viii, a, 4 Smith: Fossil Invertebrate Fauna 251 



5. Moncao Bay, Batan Island; just north of this bed is a considerable 



series of limestones and shales. 



6. Bilbao, Batan Island; thin grayish shale overlying lignite seams. 



7. Batan, Batan Island; gray shale overlying the East Batan coal 



seam; contains Vicarya callosa, etc. and numerous species of 

 Corbula. 



8. Gaba Bay, Batan Island; grayish marl something like No. 4. 



9. Agundi, Batan Island; coast limestone. 



10. Caracaran River, Batan Island; thin-bedded shales, alternating 



with limestone beds. These probably belong to the Miocene and 

 overlie the principal coal beds. 



11. Nagtagan Island near Batan; limestone which is the same formation 



as that which occurs on the west end of Batan Island. 



12. San Ramon Point, Batan Island; shale. 



13. White to cream-colored upper limestone near Dapdap, Batan Island. 



20. Loboo River, Batangas Province, where the trail crosses to the Loboo 



Mountains. This is a dark grayish coarse indurated shale with 

 bowlders in it. It is very hard and difficult to pick. This prob- 

 ably belongs to the Miocene. In 1905 I visited this locality and 

 was of the opinion that this shale immediately overlay the basal 

 conglomerate from the bowlders which occurred in it. Subsequent 

 experience in the Philippines necessitates a modification of my 

 former conclusion. This formation may not be very near the 

 basal conglomerate. In fact, the whole lower Miocene and Eocene 

 may be deeply buried at this point. Therefore, the statement, 

 made at that time, that coal would probably not be found under- 

 lying this shale, ought to be omitted. 



21. From a cream-colored limestone overlying the above formation in 



the same locality as No. 20. 



22. Limestone at Point Ilihan on the Batangas coast; not visited by 



me; probably Pliocene. Collected by C. M. Weber. 



23. Point Buri, Batangas coast; limestone. Collected by C. M. Weber. 



24. Ilaga Creek, Batangas; Miocene limestone like No. 21. 



41. Baguio, Benguet, 1 kilometer west of the city hall. This is a 



reddish sandstone, very friable, which is very rich in fossil clam 

 shells. The peculiar heterogeneous composition and reddish color 

 of this sandstone is due to the fact that it is made up of detritus 

 from volcanic rocks upon which it rests. It is more in the nature 

 of an arkose. This is probably Miocene. 



42. Benguet Road, Mountain Province, Luzon, on the zigzag just below 



McElroy's old camp. This is a coal-black limestone containing 

 numerous bivalves. The black color is due probably to impurities 

 at the time of formation of this deposit. 



43. Trinidad Water Gap at the southern entrance to Trinidad Valley. 



There is a basal conglomerate which outcrops just below the 

 limestone on the trail just at the entrance to the gap. It is rich 

 in the same kinds of fossils as are found at locality 41. 



44. Trinidad Water Gap, across the stream on the northeast side of the 



river. This is a coral reef which contains numerous coral frag- 

 ments of species still living in the China Sea. It is now about 

 1,500 meters above sea level. 



