268 The Philippine Journal of Science wis 



has a deep broad groove, which leaves behind a sutural band 

 on the whorls. 



Vicarya callosa Jenk. var. semperi Smith. Plate VI, figs. 4, 6, 7, 

 and 8. 



Quart. Journ. Geol. Soc. (1864), 20, PI. VII, fig. 5; Tertiarscht. auf 

 Java (1880), PI. XI, fig. 3; Phil. Journ. Sci. (1906), 1, 628, PI. Ill, 

 fig. 1. 



Fig. 4 is a drawing of a rather imperfect specimen, but which 

 shows enough sculpturing to enable us easily to identify it. 

 This specimen is from Batangas Province, Luzon, and is 

 somewhat larger than those figured by Martin from Semper's 

 collection (from Minanga and Dicamui Brook in northern 

 Luzon), but is about the size of a specimen which I saw at the 

 Imperial University of Tokyo. It is also about the same size 

 as the one figured by Martin from Java. 



This species is moderately common in the Philippine coal 

 measure shales, being especially plentiful in the shale above 

 the principal coal seam on the eastern end of Batan Island, 

 Albay Province. It is also found in the same position in the 

 coal measures in Cebu and Mindanao. It is a good "indicator" 

 or zone fossil. 



The characteristic features of all these specimens are the 

 flattened whorls, the row of strong spines which is found next 

 to the sutures, and the sigmoidal growth lines which have their 

 deepest incurving between the rows of spines. 



This is the most important and one of the most striking 

 fossils to be found in the whole geological section in this part of 

 the world. 



It occurs in Japan, the Philippines, and Java, and there is 

 a closely related form in India, V. verneuili D'Arch. 



Locality : Loboo River, Batangas Province, Luzon ; Cebu, Batan 

 Island, and Mindanao. 



Formation: Miocene (Gaj formation of India), shaly sand- 

 stone in Batangas, and in coal measure shale in the last-named 

 localities. 



CERITHIUM Adanson 



Shell turreted, without epidermis; mouth oval, elongated 

 anteriorly, with well-developed canal, with generally a short 

 furrow posteriorly; operculum oval or semicircular with little 



