56 AGLAJA—PHILINOPSIS. 
Doridium (Posterobranchea) gemmatum Morcg, Journal de Con- 
chyl., 1863, p. 25; Mal. BI., xxii, p. 175. 
Genus (?) Putiinopsis Pease, 1860. 
Philinopsis Psr., P. Z.S., 1860, p. 21. 
Animal.—Head-disk large, oblong, oval or triangular, not extend- 
ing in advance of the foot. Posterior to the head-disk the body is 
extended in the shape of a convex fleshy lobe, commencing under 
the head disk (which overlaps it), and reaching to or slightly beyond 
the posterior portion of the foot; truncated behind, and the trunca- 
tion surrounded by an undulated or crenated crest. Eyes not visi- 
ble. Mouth proboscidiform between cephalic disk and foot, with or 
without one pair of tentacles on sides of the mouth. Foot large, 
rounded and reflected at the sides. Branchia] plume near the pos- 
terior end of the body, and curving around between the truncated 
end of the foot. Shell concealed in the truncated end. (Pse.). 
My knowledge of this group is limited to Pease’s descriptions here 
reprinted in full. I am disposed to consider it synonymous with 
Aglaja. 
P. speciosa Pease. Unfiqured. 
Lug 
Oblong, smooth. Head-disk about half the length of the animal, 
of an oblong, triangular shape, truncated in front, and corners ob- 
tusely rounded. The mantle lobe is convex, rather narrowed an- 
teriorly and truncated posteriorly, commencing under the head-disk 
and extending slightly beyond the posterior portion of the foot; the 
truncated end is prolonged behind laterally, and surrounded by an 
elevated undulated crest. No visible eyes or dorsal tentacles. Oral 
tentacles small, dilated, truncated, and placed at the sides of the 
mouth. The foot and the head-disk project in advance of the 
mouth, which can be protruded in the shape of a proboscis. Foot 
broad, oval, smooth, rounded and reflected at the sides. Branchial — 
plume single, pinnate, arising from the right posterior end of the 
animal, and curving to the left between the foot and the truncated 
end of the mantle-lobe. Exeretory orifice posterior. Shell con- 
cealed in the truncated end, white, thin, fragile, pellucid, subtri- 
angular, with a curved callous apex ; surface with furrows of growth. 
Color above fawn, spotted and speckled with white; margins more or 
less varied with blackish and yellow; sides paler. Foot purplish 
fawn, and closely freckled with whitish, and broadly margined on 
