Dr. Johnston on Scottish Mollusca. 1 1 7 



Desc. Body half an inch in length, linear-oblong, yellow- 

 ish brown but variable in marking ; the back plane, with a 

 few distant tubercles; the foot tapered to a point behind. 

 Branchiae eight or nine on each side, ovate, muricate, affixed 

 by a narrow base, the three hinder pairs small. Veil above 

 the mouth enlarged, truncate, entire. Tentacula long and fili- 

 form, protruded from a wide trumpet- shaped sheath uneven 

 on the margin. 



2. M. coronata, branchial masses in 4 — 6 pairs. Plate III. 

 fig. 5—8. 



Doris coronata, Turt. Gmel. iv. 78. — Tritonia coronata, Lam. Anim. s- 

 Vert. vi. i. 305. Bosc. Vers. i. 107. Grant in Edin. Phil. Joum. xiv. 

 185. 

 Hob. In deep water amid corallines. Frith of Forth, Dr. Grant. Coast 

 of Berwickshire. 



Desc. Body from three to four lines long, limaciform, of a 

 buff-orange colour, sometimes very pale, clouded and freckled 

 with pink and reddish brown. Mouth with an entire semi- 

 circular veil. Tentacula filiform, extruded from wide open 

 sheaths. Branchiae four or five pairs, very beautiful and large 

 in proportion to the body, subpediculate, pyramidal, muricate ; 

 there appear to be about fifteen papillae to each of the larger 

 masses, and each little papilla has a dark eye-like spot on its 

 apex : the posterior pair of branchiae are minute, and the an- 

 terior pair are less than the second. One of the most lovely 

 mollusks I have ever seen. In one specimen, fully as large as 

 the others, there were three pairs of branchiae only ; in another 

 smaller specimen four pairs ; and in one individual the spots 

 on the apices of the papillae were scarcely visible. The pa- 

 pillae are covered with vibratile cilia, and hence appear rough- 

 ish under the microscope. 



Not having seen Bomme^s figure of Doris coronata, the sy- 

 nonyms may be considered doubtful, but the specific cha- 

 racter of Gmelin seems very descriptive of our animal : " D. lac* 

 tea, subtus hyalina ; papillis dorsi rubro punctati pyramidali- 

 bus utrinque sex apice rubris." From its similarity to the 

 preceding, one is tempted to conjecture that this may be its 

 young, but there are no certain data to determine the fact. I 

 found about a dozen specimens which had concealed them- 



