258 The Philippine Journal of Science wn 



locality which resemble very strongly F. nodulosus in the Indian 

 Tertiary. 

 " Locality : Slopes of Mount Mangilao, near Davao, Cebu. 



Formation: Pliocene limestone, No. 272. 



Elevation: 200 meters. 



TRITONIDEA Swainson 



Shell oval, inflected; spire and aperture of about equal 

 length; surface usually spirally ribbed and transversely folded; 

 columella often with weak transverse folds; outer margin 

 thickened, crenate internally; aperture posterior with a short 

 canal. Tertiary and Recent. (Zittel.) 



Tritonidea (Pollia) ventriosa K. Mart. Plate IV, fig. 16. 



A specimen practically identical with this was figured and 

 described by Martin as Buccinum ventriosum. 21 Later he placed 

 it in Pollia. Dall has reverted to the earlier name for this 

 genus. 22 



Locality: San Rafael, Agusan River Valley, Mindanao, No. 

 1054. 



Formation: Recent shales. 



BUCCINIDJE 

 HINDSIA Adams 



Shell ovately fusiform ; spire acuminate ; whorls longitudinally 

 ribbed and cancellated; aperture ending anteriorly in a long 

 recurved canal; inner lip thin, circumscribed, transversely 

 corrugately plicated; outer lip grooved internally. (Zittel.) 



Hindsia dijki K. Mart. Plate IV, fig. 17. 



I have several specimens of H. dijki before me, which at first 

 sight might be confused with H. tambacana. They show slight 

 variations from H. dijki, but in my opinion they are not 

 specifically distinct. These were compared directly with Mar- 

 tin's specimens. 



Locality: Cut in road between Laoag and Bacarra, Ilocos 

 Norte, Luzon, and the west side of Aroroy Bay, Masbate. 



Formation: In (Ilocos Norte) recent sandy marl and (Mas- 

 bate) in gray sandy shale, probably Pliocene. 



21 Samml. d. geol. Reichs-mus. in Leiden, 1 , 204. 

 22 1 learned this in conversation with Doctor Dall. 



