148 LAND- AND FRESHWATER SHELLS. 



5. Nan in a Stuartiae Sowerby. 



Martens , Ostas. Landschn. p. 208. 



Localities: Lahoeroe and Fialarang, central Timor. 



Two specimens belong to the typical form , as they agree 

 sufficiently with the measurements given by von Martens; 

 another full-grown specimen and a younger one belong 

 to a more depressed form. The typical specimens are 

 richly banded , like fig. 462 of Reeve's Conchologia Iconica 

 (Helix) '^ two juvenile specimens seem to belong to the type ; 

 the smallest has a conspicuous angle at the periphery. 



The depressed specimens difier from the type in having 

 less bands, especially the full-grown one, which has only a 

 narrow band at the suture, a broader one at the periphery 

 and three fainter ones towards the umbilicus; the mea- 

 surements of this specimen are: 



Diam. maj. 431/2 , min. 37, alt. 28 , ap. lat. 23, alt. 22 mill. 



The locality of Nanina Stuartiae^ which remained doubtful 

 (cf. V. Martens in his recent publication on the Mollusca 

 collected by Prof. Weber, 1. c. p. 227), has now been established. 



6. Nanina cochlostyloidês^ n. sp. 



Shell slightly umbilicated, globosely conical, obtuse at 

 the apex, thin, whorls 5^/3, the upper ones rather flat, 

 the penultimate and ultimate inflated, rather smooth, 

 with faint spiral striae , upper whorls pale yellowish or 

 greenish , last whorl much dilated with a slight depression 

 near the suture, which is consequently superflcial at 

 the upper whorls and deep at the lower ones , the last 

 whorl is orange, yellow or green, dull, obliquely striated, 

 slightly descending near the aperture, with a rounded 

 angle near the suture and one towards the base, which 

 is rather flat and has near the umbilicus, a small shining 

 space ; aperture rounded-rhomboid , lip rather thin , slightly 

 thickened internally, columella obliquely descending, slightly 

 reflected , interior of the aperture bright orange , citron 

 yellow or white. 



Notes from tbe Ley den ]Museuin, Vol. XIV. 



