PARAPLYSIA. i TUSs 
variegated and ocellated color-pattern and short swimming lobes, 
indicate a distinct species, however. 
Borneo. 
Placobranchus ocellatus (Van Hasselt), M. E. Gray, Figs. Moll. 
Anim., 1850, iv, p. 35; ii, pl. 179, left hand figure (from Adams’ 
drawing).—Aplysia ocellata A. Ap., Ann. Mag. N. H. (38), viii, p. 
141 (August, 1861); name only. Not Aplysia ocellata d’Orbigny. 
Genus II. PARAPLYSIA Pilsbry, 1895. 
Paraplysia Pixs., Man. Conch. XV, pt. 62, p. 64 (Nov. 26, 1895). 
General form oval ; buccal tentacles rather large, widely separated 
and pointed ; rhinophores small, conic, close together, situated be- 
tween the anterior ends of pleuropodial lobes. Pleuropodia arising 
at the anterior third of the animal’s length, well separated at their 
origin and throughout, uniting only at their union with the foot very 
near its posterior extremity. Mantle large, posterior, exposed, with 
a posterior excurrent siphon, and apparently covering the gill; the 
genital pore slightly in front of its anterior edge, not covered. 
Shell about a third the length of body, concave, subquadrate. 
This very well characterized genus is known by Dr. Gilchrist’s 
paper cited and quoted below. Unfortunately the presence and 
‘nature of the mantle foramen and the opaline gland are not stated ; 
the dentition is unknown, and the shell has not been figured. The 
latter apparently resembles that of Tethys. 
The remarkable features of this type are: the posiion—unique in 
the Anaspidea—of the rhinophores between the anterior ends of 
pleuropodial lobes, the latter being completely free ; the posterior 
situation of the mantle, and the short, oval form of the body. The 
posterior end of foot is free from the visceral mass, which overhangs 
it. 
P. PIPERATA Smith. Pl. 21, fig.12. 
Animal (in spirit) olivaceous, minutely and closely dotted every- 
where, with the exception of the foot, with black ; hinder third part 
of the body somewhat paler than the rest, from which it is marked 
off by a blackish band passing right round the animal. Lobes of 
the mantle narrowish in front where they arise quite close to the 
posterior tentacles, considerably dilated behind. Oral tentacles 
large, long, and pointed; posterior small, close together, conical. 
