Dr. Johnston on Scottish Mollasca. 55 



6. D. nodosa, "cloak with four equidistant papillae on each 

 side the medial line." Fleming. 



Doris nodosa, Montagu in Linn. Trans, ix. 107. pi. 7. fig. 2. Fleming in 

 Edin. Encyclop. xiv. 618. Pen. Brit. Zool. iv. 85. Flem. Brit. Anim. 

 282. 



Hah. "Among the rocks at St. Andrew's," Rev. Dr. Fleming. 



Desc. 



7. D. nigricans, ei cloak thickly covered with short lan- 

 ceolate tubercles ; branchial plumes about eight in number/' 

 Fleming. 



Doris nigricans, Fleming in Edin. Encyclop. xiv. 618. Flem. Brit. Anim. 



283. 

 Hah. " Zetland," Rev. Br. Fleming. 



Desc. " Length about half an inch, pale, freckled with 

 dusky; cloak emarginate anteriorly ; sheath of the superior ten- 

 tacula notched in the margin." Fleming. May not this be a 

 variety of D. pilosa ? 



** Body prismatic. 



8. D. Barvicensis, body smooth; branchial leaflets eight, 

 plumose. Plate II. fig. 11 — 13. 



Doris electrina ? ? Pen. Brit. Zool. iv. 83. pi. 26. fig. 1. Stew. Elem. 



i. 387.— D. bilamellata ? ? Turt. Brit. Faun. 134. 

 Hah. Amongst corallines in deep water. Coast of Berwickshire, rare. 



Desc. Body prismatic, -^ths of an inch long, about one-third 

 as broad, of a white wateiy colour irregularly clouded with sul- 

 phur-yellow and pink, (the latter dependent on the viscera,) 

 and sprinkled all over with minute white dots. Back smooth, 

 the cloak adnate, thickened at the sides, where it forms a sort 

 of narrow membranous rim. Sides abrupt, smooth. Foot 

 elongated beyond the cloak and tapered to an obtuse depressed 

 tail, white, with a yellowish medial line and a thin pellucid 

 edge, the anterior angles produced into two distinct tentacular 

 processes. Dorsal tentacula cylindrical, yellowish, the upper 

 half lamellated with the shaft lengthened into a small mucro ; 

 they issue from wide sheaths emarginate on their inner sides. 

 Branchial leaflets eight, when moderately extended like papillae 

 or tubercles, but when fully expanded they are somewhat plu- 

 mose and encircle the prominent tubular vent, from which 

 white lines radiate to the branchiae : just behind the branchial 



