22 



Bui^IvKTlN 37 



23 



center ; umbones small, dentition as in the genus with short and 

 strong teeth. Length 6 mm. ; height 3^ mm. 



Locality. — Both Gregg's and Bell's Landing beds, Ala. 

 River, Ala. 



Type. — Ala. Museum of Nat. History, University, Ala. 



Remarks. — This species has a strong resemblance to Ervilia 

 polita Dall from the Floridian Pliocene. The young seem to be 

 higher in proportion to their length than the full grown speci- 

 mens. 



Panopea bellsensis, n. sp, PI. 3. Figs. 10, ir. 



Shell rather large, thin, with a brown epidermis ; lines of 

 growth irregularly spaced ; shell compressed, nearly equilateral ; 

 beaks small, appressed to and partly covered by the reflected dor- 

 sal margin ; one large cardinal tooth ; ligamental attachment 

 short ; interior porcellaneous with growth lines showing through; 

 pedal scars small. Length 30 mm. ; height about 13 mm. 



Locality. — Bell's Ldg., Ala. River, Ala. 



Type. — Ala. Museum of Natural History. 



Remarks. — One valve and some fragments in the collection. 

 This species has its epidermis preserved. The shell is extremely 

 thin and delicate. 



Donax acutangula, n. sp. PI. 3. Fig. 12. 



Shell nearly equilateral ; pointed at both ends, the umbonal 

 slope bent abruptly to almost a right angle in old specimens ; 

 surface nearly smooth ; fine growth lines showing ; ventral 

 margin entire ; beaks small, pointed, smooth ; hinge well devel- 

 oped ; laterals very long, striated on the inner edges. Length 

 about 31 mm. ; height 15 mm. 



Locality. — Bell's Landing, Ala. River, Ala. 



Type. — Ala. Museum of Nat. History, University Ala. 



Remarks. — One whole valve and several fragments of both 

 valves received. 



Area (Cucullaria) ozarkensis, n. sp. PI. 3. Figs. 13, 14. 



Shell small, rounded at both ends, giving the shell a quad- 



