^OLis. 245 



their contents could be distinctly seen. Even on those a little para- 

 site with a circular body and a large quadrate head, fringed around 

 with vibrating cilia, was distinctly noticed. Another parasite was 

 quite abundant upon the branchite, coursing up and down its sides 

 ra])idly, with ample room and verge enough. I have met with no 

 notice of anything of the kind, nor have 1 seen any figure like it. 

 Tlio nearest approach is in Eiicyc. Meth. pi 12, Jig-. 44-40 {Trich- 

 oda prcsceps). It adhered by a small fringed disk, attached to wliich 

 ])j a short stem was an expansion somewhat like a Calla leaf, with 

 long incmwed fringes at the edges. 



^olis stellata. 



Plate XIX. Figs. 271, 278. 



Body slender, pale Avhite ; dorsal tentacles wrinkled transversely, long, but 

 shorter than oral ; branchi;^ few, arranged in about five clusters on each side, 

 those of second and third being longest, giving a star-hke aj^pearance to the an- 

 imal when rolled up ; foot strongly auricled in front. 



Eolis stellata, Stimpsox, Mar. Inv. Gr. Manan, 25 (1853), 

 yEulis stellata, Stimpson, Clieck Lists, 4 (IStiO). 



" Body small, slender, elongated, pale white, pellucid ; head mth 

 a flake-white patch above in front of the oral tentacles. Dorsal ten- 

 tacles long, but shorter than the orals, slender, wrinkled trans- 

 versely, especially in contraction. They arise very near together, 

 and bear the prominent black eyes at their bases l^ehind. Oral ten- 

 tacles very long and slender, smooth and gracefully curved. Papil- 

 la or branchise rather few in number, long and slender, arranged 

 in about five clusters on each side, those in the second and third 

 clusters being longest. Foot narrow, pointed behind, and strongly 

 auricled in front. Colors : papillae briglit crimson, tipped with a 

 ring of opaque white ; tentacles pale pink near their bases, with 

 tlieir anterior halves white." QStimpson.^ Length, two fifths of 

 an inch. 



Found at Grand Manan, under stones at low-water mark. 



Hescmbles somewhat ^. ru/ibranchia/is, Johnst., but its foot is 

 not so lung, nor its dorsal tentacles so tapering ; and its papillge 

 are fewer and longer. When disturbed, it rolls itself up so that its 

 branchiae project in all directions like the rays of a star. 



