50 AGLAJA. 



expanded in front, so as to project over the foot and mouth, truncate 

 behind. Mantle small, entirely concealing the shell, at its posterior 

 end 2 lobed and with a large gaping orifice. Foot large with ample 

 side-lobes, which are folded up to the sides of the head-disc and 

 mantle, leaving, however, the back exposed. Shell quite internal, 

 triangular, spire minute, inner lip with a small spoon-shaped pro- 

 jection. Branchiae minute, situated far back on the right side under 

 the mantle. Gizzard very large and muscular, without calcareous 

 plates. Odontophore apparently wanting. I assume that the 

 proper position of this animal is with the Philinidce, with which it 

 agrees in most of its characters. It differs, however, in having no 

 odontophore, and in the gizzard not being strengthened with calcare, 

 ous plates. Aglaia (of Renier), appears to be its nearest ally ; but I am 

 unable to place it in that genus, as it differs from the species figured 

 in Adams' " Genera " in being much more elongated, in the cephalic 

 disc being larger and projecting beyond the foot, in the branchiae 

 being smaller and always concealed by the mantle, and in the side- 

 lobes of the foot being closely appressed to the side of the animal, 

 and not spreading. 



Auckland Harbor and near Dunedin, New Zealand, in tide pools. 



Melanochlamys cylindrica CHEESEMAN, Trans. N. Z. Inst. xiii, p. 

 224 (1881). 



A. GIGLIOLII Tapparone-Canefri. PI. 1, fig. 6. 



Body oblong, as much as 32 mill, long, 12 mill, wide; head-shield 

 ovate-oblong, large, more or less bilobate behind ; posterior body 

 smaller, subquadrate, deeply bilobed behind ; side margins (para- 

 podial lobes) free, very narrowly edged with brown. Foot ovate, 

 large, wider than dorsal lobes. Color of specimens preserved in 

 alcohol buff-white, irregularly reticulated with brown and ashy, the 

 head-shield having a median longitudinal pale line. Shell internal, 

 delicate, vitreous, very transparent, resembling that of D. carnosum 

 in form. 



Japan. 



Aglaia giglioliiT.-C., Zool. Viag. Magenta, p. 110, pi. 1, f. 18 



(1874). 



A. NUTTALLI Pisbry, n. sp. PI. 6, figs. 37, 38. 



Alcoholic specimen uniform black-brown above, sole the same 

 color, but with faintly discernable sparse light maculation. Head- 



