126 DORIDID&. 
others; it extends considerably beyond the foot; dorsal tentacles 
slightly conical, yellow and strongly laminated above, smooth, trans- 
parent, and nearly colourless below ; branchial plumes nine, tripinnate, 
recurved, large and spreading; they are transparent, obscure white, 
with a purple or lilac tinge at the edges ; faintly freckled, and can be 
completely retracted within a cavity, the margins of which close over 
them ; head rather small, with two small tubercular oral tentacles ; foot 
broadish, rounded and grooved in front, less broadly rounded behind, 
and of a lemon-yellow or orange colour, with the liver appearing 
through the centre ; two or three inches long, but occasionally reaching 
to four or even five inches (A. & H.) 
Northern European Coasts. Western North America. New 
Zealand. (Abraham.) 
D. granulosa, Abraham; P.Z.S., 1877, p. 253, pl. xxix, f. 1-3. 
Body oblong, elliptic, not very depressed ; mantle ample, presenting a 
granular appearance from a close covering of small, sessile, unequal 
rounded tubercles; rhinophores minutely laminated, rather slender, 
sub-conical or pyriform (in one specimen the apices are slightly 
enlarged and rounded ;) their cavities are wide, and have the margins 
produced into short tuberculated and denticulated sheaths ; branchiz 
eight, rather short, slender and spreading, bipinnate, surrounding the 
short tubular anus in a circle interrupted behind ; the two hindermost 
plumes are deeply divided; the margin of their common cavity is 
nearly smooth ; oral tentacles small, free, flat and linear ; foot oblong, 
truncated and transversely grooved in front, with the upper lamina 
deeply notched, the lower slightly so; the posterior extremity is rounded, 
and the border flattened; mantle spicules small, very short, and spindle- 
shaped ; odontophore broad, with numerous lateral spines, which are 
comparatively large and recurved at an angle; colour (in spirit) dirty 
yellowish (Abraham.) 
Length (in spirit) ‘68; breadth, -45 inch. 
D. longula, Abraham, P.Z.S., 1877, p. 253, pl. xxix, fi 4-5. 
Body oblong, rounded at both ends; mantle ample, covered with a 
minute sub-equal granulation ; rhinophores short, broad, and aparently 
conical ; their cavities with the apertures simple, and not produced ; 
branchize twelve, small, slender, bipinnate, in a complete circle round 
the tubular anus; retractile in a wide cavity with minutely and irregu- 
larly denticulated margin ; oral tentacles small and linear ; foot oblong, 
rounded at the ends, transversely grooved in front, with both laminz 
notched ; it reaches behind to the edge of the mantle, and its border is 
free and flattened ; colour (in spirit) a dirty cream (Abraham.) 
Length (in spirit) -73 ; breadth, ‘27 inch. 
D. museula, Abraham, P.Z.S., 1877, p. 256, pl. xxix, f- 6-7. 
Body elliptical, convex ; mantle covering the head and the foot, but not 
laterally flattened or extended into a border; it is covered above with 
very small, close, equal,. elongated, linear or sub-clavate tubercles ; 
rhinophores (not visible in the specimen) retractile into cavities of which 
the mouths are produced into short tuberculated sheaths; branchize 
