— lt a ea 
31 
into a common cavity. Dorsal tentacles moderate in size, rather 
slender, oblong-ovate, obliquely lamellated, stoutly pedunculate, and 
retractile into tubular cavities. Foot large, nearly similarly rounded 
at both ends, projecting posteriorly beyond the mantle, and the 
margins thin and crisped. Labial lobes flattened and dilated. Colour 
above darkish fawn, rather closely veined with palish. Tubercles 
lighter than ground-colour and tipped with dusky. Margins of 
mantle with dark blotches. Dorsal tentacles fawn, with translucent 
peduncles. Branchiz greyish-fawn, remotely spotted with whitish, 
and the external surface of the branches pale, and the inner surface 
dusky. 
Length 33 inches. 
The spawn, which is deposited under the surface of loose stones in 
an irregular spiral coil of a few whorls, is of a faded yellow colour. 
37. Doris RUGOSA. 
Form ovate, rigid, rounded at both extremities and rather the 
widest posteriorly ; above covered with crowded granular unequal 
tubercles, of which some are very large and elevated ; the surface 
on the dorsal region between the tubercles is somewhat rugose. 
Mantle convexly rounded above, entirely concealing the foot, thin 
and rugose along the margins, which are somewhat undulated. 
Branchial plumes five, tripinnate, very large and recumbent, retrac- 
tile, surrounding the vent; at the base and between the branchial 
plumes are five conical elevated tubercles. Anal tube long, cylin- 
drical, tapering and projecting backwards. Dorsal tentacles pinna- 
tifid, lamellated, and retractile into tubular cavities. Oral tentacles, 
none apparent. Mouth simple, between the foot and edge of the 
mantle. Foot narrow, elongate, elliptical, rounded at both ends and 
margin slightly undulated. Colour above darker or lighter purplish 
brown, some fawn colour. Branchial plumes deep brown, fringes 
paler. Beneath the mantle purplish brown, paler towards the mar- 
gins. Foot pale. 
Length 5 inches ; breadth 3}. 
38. Doris F@TIDA. 
Form oval, rigid, convex above, rugose and with a few ridges, one 
of which is in a longitudinal medial line, others transverse, and others 
small and irregular near the margins of the mantle. Margins of the 
mantle thin. Branchial plumes six, tripinnate, and retractile into a 
six-lobed cavity, which has elevated margins. Dorsal tentacles di- 
stant, acutely conic, lamellated, and retractile in a tubular cavity. 
Foot narrow, elongate, oval, wholly concealed by the mantle. Oral 
tentacles small and dilated. Proboscis lobed ; above purplish brown, 
fawn or yellowish brown, with pale ridges, and generally with the 
edge of the mantle tinged with pinkish. Branchiz pale fawn; ten- 
tacles pale orange ; beneath pale yellowish. 
This species occurs at low water on rocky coasts. It emits a 
strong and disagreeable odour. 
