The specimens are smaller than those described by Sykes, who calls the colour pale 

 lilac; this is scarcely applicable to the Siboga-specimens, but the strongly projected inner lip 

 which is so characteristic for this species is distinctly present in one specimen, where its length 

 reaches nearly 2^3 Mill., in the other one, which is probably younger, this projection is still 

 very slight, but in nearly every other respect it agrees with the more typical one, so I don't 

 hesitate to unite them. 



Cyclotus Guilding. 



1. Cyclohis kangeamis (v. Mlldff.) n. sp. PI. XII, fig. 10. 



Stat. 16. Kangeang. 3 Spec. 



Shell depressedly turbinate, openly umbilicated, rather smooth, but with conspicuous 

 growth-striae on the upper whorls, fading on the last one, which is irregularly pitted, moreover 

 a large part of the shell, if fresh, is covered by very fine spiral striae and an irregular, impressed 

 line, which is at some places double, runs at some distance from the deep suture; whorls 

 about 4Y3, slightly depressed above, especially near the suture, else convexly rounded : colour 

 from yellowish- to dark redbrown, more or less variegated with darker zigzag- markings and a 

 yellowish band at the periphery, often accompanied by a darker zone below. Aperture nearly 

 circular, a little oblique, with a slight angle above, margin white, double, the outer margin 

 rather strongly expanded and slightly reflected, forming a triangular lobe at the body- whorl; 

 this triangle is slightly compressed, with an impressed line on the inner surface. Operculum 

 thick, calcareous, many-whorled. 



Diam. 19, alt. 12; apert. alt. et lat. incl. perist. 9 Mill. 



Diam. ig^j^^ alt. i^''l^\ apert. alt. et lat. incl. perist. g^j^ Mill. 



This species is nearly allied to C. floresianus v. Mart. (Zool. Ergebn. Reise in Niederl. 

 Ost-Indien, p. 211, PL 12, fig. i — 3), but it is smaller, has a darker colour, the umbilicus is 

 narrower and the peristome is much more expanded and even reflected. It has been named by 

 V. Mollendorff, but as far as I know, he has never described it. I possess specimens received 

 from Fruhstorfer in 1903, of these one is of much lighter colour. The largest Siboga-specimen 

 is a dead shell, the two other ones have been taken alive. / 



2. Cyclotus succinctus v. Martens. 



v. Martens. Monatsber. Acad. Berlin, 1864, p. 117. 

 Ostasiatische Landschn. p. 122, PI. 2, fig. 6. 



Stat. 296. Dry Riverbed near Noimini, Timor, i Spec. 



The only specimen of this land-mollusk is a dead shell, it agrees with var. major of 

 V. Martens by its size and feeble keel. 



90 



