264 The Philippine Journal of Science ibis 



DOLIIDiE 



PYRULA Lamarck 



This genus, established by Lamarck for pear-shaped sheila 

 with spires, is now broken up into a number of genera which 

 are distributed among the families of Fusidse, Purpuridse, and 

 Ficulidae. In the paleontologic literature the collective name of 

 Pyrula is generally retained. The genera belonging to the Fu- 

 sidae are: Melongena, Fulgur, and Tudicla. 



Melongena Schumacher 



Shell thick, pear shaped; spire short; whorls possessing tu- 

 bercles or short spines; mouth long and oval; canal short and 

 wide; columella smooth; outer lip plain. Tertiary and Recent. 

 (Zittel.) 



Pyrula (Melongena) sp. Plate XIV. 



This is a large imperfect cast which cannot be definitely placed. 

 Locality : Batan Island, southeastern coast of Luzon. 

 Formation: Miocene limestone. 



DOLIUM Lamarck 



Shell very thin, inflated; spire very short; body whorl very 

 large, longitudinally and spirally ribbed or cancellated ; aperture 

 wide, oval; canal short, obliquely directed; outer lip notched 

 internally. Cretaceous to Recent. (Zittel.) 



Dolium costatnm Menke. Plate V, figs. 5 and 8. 

 Tryon, Conchology, 7, PL IV, figs. 19-23. 



Philippine specimens are very similar in every respect to those 

 from Java, both groups of specimens being casts in a buff to 

 yellow marl. One Philippine specimen is very much larger than 

 the others and its ribs are farther apart, suggesting in general 

 aspect D. hochstetteri. 



In many cases the difference between Dolium and Cassis is not 

 marked, and it also seems that they are closely related genetically. 



The Javan specimens of D. costatum with nacreous outer layer 

 in some cases show a single fine rib between the larger ones. 

 This is true also in the case of some species of Cassis. This 

 secondary rib is not always to be seen. 



The matrix of both the Javan and Philippine specimens is very 

 much the same, usually a buff to yellow marl. 



Locality: Sibod Gulch, Naga, Cebu. 



Formation : Miocene marl. 



