18, 1 Dickerson: A Fauna of the Vigo Group qT 
This fauna flourished in slightly deeper, or at least quieter, 
water as one specimen of the fragile Placuna placenta with 
both valves splendidly preserved shows that the specimen was 
not within strong wave action. The preservation of the other 
species is remarkably fine. The strata at this locality are nearly 
vertical, a good dip and strike being obtainable in the middle 
of the stream. 
The following species were obtained from locality 4x, Phil- 
ippine Islands, Luzon, Tayabas Province, Bondoc Peninsula, west 
side of Ragay Gulf, Bahay River; 320 meters east of the mouth 
of Apad Creek in road cut 60 feet above the river in yellow 
sandstone, about 50 feet stratigraphically above the brackish 
water fauna in the lignitic strata of locality 5. Colls., Roy E. 
Dickerson and Mark Fuken. 
Species from locality 4x. 
Architectonica pictum (Philippi) ; Nassa_ costellifera A. Adams; 
living. living. 
Cerithidea cf. ornata Hinds; Nassa_ crenulata » (Bruguiere) ; 
living. living. 
Cerithium bandongensis se Natica spadicea Reeve; living. 
Martin. Phos roseatus Hinds; living. 
Columbella bandongensis  K. Ranella tuberculata Broderip; 
Martin. living. 
Conus ornatissimus K. Martin. Ricinula spectrum Reeve; living. 
Cypraea sp. ‘ Rostellaria fusus Linnzeus; living. 
Delphinula? Rostellaria _crispata Kiener; 
Delphinula reeviana Hinds. 
Eburna ambulacrum Sowerby; 
living. : 
Marginelia. 
Melania asperata Linneus. 
Mitra bucciniformis K. Martin, 
Mitra junghuhni K. Martin. 
Mitra javana K. Martin. 
living. 
Strombus sp. a. 
Terebra javana K. Martin. 
Terebra bicincta K. Martin. 
Trochus sp. 
Turris marmorata (Lamarck); 
living. 
Turris (Surcula) flavidula La- 
marck; living. 
PELECYPODA 
Arca ferruginea Reeve; living. 
Corbula socialis K. Martin. 
Chione chlorotica Philippi; living. 
Glycimeris viteus (Lamarck); 
living. 
Pecten cf. pseudolima Sowerby; 
living. 
Pecten cf. cristularis Adams and 
Reeve; living. 
Pecten cf. radula Linnzus; living. 
Pecten (Pleuronectia) pleuronecta 
Linneus; living. 
Placuna placenta Linnzus; living. 
Solecurtus quoyi Deshayes; living. 
Spondylus sp. 
