BRITISH NUDIBBANCHIATE MOLLUSCA. xi 



(29) EOLIS PURPURASCENS. 



Eolida purpurascens, Flem., Phil. Zool., v. 2, p. 470, pi. 4, fig. 2. Brit Anim., p. 285. 

 Hab. Frith of Tay, Rev. Dr. Fleming. 



" Five bundles of Jbranchiae on each side. Tentacula linear. Length about an inch, 

 slender, pointed behind, rounded in front, of a pink colour. Anteal tentacula shorter than 

 the superior ones, which have the eyes behind. Three filiform branchiae in each bundle." 



This description from Dr. Fleming's ' British Animals,' and the figure in his l Philosophy 

 of Zoology,' afford all the information we possess concerning this rare Eolis, which appears to 

 be different from anything we have met with. The figure represents the oral tentacles very 

 short ; the papillae are also short and subclavate, and are set in rather distant rows. 



(30) Eolis o&rulea. 



Doris cmrulea, Mont., in Linn. Trans., v. 7, p. 78, pi. 7, figs. 4, 5. 

 Montagua carulea, Flem., Brit. Anim., p. 285. 



" With a linear body of a green colour, covered with large, blue, clavated tubercles, 

 greenish at their base, and tipped with orange ; these are disposed in several transverse rows : 

 tentacula four, subfiliform, green : eyes placed at the base of the hindmost tentacula ; between 

 the second and third row of tubercles are two pink oval vesicles on the back, a little 

 inclining to one side. Length a quarter of an inch." Montagu, loc. cit. 



We have not succeeded in our search for this pretty species on the Devonshire and 

 Cornish coasts, and can therefore add nothing to the above description. The two pink oval 

 vesicles mentioned are evidently the ovigerous vesicles of a parasite of the Lernea tribe that 

 infests these animals. 



(31) EOLIS AMETHYSTINA. 



Eolis amethystina, Aid. and Hanc, in Ann. Nat. Hist., v. 16, p. 316. 



Body yellowish, slightly depressed. Oral and dorsal tentacles of a yellowish tinge, the 

 latter twice as long as the former, bases approximating, points fine and spreading. Branchiae 

 elliptical, much inflated one way and somewhat depressed the other, set in nine or ten rows of 

 four papillae each ; the gland linear, purple, granulated ; apices with a broad ring of pale 

 orange-red. Foot transparent, linear, rounded in front, and a little widened for a considerable 

 way backwards. Length three eighths of an inch. 



Found under a stone at low-water mark, Cullercoats, A. H. 



This is a critical species coming very near to E. tricolor, from which it differs principally 

 in the greater length of the tentacles, and in having the papillary gland purple throughout its 

 entire length, and strongly granulated. The specimen was taken in October, and as it did not 

 contain spawn it is difficult to say whether or not it was adult. 



(32) Eolis Farrani. 



This species has lately been found in considerable abundance at Burghead, on the Elgin 

 coast, by Mr. Murray. The Scottish specimens are generally of a purplish-violet tinge on the 

 body and papillae. This is probably the normal colour, and the individual from which the 

 drawings in our plate were taken must therefore be considered a white variety, examples of 



