'22 ^ POSTTERTIARY FAUNA FROM DEPOSITS OF BLITONO. 



Ad 30. Both specimens have only 9 — 11 ribs; the re- 

 cent ones generally have 12. This reduced number, con- 

 stituting a variety, which is often recorded for other spe- 

 cies as well , is no objection to their identification with 

 P. radula Lam. 



Ad 38. All the specimens belong to the variety ,,de- 

 pressa' (Conf. Roemer. Monographic der MoUuskengat- 

 tung Venus). 



Ad 48. The identification remains doubtful, as the right 

 valve , which alone is available , is relatively a little less 

 high than the valves of Solen corneus Lam., which I had 

 occasion to compare. 



Ad 50. Only a part of the tube is present and was se- 

 parated from A. javanum Jjam. because of the strongly 

 marked annulation. 



Ad 59. A series of specimens of this species entirely 

 corresponds with recent specimens from Blitong now in the 

 Leyden Museum. One specimen measures 70 mm. in length, 

 3G mm. in height and has moreover a very concave un- 

 dersurface. This is an extreme of variation , towards which 

 the Fungia glans figured by Dana (Zooph. p. 290 tab. 

 18 fig. 2) forms the transition. H. Milne Edwards has al- 

 ready noticed, that Fungia glans Dana would eventually 

 prove to be synonymous with Cyeloseris cyclolites E. H. 

 (Corall. Ill p. 50). 



Ad 60. As far as could be made out from Dana's fi- 

 gure and description, certain recent specimens from the 

 Indian archipelago, contained in the collections of the 

 Leyden Museum, belong to Favonia crassa Dana. With 

 these recent specimens the one from the stream-tin-de- 

 posits could be identified with certainty, and so at all 

 events the species of Blitong is one, which still occurs in 

 the Indian ocean. 



iN'otes Irom the Leyden Museum, Vol. III. 



