130 GEOLOGICAL RECONNAISSANCE OF THE DOMINICAN REPUBLIC. 



Sinum gatunense (Toula). 



Turbo dominicensis Gabb subsp. laloi Maury. 



Calliostoma grabaui Maury. 

 Scaphopoda: 



Dentalium dissimile Guppy subsp. ponderosum Gabb. 



Cadulus denticulus-tigris Maury. 

 Pelecypoda: 



Area (Scapharca) inaequilateralis Guppy. 



Venericardia scabrieostata Guppy. 



Protocardia gurabica Maury. 



Pitaria (Lamelliconcha) acuticostata Gabb. 



Tellina waylandvaughani Maury. 



Gurabo Formation. 

 List of stations. 

 (For maps of Rio Mao and Rio Gurabo see Plates IX and XL) 

 Province of Santiago, Potrero, Rio Amina. C. J. Maury, collector. May 22, 1916. 

 Province of Santiago, Ric Mao, Bluff 1, a mile above Cercado. C. J. Maury, collector. 

 May 1919. 



Province of Monte Cristi, Rio Gurabo, zone A at Los Quemados. C. J. Maury, 

 collector. May 1916. 



Province cf Monte Cristi, Rio Gurabo, zones B, D, E, and F, above Los Quemados. 

 C. J. Maury, collector. May 1916. 



7791. Province of Monte Cristi, Los Quemados, limestone. C. J. Maury, collector. 

 May 1916. 



8714 (D. C. 44). Province of Santiago, Rio Yaque del Norte, about 3.5 kilometers 

 S. 25° W. of wireless tower at Santiago. D. D. Condit, collector. April 24, 1919. 



8715 (D. C. 45). Province of Santiago, Rio Yaque del Norte, station 5 cf traverse 

 above Santiago, above Las Charcas. D. D. Condit, collector. April 24, 1919. 



8726 (D. C. 52). Province of Santiago, La Canela, south side of Rio Yaque del 

 Norte, 15 kilometers west of Santiago. T. W. Vaughan and C. W. Cooke, collectors. 

 May 1, 1919. 



8727 (D. C. 53). Province of Santiago, 13 kilometers from Potrero on trail to San 

 Jose de Las Matas. D. D. Condit, collector. May 2, 1919. 



8728 (D. C. 54). Province of Santiago, about 14 kilometers from Potrero on trail to 

 San Jose de los Matas. D. D. Condit, collector. May 2, 1919. 



8516 (C-22). Province of Santiago, bluff on right bank Rio Amina at ford near 

 Potrero. T. W. Vaughan and C. W. Cooke, collectors. May 2, 1919. 



8517 (C 8517 (C-23). Province of Santiago, left bank of Rio Amina about 0.5 kilo- 

 meter upstream from crossing at Potrero. T. W. Vaughan and C. W. Cooke, collectors. 

 May 2, 1919. 



8518 (C-24). Province of Santiago, left bank Rio Amina about 0.8 kilometer above 

 crossing at Potrero; next horizon below 8516 (C-22). T. W. Vaughan and C. W. Cooke, 

 collectors. May 2, 1919. 



8523 (C-29). Province of Santiago, bluff on right bank of Rio Mao about 1.7 kilo- 

 meters above Cercado de Mao, 33 meters above water level. C. W. Cooke, collector. 

 May 4, 1919. 



8519 (C-25). Province of Santiago, left bank of Rio Mao about 0.8 kilometer above 

 the ford at Cercado de Mao; specimens mostly from lower part of bluff. T. W. Vaughan 

 and C. W. Cooke, collectors. May 3, 1919. 



