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. 
Melania recta. M. testd plicatd, attenuata, subcrassd, tenebroso- 
castaned; spird valde elevatd ,; suturis irregulariter impressis, sub- 
canaliculatis ; anfractibus tvedecim, subplanulatis; plicis numero- 
sis; apertura parva, ovatd, ad basirn rotunda, intus ccerulescente; 
columella incurvd. 
Hah. ~S ery 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 costellaris. 
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, revolving 
striae. 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. 
Melania australis. M. testd plicatd, conicd, tenui, diaphand, 
rubiginoso-corned ; spird costatd, prope apicem turbinatd ; suturis 
impressis; anfractibus septem, convexis , ad basim striatis; plicis 
numerosis; apertura 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 striae. 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. testd plicatd, fusiformi, crassd, corned, 
inf erne lineatd; spird acuminatd; suturis irregulariter impressis ; 
anfractibus novem, convexiusculis, ad apicem mucronatis, in medio 
concavis ; plicis numerosis, crebris ; aperturd constrictd, elongatd, 
intus alba; labro superne incisd ; columella' lavi, 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. 
1 he 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 
co\er the whole surface in this species, except where it is superseded 
