230 Bulletin 29 394 



cate concentric striae most apparent on the low umbonal ridge, 

 anterior to the ridge is a broad sulcus corresponding to that of 

 the right valve ; pallial sinus deep, widest near its central por- 

 tion, narrower anteriorly, confluent with the pallial line for a 

 considerable distance ; cardinal teeth two, the anterior heavy, 

 strongly bifid. Length of right valve 49, altitude 25, diameter 6 ; 

 corresponding measurements of a left valve are 55 X 26 X 4 mm. 



A beautiful and striking shell, immediately recognized by 

 its rostrate and discrepant valves. It is named in honor of Dr. 

 A. Smith Woodward of the British Museum. 



Localities. — (Exp'd '16) Bluff 3, Cercado de Mao; Zones 

 H and I, Rio Cana at Caimito. 



Genus Solbn Linne 



Solen (Splena) obliquus Spengler 



Solen obliquus Spengler, 1794. Not of Sowerby 1844. 



We collected a fragment of a Solen which exactly matches 

 specimens of the recent 5. obliquus collected on the Monte Cristi 

 beach. Our fossil shows the distal half of a large shell. Un- 

 fortunately the hinge characters are not known, but judging from 

 what we have, the fossil and recent shells are identical. The genus 

 has not heretofore been found in the blue clays of Santo Do- 

 mingo. 



Locality. — (Kxp'd' 16) Zone I, Rio Cana at Caimito. 



Genus Siliqua Megerle von Miihlfeldt 

 Siliqua subcequalis Gabb 



Plate 39, Figure 12 



Siljjgua subcequalis Gabb, Trans. Amer. Phil. Soc, vol. 15, p. 247, 



1873. 

 Siliqua subcequalis Dall. Trans. Wagner Inst. Sci., vol. 3, pt. 5, p. 956 



1900. 



A delicate, translucent shell characterized by its nearly cen- 

 tral beaks. Exterior marked only by concentric lines ; polished ; 



