DEPOSITS OF BLITONG. 



2i 



wliorl , shows rather strong varices. These varices , which 

 have not been observed in Str. canarium L. might be 

 regarded as abnormal, were it not for a similar varix, which , 

 though rather inconspicuous , is nevertheless present on the 

 uninjured part of the bodywhorl. For this reason the 

 determination oi Str. canarium L. remains somewhat doubtful. 



Ad 8. Both the extremes of variation of this species, 

 macro- and micro-phyllus , are represented in the collec- 

 tion of Blitong, strictly agreeing with similar specimens 

 from the Indian ocean. 



Ad 22. When I etablished this species (Die Tertiar- 

 schichten auf Java. Palaeontolog. Theil p. 66), I was not 

 able to compare its internal structure with that of C. te- 

 lescopium Brug. The specimen from Blitong , which is 

 open on one side , shows a columella with a strong , 

 flat, bandlike fold, provided with a very distinct longitu- 

 dinal furrow; in C. telescopium Brug. the fold is more 

 sharp-edged than flat and the furrow very inconspicuous. 

 This afl'ords a new proof for the specific distinctness of 

 C. montis Selae Mart, even if one might be inclined to 

 regard the specimens designated by this name as identical 

 with such of C. telescopium Brug, of which the ridges 

 had been worn out. The good state of preservation of 

 the Javanese specimen affords another argument against 

 this view. 



The strong prominent fold however, which may be ob- 

 served internally on the anterior surface (when the animal 

 is placed in its normal position^ of the whorls, is no 

 characteristic difference , as it is present in both species. Mo- 

 reover it is not visible in complete specimens, being ab- 

 sent in the latter half of the bodywhorl. 



Ad 26. Amongst the Blitong specimens I also find the 

 variety, which is distinguished by having a smooth band 

 on the middle part of the shell, a variety, which was al- 

 ready mentioned by Lamarck (Hist. nat. des anim. sans 

 vert. VII p. 670) and which is also found in the collec- 

 tions of the Ley den Museum. 



!N'otes from tbie Leyden ^luseum, "Vol. III. 



