STRATIGRAPHIC PALEONTOLOGY. 151 



Mollusca — Continued : 



Pelecypoda — Continued : 

 Chama sp. 



Myrtaea lomasdesamba Maury. 

 Phacoides (Parvilucina) yaquensis Gabb. 

 Cardium (Trachycardium) linguatigris Maury. 

 Cardium (Trigoniocardia) haitense Sowerby 

 Cardium (Laevicardium) sp. indt. 

 Antigona (Ventricola) blandiana (Guppy). 

 Chione sp. indt. 

 Chione (Lirophora) sp. indt. 

 Corbula cercadica Maury. 

 Corbula (Aloidis) vieta Guppy. 

 Gastrochaena sp. 



According to Dr. Maury's faunal lists the following species of Mollusca 

 which were not collected by the 1919 expedition, were collected by the 

 Maury expedition on the Rio Cana below Caimito, from a horizon in or 

 above the Gurabo formation. 

 Gastropoda : 



Bursa crassa Dillwyn. 

 Polynices stanislas-meunieri Maury. 

 Pelecypoda : 



Area (Scapharca) margaratae Maury. 

 Area (Scapharca) guayubinica Maury. 

 Area (Scapharca) patricia Sowerby. 

 Area (Scapharca) chiriquensis Gabb. 

 Placunanoinia lithobleta Dall. 



Mao Adentro Limestone. 



List of stations. 



8716 (D. C. 46). Province of Santiago, 6 kilometers southeast of Santiago fort, on 

 road to Baitoa. D. D. Condit, collector. April 24, 1919. 



8717 (D. C. 46 A). Province of Santiago, hills on Baitoa road, 4.3 kilometers south- 

 east of Santiago fort. D. D. Condit, collector. Apiil 24, 1919. 



8723 (D. C. 50 A). Province of Santiago, Gurabo Hills, about 3.4 kilometers north- 

 east of Santiago. 0.4 kilometer northeast of station 8722 (D. C. 50). T. W. Vaughan 

 and D. D. Condit, collectors. April 28, 1919. 



8724 (D. C. 50). Province of Santiago, Gurabo Hills, about 3.4 kilometers northeast 

 of Santiago, near rock-crushing site for road metal. T. W. Vaughan and D. D. Condit, 

 collectors. April 28, 1919. 



8663 (D. C. 43, 49). Province of Santiago, Arroyo las Lavas, crossing of road from 

 Santiago to Monte Cristi. T. W. Vaughan and C. W. Cooke, collectors. April 23, 29, 1919. 



8531 (C-37). Province of Santiago, right bank of Rio Mao, about 4.3 kilometers 

 above mouth of irrigation ditch at Valverde (Mao), first bluff on right bank above 

 Valverde. C. W. Cooke and D. D. Condit, collectors, May 7, 1919. 



8532 (C-38). Province of Santiago, bluff on right bank of Rio Mao, opposite Mao 

 Adentro, from the coralliferous beds 4 to 24 meters above the bottom of the exposure. 

 T. W. Vaughan, collector. May 7, 1919. 



8533 (C-39). Province of Santiago, bluff on right side of Rio Mao, opposite Mao 

 Adentro, from lower part of the exposure. T. W. Vaughan, collector. May 7, 1919. 



8731 (D. C. 61). Province of Santiago, Cercado de Mao, top of hogback, 2.5 kilo- 

 meters southwest of village, altitude 330 meters above sea level. D. D. Condit, 

 collector. May 6, 1919. 



