Bulletin 22 



and in the umbonal region show a series of riblets at right 

 angles following the growth lines. Inner basal margin dentic- 

 ulated. The substance of the shell is thin, showing the ribs 

 in the cavity. The hinge was unfortunately broken. 

 Height 35 ; breadth 33 mm. 



De Soto, Miss. Claibornian. 



Tellina (Angelus) prole?ita, n. sp. 



Plate I, fig. 5 



Shell small, rather compressed, inequilateral, posterior 

 longest, the dorsal margin descending sharply on the anterior 

 end, shell rather pointed, while the posterior is rounded ; hinge 

 normal ; exterior smooth, with a few faint lines of growth ; a 

 strong depressed area anteriorly running from beak to base. 

 Internally a slight rise drops from the beak to the ventral 

 margin ; muscular scars just perceptible. 



Length 5 ; height 2 mm. 



Claiborne Sand bed, Claiborne, Ala. 



The anterior depression is the most noteworthy and dis- 

 tinctive peculiarity. 



Tellina temperata, n. sp. 



Plate I, fig. 6 



Shell small, oval, moderately convex, inequilateral, reg- 

 ularly rounded, beaks very small, surface polished and mark- 

 ed with concentric lines separating rather broad interspaces. 

 Hinge normal ; right laterals rather strong. Muscular scars 

 distinct but shallow ; pallial sinus partially confluent. 



Length 1 1 ; height 6 mm. 



Gregg's Landing, Alabama River, Ala. 



This species resembles T. subtriangularis , nob., somewhat 

 but is more regularly rounded, lacks the posterior fold and 

 the raised lines thereon. 



