 



Eolis purpurea, Stimpsox, Mar. Invort. Gr. Manaii, 25 (1853) ; Check Lists, 4 (1860). 



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

 the dorsal ones with the eyes far behind their bases. Papillae 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 : Inxly pale 

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

 l)ai)illa3 dark purplish, with the tips covered with intense white 

 specks. Length, one inch. 



Found at Duck Island, under stones, at low water (^Sti/upsoti). 



Section 3. — CavoUna. Branchia) 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, Avith an amber ring at outer third ; branchiiB 

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

 posteriorly, anterior angles rounded. 



EoHs pallida, Alpek and Hancock, Ann. Nat. Ilist. ix. 35. 



Eolis pirtu, Alder and Hancock, Monog. IS'udib. Moll Fam. .3, \)\. 33 (1847). 



Animal yellowish white, sparsely dotted with 1)rownish amlier 

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

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

 ple, with ail amber ring at the onter third. Branchias inflated, much 

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

 darkish pith, 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 l»ody, 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, 18-12; dredged in five 



