Fam. 3, Plate 45 (supplementary). 



Figs. 1 to 3. 

 DOTO PINNATIFIDA, Montagu, sp. 



D. flavescens vel olivacea, fusco et nigro maculata; velo arcuato, fastigiis 2 lateralibus ; branchiis 

 utrinque 7 — 9 ovato-conicis, tuberculis gracilibus, nigro-punctatis, obsessis. 

 Doris pinnatifida, Mont., in Linn. Trans., v. 7, p. 78, pi. 7, f. 2, 3. 

 Tritonia pinnatifida, Mem., Brit. Anim., p. 284. 

 Hab. Devonshire coast, Montagu. St. Peter's Port, Guernsey, /. A. 



Body four tenths of an inch long, nearly linear, slender, of a yellowish olive colour, 

 inclining to rufous on the sides, and profusely spotted with brown and black. Tentacles 

 filiform, moderately long, yellowish, or nearly colourless, issuing from sheaths a little expanded 

 at the top, and surrounded at the edge with one or two rows of black spots ; there are also a 

 few black spots on their sides, running into vertical lines posteriorly. Veil a good deal 

 arched and rather deep, spotted with brown and black, especially towards the margin. 

 There is an elevated ridge running from the base of each tentacle to the anterior margin of 

 the veil ; a row of black spots extends along the inside of each ridge, and these are continued 

 less conspicuously between the tentacles, joining two irregular bands of brown and black 

 spots that run down the back to the tail. The intervening space on the back is spotted and 

 marbled with brown, and contains two or three scattered tubercles with black tips. 

 BrancJiia from seven to nine pairs, extending very close to the tail. They are ovate- 

 conical, slightly pedunculated, and set with five or six transverse rows of slender papillary 

 tubercles, commencing a little from the base, with a terminal one at the apex. The tubercles 

 are slender and very extensile, and are of a pale yellowish colour, each surmounted by a 

 black spot. The general colour of the branchiae is a brownish olive, having a granular 

 appearance in the centre : the base is reddish. The sides of the body are pale greenish 

 yellow, with a reddish tinge towards the centre. They are spotted and marbled with 

 blackish brown, forming a line near the foot and another at the base of the branchiae, where 

 there is also a row of small papillary tubercles of a palish hue, with black tips, extending 

 down each side to the tail. Foot narrow, a little arched in front, with the sides slightly 

 produced and rounded. 



The re-discovery of this long-lost species of Montagu settles the doubts that had been 

 entertained respecting its distinctness from D. coronata and D.fragilis, to each of which it has 

 been referred. Not succeeding in our attempts to find it on the Devonshire coast — the 



