185 
terminate on the angle, and are disposed to be nodulous there. The 
aperture is rounded, angular above, and not quite one-third the length 
of the shell. The base of the shell is rounded. 
Me ania ReEcTA. M. testd plicatd, attenuatd, subcrassd, tenebroso- 
castaned ; spird valde elevatd ; suturis irregulariter impressis, sub- 
canaliculatis ; anfractibus tredecim, subplanulatis ; plicis numero- 
sis ; aperturd parvd, ovatd, ad basim rotundd, intus cerulescente; 
columelld ineurvd. 
Hab. Very small streams, Siquijor and isle of Negros, Philippines. 
Length 1-7, diam. *5 of an inch. 
Remarks.—In many of its characteristics this species is like the 
M. costellaris. It differs entirely, however, in the enlargement of the 
last whorl, the angle on the superior part of it, and in the channel 
below the suture, which are important characters in the cos¢e/laris. 
Nor has it the minute revolving lines. The folds are remarkably 
regular and distinct, and number about eleven on each whorl! in the 
eight specimens under examination. On two individuals the epi- 
dermis remains quite perfect, and is deposited in regular, revolvin 
striz. The aperture is about one-third the length of the shell; it 
is rounded below and angular above, where it is slightly set off from 
the body of the whorl. The columella is but slightly curved. 
Mevania austrauis. WM. testd plicatd, conicd, tenui, diaphand, 
rubiginoso-corned ; spird costatd, prope apicem turbinatd ; suturis 
impressis ; anfractibus septem, conveais, ad basim striatis ; plicis 
numerosis ; aperturd magnd, ellipticd, intus salmonid ; columella 
tortd ; labro superne emarginato. 
Hab. Victoria river, North Australia. 
Length -9, diam. *4 of an inch. 
Remarks.—This is a very distinct little species, and the sudden 
enlargement of the third whorl below the apex gives it a somewhat 
turbinated appearance. The folds do not on the lower whorl reach 
the suture, and above and below these folds there are minute re- 
volving striz. The aperture is more than one-third the length of 
the shell. The outer lip is slightly crenulate and remarkably in- 
curved near to its junction with the body whorl. 
MELANIA TORNATELLA. M. ¢estd plicatd, fusiformi, crassd, corned, 
inferne lineatd ; spird acuminatd ; suturis irregulariter impressis ; 
anfractibus novem, convexiusculis, ad apicem mucronatis, in medio 
concavis ; plicis numerosis, crebris ; aperturd constrictd, elongatd, 
intus alba ; labro superné incisd ; columelld levi, crassd, contortd, 
reflexd. 
Hab. Shallow rivers, Tanhay, isle of Negros, Philippines. 
Length -9, diam. -35 of an inch. 
Remarks.—This belongs to a very remarkable group of Melania. 
The emargination of the outer lip, above the middle of the whorl, is 
strikingly characteristic of the group. It causes a slight flatness or 
convexity of the whorl, as well as a curve in the numerous ribs, which 
cover the whole surface in this species, except where it is superseded 
