572 DORIDID^. 



1. G. NODOSA, Montagu. 



Plate Y. Y. fig. 3. 



Doris ?io(/osa, Mont. Lin. Trans, vol. ix. p. 107, pi. 7, f. 2. — Fleming, Brit. 

 Ann. p. 282, 

 „ Barvicensis, Johnston, Ann. Nat. Hist. vol. i. p. 55, pi. 2, f. ll-i;^. 

 Goniodoris nodom, Forbes, Ann. Nat. Hist. vol. v. p. 105.— AtuER and Han- 

 cock, Monog. part 2, fam. 1 , pi. 1 8. 



Body oblong (about an inch in length), sub-prismatic ; 

 white, yellowish, or pink, speckled with opaque white 

 spots. Cloak subquadrangular, carinated in the centre, 

 with a free, scolloped, reflected margin, deeply indented 

 behind. Sides with minute tubercles. Dorsal tentacles 

 clavate, lo-14-laminated on the upper portions; buccal 

 tentacles, obtusely lanceolate. Branchial plumes thirteen, 

 lanceolate, simple ])iunate, forming a complete circle round 

 the tubular vent. 



Common between tide-marks under stones, in numerous 

 localities all round the British and Irish shores. The 

 Goniodoris emarc/inata of Forbes, and the G. elongata of 

 Thompson aj)pear to be varieties of this species. 



2. G. CASTANEA, Aider and Hancock. 



Alder and Hancock in Annals of Nat. Hist. vol. xvi. p. 314, and Monog. 

 part 3, fam. 1, pi. if). 



Body ovate (less than an inch in length), rather broad 

 and depressed, of a reddi.sh or chestnut brown colour, 

 rarely pale, covered with small conical tubercles, spotted 

 with opaque white. Cloak small, carinated centrally with 

 an ample reflected, smooth, sinuous margin, indented 

 deeply behind. Dorsal tentacles rather short, ten to twelve 

 laminated ; buccal tentacles broad, very large, with acu- 

 minated tips. liianchial plumes large, tripinnate, seven 



