Lond 
PLEUROBRANCH FA. Dent 
long and 4 in diameter, with the eggs in several rows. The species 
is not common below 200 fathoms. (Verrill). 
Closely resembles Pleurobranchea Nove Zealandie in form and 
color. The latter is a littoral species. 
Pleurobranchea tarda V., Amer. Journ. Sci., (3), xx, p. 898, 392 
(Nov., 1880) ; Proc. U.S. Nat. Mus., iii, p. 384 (Dec. 21, 1880); 
Trans. Conn. Acad., v, p. 546, pl. 58, f. 26; U.S. Commission of 
Fish and Fisheries, pt. xi, Rep. of Commissioner for 1883, appendix 
D; p. 571 [69], pl. 28, f. 105. 
The figure represents the dorsal aspect, two-thirds natural size, 
genitalia protruding. 
P. MACULATA Quoy & Gaimard. PI. 53, figs. 88, 89. 
Body thick, a little swollen above, covered with low wrinkles. 
Color dirty white, with light brewn spots; sole yellowish ; foot wide, 
rounded at the two ends, and projecting beyond the mantle behind. 
Veil continuous with mantle, wide, arcuate, crenulated and terminat- 
ing in two points; surmounted behind by the two short, auriform 
tentacles. Gill fusiform, free at the end, formed of parallel and 
oblique foliations, generally uncovered. Penis almost always pro- 
jecting, large and 4 or 5 lines long. Anus opens above and past the 
middle of the gill. Mouth at the end of a small rostrum. 
Port Western, Jervis Bay, and all this southern part of Australia, 
in 9-10 fms. 
Pleurobranchidium maculatum Q. & G., Zool. Astrolabe, ii, p. 301, 
pl. 22, f. 11-14. 
P. NOVEZEALANDI& Cheeseman. PI. 53, fig. 87. 
Body oval, convex, thick and fleshy, smooth and lubricous to the 
touch, but the whole surface nevertheless covered with minute 
puckers and folds. Color light-grey, copiously streaked with irre- 
gular anastomosing lines of dark greyish-brown, and sprinkled with 
numerous minute and almost microscopic white dots. Mantle 
smooth, not nearly so long as the foot, and not concealing the bran- 
chi, rather broader on the right side; oral veil broad, extending 
over and concealing the mouth, in front semicircular, and with a 
delicate fringed margin ; but at each side produced into a short ten- 
tacle-like lobe ; mouth large, round, in a state of rest concealed in 
the sulcus between the oral veil and the foot, but capable of being 
greatly protruded in a proboscidiform manner ; buccal plates two, 
large, finely and regularly reticulated or faceted ; odontophore broad, 
with numerous rows of similar unciform teeth ; tentacles dorsal, wide 
