60 DOTONID.E. 



Genus DOTO [*], Oken. 

 [PL II. f. 5.] 



BODY nearly linear: tentacles linear, smooth, retractile within 

 plain sheaths: branchial processes elliptical, strongly muricated, 

 set in a single series on each side of the back : head with a 

 slight veil : vent latero-dorsal : odontophore narrow, consisting 

 of a single denticulated plate with a central spine : no jaws. 



1. DOTO FRA'GILIS, Forbes. 



Melibaa (Doto} framlis, Forb. Mai. Mon. p. 4, pi. 1. f. 4. D.fragilis, A. 

 & H. Brit. Nud. Moll. fam. 3, pi. 5. 



BODY oblong, of a uniform yellowish -brown or olive, with 

 occasionally a few tubercular spots on the back and sides : 

 tentacles slender, tapering above, issuing from shortish expanded 

 sheaths : head with a short veil, produced a little at the sides : 

 branchial processes stout, conical, with about 10 rows of tuber- 

 cles and pointed tips ; there are about 9 close- set papillae on 

 each side, reaching nearly to the tail : foot linear and slightly 

 notched in front. L. 1. 



HABITAT : Not uncommon in the [Laminarian as well as the] 

 Coralline zone on nearly all parts of our coast. [W. Sweden, 

 (Loven).] 



This is the Melibcea pinnatifda of Johnston. 



2. D. PINNATI'FIDA, Montagu. 



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

 pinnatifida, A. & H. Brit. Nud. Moll. fam. 3, pi. 45. f. 1-3. 



BODY elongated, nearly linear, yellowish or olive, spotted with 

 brown and black : tentacles moderately long, plain, issuing from 

 sheaths which are a little expanded at the top, and surrounded 

 by a row of black spots : head with an arched veil : branchial 

 processes ovate-conical, slightly pedunculated, with about 6 

 whorls of ^slender papillose tubercles, and a terminal one at 

 the apex, each tipped with black ; there are from 7 to 9 pa- 

 pillae on each side of the back, extending nearly to the tail ; 



[ * A sea-nymph.] 



