252 . MR. P. Ss ABRAHAM ON THE [ Mar. 6, 
Length (in spirit) 72 millims., breadth 46, height 14; width of 
mantle-expansion 13 laterally, 22 posteriorly. 
Hab. 2 
Mantle-spicules rather small, slender, and spindle-shaped. 

Doris VEsTITA, sp. nov. (Plate XXVIII. figs. 5, 6.) 
General form elliptic, very convex on the back. Mantle ample, 
fleshy, widely expanded all round, in broad waves or folds at the 
border, covered closely on the upper surface with small, elongated, 
conical or slightly clavate, semitransparent tubercles, which are 
somewhat larger upon the marginal expansion. Rhinophores clavate, 
laminated for four fifths of their length, the lamine being diagonal, 
about 14 in number, and lying between slight. anterior and posterior 
longitudinal depressions ; the apices are truncated, and bear a broad 
simple terminal style ; the cavities into which they are retractile are 
produced into short tuberculated sheaths with toothed edges. 
Branchize 7, short, broad, tripinnate, not very distinctly separated 
from each other, and set in a circle, interrupted behind, around a 
tubular anus: the wall of the cavity into which they are retractile is 
somewhat raised and irregularly denticulate at the margin’. Oral 
tentacles small, elongated, and conical. Foot about one third as 
broad as the mantle, rounded in front, with a deep transverse groove, 
the upper lamina of which is mesially divided ; the posterior end is 
acuminated, and does not extend as far as the mantle-edge. 
The general colour of the spirit specimens is a yellowish or light 
brown, with an orange or pinkish tinge upon the foot. 
Length (in spirit) 42 millims., breadth 32, height 15. 
Hab. Straits of Magellan. 
The pallial spicules are slender, comparatively rather small, toler- 
ably straight, and numerous. 
The odontophore is very small: there are about 13 transverse 
rows of numerous elongated recurved spines, none of them central in 
position. 
Doris MURREA, sp. nov. (Plate XXVIII. figs. 12-14.) 
Body elliptic, oblong, rather convex. Mantle ample, cartilaginous, 
the border expanded and rather thick; the surface granular and 
gritty to the touch from the close covering of minute, unequal, 
rounded, hard tubercles. Rhinophores far forward, small, clavate, 
the lamine proceeding from a posterior longitudinal ridge; their 
cavities are with slightly raised and minutely denticulated margin. 
Branchiz 6, slender, bipinnate, set far back, closely around a very 
small tubular anus, in a deep cavity, which has the margin raised, 
denticulated, and completely contractile. Oral tentacles small, coni- 
cal, and pointed. Foot oblong, transversely grooved in front, with 
the upper lamina rather enlarged and notched. 
1 Tn one specimen the branchiz seem to be more numerous in consequence of 
their indistinct separation and of the prolongation of their lower branches. The 
sheath of the branchial cayity is also more deeply and distinctly toothed. 
