MELANIIDE. 227 
Well represented by M. Brot’s fig. 2 and Reeve’s figs. 57 and 
58, but smaller and evidently not quite adult. It is important 
to be able to establish the true habitat of this species, as I am 
now able todo. The species resembles in many respects the 
form I have catalogued as M. wrea? Reeve, in coloration, 
size, and the characteristic, forcibly reflected, thickened columella 
[exactly similar in both]; the apical spiral striation is, however, 
less distinct, but, above all, the whorls, instead of being unusual. 
ly convex, are almost cylindrical, as in Reeve, fig, 57. The last 
whorl is distinctly subangulate, as mentioned by M. Brot in 
his invaluable work. The brown maculations resemble those 
of Reeve, fig. 57, though rather less distinct. 
var. perstriatula, nov. 
2 Guam; exc, Prof. W. Newcomb [labelled “ M. hastula”’]. 
Wonderfully close to the preceding, but with more developed 
and regular spiral striation, only obsolete in the middle of the 
last two whorls; coloration uniform, last whorl subangulate, 
upper whorls more attenuately produced. Long. 30, diam. 
8 mil.; anfr. 12. 
8. Melania plutonis. 
Melania plutonis, Hinds, Ann. Mag. XIV, 1844, Fiji; Reeve, Icon. Sig. 36 ; 
? =U. plicatilis, Mousson, J. de C., 1870 [jw], and Brot, Conch. 
Cab., pl. 18, figs. 9 and 9a, : 
8 Navigators’ Islands; coll. Dr. C. E. Tonnerre [A. s. B,J. 
9. Melania zrea [?], 
Melania area, Reeve, Conch. Icon. 1859, fig. 64, Philippines; Brot, l. c., 
pl. 19, fig. 4a. [certe]. 
12 Luzon [?]; coll. Baron F. von Richthofen. 
Long. 35, diam. 101 mil. ; anfr. 10. 
This can scarcely be the WM. tristis of Reeve, as the upper 
whorls are spirally striate, and the columella is strongly callously 
incurved, even more so than in Mousson’s pl XI, fig. 5 [“ M. 
aspirans”]; it differs from the latter by the more ventricose 
last whorl, the shorter and more convex spire, &c.; the last 
whorl is smooth, scarcely striate even at base; slightly macu- 
lated with brown streaksin young specimens only. Brot’s pl. 19, 
