260 The Philippine Journal of Science ms 



all the transverse ribs in the former are smooth while in the 

 latter they are slightly notched. This difference probably is due 

 to wear. 



Locality: San Rafael, Agusan River, Mindanao, No. 1054. 



Formation : Recent or Pleistocene shales. 



PLEUROTOMIDJE 



TURFJS Humph. 



Spindle-shaped, long, the last whorl making up about one-half 

 of the whole length of shell ; canal elongated, generally straight ; 

 inner lip smooth. The sinus in the outer lip somewhat removed 

 from the suture and located in a prominent roll. From the 

 Cretaceous to present. (Zittel.) 



Fossil species of Tunis in the Philippines. 



Pleurotoma g ending anensis K. Mart. Pleurotoma coronifera K. Mart. 



Foss. v. Java, p. 32. Foss. v. Java, p. 38. 



Pleurotoma carinata Gray. Pleurotoma neglecta K. Mart. 



Foss. v. Java, p. 37. Foss. v. Java, p. 42. 



Tunis (Pleurotoma) andaensis sp. no v. Plate III, fig. 5. 



A species which is superficially like the one figured here is 

 P. cataphracta Brosc. (Foss. Wiener Beckens, PI. 36, figs. 5 

 to 9.) However, on the prominent ridge or varix which follows 

 the whorls there are 2 small tubercles instead of 1 on cata- 

 phracta and in general tubercles are more abundant on the 

 former than on the latter. Height, 50 millimeters; width, 20 

 millimeters. 



Locality; Anda Island, Pagasinan Province, Luzon, No. 757. 



Formation: Miocene or Pliocene marl. 



Turris (Pleurotoma) carinata Gray var. woodwardi. Plate V, fig. 4. 

 K. Martin, Foss. v. Java, PI. VI, figs. 91-96. 



This is almost identical with Javan specimens. As there is 

 more or less difference between the young and the adult of 

 some species, the minute difference in sharpness of ridges, height 

 of whorls, etc. may be neglected. 



Locality: Cut in road between Pasuquin and Laoag, Ilocos 

 Norte, Luzon. 



Formation : Recent sandy marl. 



Turris (Pleurotoma) flavidula Lam. var. sonde K. Mart. Plate III, 

 fig. 7. 



K. Martin, Foss. v. Java, 1, n. s., PI. VI, figs. 102-104. 



