Fam. 3, Plate 1, a. 



EUMENIS MARMORATA, Alder and Hancock. 



E. olivacea, brunneo alboque marmorata : velo parvo, tuberculato : tentaculis clavatis, intra vaginas 

 arctas, simplices, retractilibus : branchiis parvis, papulosis, ad marginem repandum dorsi utrinque 

 dispositis. 



Ewmenis marmorata, Aid. and Hanc. in Ann. Nat. Hist. v. 16, p. 311. 



Hab. Deep water, Torbay, J. A. 



Body rather more than half an inch long, nearly linear, quadrilateral, tapering to an 

 obtuse point behind, olive or yellowish brown, streaked and spotted with dark chocolate 

 brown and white. Head rather squared in front, covered by a slight veil, with a few 

 tubercular points most conspicuous at the sides. Tentacles placed rather forward on the 

 back, ovato-clavate, closely laminated on the upper part, with about twenty plates; the 

 apex produced and truncated. They are of a yellowish fawn-colour; the lower partis plain, 

 and inclosed in rather tight sheaths, with plain margins, extending about one third the 

 height of the tentacles. The sides of the body are produced into a pallial expansion, which 

 undulates into three or four lobes, the margin set with irregular papillose branchiae of a 

 fawn-colour with pale edges ; a few separate papillse extend down to the tail. Down the 

 centre of the back is a line, double in front, of dark chocolate brown or nearly black streaks 

 and spots, commencing in a horseshoe-formed mark behind the tentacles, and reaching to 

 the tail : this line is bordered with streaks of opake white on each side, sending off lateral 

 branches. The sides of the back are olive or yellowish brown, with dark brown and white 

 spots. On the sides of the body below the branchiae several interrupted streaks of dark 

 chocolate brown and opake white extend from the head to the tail ; below these the sides 

 are transparent white. Foot nearly linear, white ; the anterior portion produced into long- 

 tentacular processes at the sides, grooved at the margin, and deeply notched in the centre. 



A single specimen of this rare and curious nudibranch was dredged near Berry Head, 

 in Torbay. It was a little injured, and lived only a short time after being brought on shore, 

 so that we had no opportunity of observing its habits, and the drawing and description are 

 consequently not so perfect as we could have wished. In form it is less elegant than is 

 usual in this family, but the colours, though sober, have a pleasing effect from the variety 

 and contrast of the markings. 



; '6'~ 



Figs. 1, 2, 3. Different views of Eumenis marmorata. 

 4, 5. Front and side views of a tentacle. 



