MELANIID2E. 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 to do. The species resembles in many respects the 

 form I have catalogued as M. cerea ? 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; ex c. Prof. W. Newcoinb [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. fig. 36 ; 

 ? =M. plicatilis, Mousson, J. de C., 1870 [/.], and Brot, Conch.' 

 Cab., pi. 18, figs. 9 and 9a. 



8 Navigators' Islands; coll. Dr. C. E. Tonnerre [A. S. B.]. 



9. Melania serea [?]. 



Melania aerea, Reeve, Conch. Icon. 1859, fig. 64, Philippines ; Brot, I. c., 

 pi. 19, fig. 4a. [certe]. 



12 Luzon [?] ; coll. Baron F. von Richthofen. 

 Long. 35, diam. 10| mil. ; anfr. 10. 



This can scarcely be the M. 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 streaks in young specimens only. Brot's pi. 19, 



