*94 BuiXETIN 29 ^ 358 



Modiola corrugata Philippi, Abbild. und Beschr., vol. 2, p. 147, pi. 1, 



fig. 1, 1846. 

 Lithophagus corrugatus Gabb, Trans. Amer. Phil. Soc., vol. 15, p. 253. 



i8?3- 

 Lithophaga antillarum Dall, Trans. Wagner Inst. Sci, vol. 3, pt. 4, 

 p. 799, 1898; Bull. 90, U. S. Nat. Mus., p. 129, 1915, » 



Our specimens are imperfect but seem to be identical with 

 recent shells oiL. antillarum from Guadeloupe. Dall found this 

 species in the Tampa silex beds, Florida, and Gabb mentions its 

 occurrence at Cevico, Santo Domingo. 



Locality. — (Exp'd '16) Zone H, Rio Cana at Caimito. (Bor- 

 ing in coral). 



Lithophaga nigra d'Orbigny 



Lithodomus niger d'Orbigny, De la Sagra, Hist. Pol. p Nat. Isla de 

 Cuba, pt. 2, vol. 5, p. 351, 1845; Atlas, vol. 8, pi. 28, figs. 10, 11, 

 1855. (Spanish edition). 



Modiola caribcea Philippi, Abbild u. Beschr., vol. 3, p. 20, pi. 2, fig. 5, 



1847. 

 Lithophaga nigra Dall, Trans. Wagner Inst. Sci., vol. 3, pt. 4, p. 799, 

 1898; Bull. 90 U. S. Nat. Museum, p. 129, 1915. 



We had several perfect specimens but so extremely fragile 

 that they later fell to pieces. The hinge is toothless, and the 

 transverse striae terminate suddenly along an oblique line passing 

 from the umbo backwards just as in the recent species. The shell 

 has been found in the Tampa silex beds and is living now in the 

 Antilles. It is now reported for the first time from the blue 

 clays of Santo Domingo. 



Locality. — (Exp'd '16) Zone H, Rio Cana at Caimito (Bor- 

 ing in coral). 



Genus Crknbixa Brown 



Crenella divaricata d'Orbigny 

 Plate 26, Figure 18 



Nuculocardia divaricata d'Orbigny, De la Sagra, Hist. Pol. y Nat. Isla 



de Cuba, Atlas pi. 27, figs. 56-59, 1855. 

 Crenella divaricata Gabb, Trans. Amer. Phil. Soc, vol. 15, p. 252, 



1873. 



