152 LA.ND- AND FRESHWATER SHELLS. 



show that they vary in form. In nearly all the specimens 

 the flames of the upper whorls are traversed by a narrow 

 zone of the ground-colour; the yellow colour of the last 

 whorl is more or less bright. 



A juvenile specimen from Massoe has the space near 

 the umbilicus rose-colour , with two brown spiral bands , 

 beneath the periphery. This and two adult specimens from 

 the same locality, are in the finest condition, the other 

 are more or less bleached. 



11. Amphidromus reflexilahris , n. sp. 



Shell sinistral , elongately conical , slightly striated , 

 imperforated, varying much in colour, yellow with green 

 streaks , pale or orange yellow , with the upper whorls 

 yellowish or brown , apex yellow or black brown , upper 

 whorls nearly always with brown flames or blotches , 

 lower whorls commonly with a white zone beneath the 

 sutures ; whorls 6 , slightly convex ; aperture elongately- 

 ovate , angular above , angularly rounded and slightly 

 effused beneath , occupying with the peristome about half 

 the length of the shell, interior white; lip strongly reflected , 

 so as to reach and even partly to cover the backside of 

 the shell and forming a canal having the appearance of 

 a very thick peristome; columella thickened, like the lip 

 of a pale rose-colour, margins connected by a thin callosity. 

 Alt. 39V2, diam. maj. I8V2 » ap. alt. inch perist. 29V2 mill. 

 » 42 , » » 21, » » » » 21 » 



» 50, » » 23V2, » * » » 27 » 



Locality: Amarassi, Timor. 



This species varies very much in size and colour , no two 

 specimens being alike; the largest (somewhat bleached) 

 one is totally yellow excepted the peristome, the smallest 

 is yellowish orange, with white sutural zone, a dark apex 

 and a few faint brown blotches ranged in two rows on 

 the upper whorls ; a third full-grown specimen and a 

 juvenile one are yellow with more or less green, disposed in 



JS^otes frora the Leyden IMiiseuixi , "Vol. XI"V. 



