56 AGLAJA-PHILINOPSIS. 



Doridium (Poxterobranchcea) gemmatum MORCH, Journal de Con- 

 chyl., 1863, p. 25; Mai. Bl., xxii, p. 175. 



Genus (?) PHILINOPSIS Pease, 1860. 

 Philinopsis PSE., 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. Branchial 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. Unfigured. 



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. Excretory 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 



