GIRTY, NEW CARBONIFEROUS FOSSILS 227 



Paleoneilo sera sp. nov. 



Shell small, attaining a width of 12 mm., transverse, subovate. Greatest 

 width about 1.5 times the height. Beak about one third the width back from 

 the anterior extremity. Lower margin strongly convex, straighter toward the 

 posterior (longer) end. Cardinal line nearly straight, strongly converging 

 with the lower border. Posterior extremity narrow and abruptly rounded. 

 Anterior extremity broadly and regularly curved. Convexity rather high; 

 umbo small and strongly incurved. 



The surface is marked by regular and closely arranged concentric lines. 



Cypricardinia fayettevillensis sp. nov. 



Shell small, attaining a width of 10 mm., which is about twice the greatest 

 height. Shape subrhomboidal. Cardinal line straight, about one half the 

 entire width. Ventral border straight in the middle, rounding upward at the 

 ends, more rapidly at the anterior end. Posterior extremity obliquely trun- 

 cated with a broad, rounded posterior inferior angle and a distinct posterior 

 superior angle of about 150°. Anterior extremity strongly and regularly 

 rounded under the nearly terminal umbo which is large and strongly incurved. 

 Convexity high. Umbonal ridge rounded, undefined. A distinct constriction 

 passes a(?ross the shell, meeting the ventral margin a little in front of the 

 middle. 



Surface marked by a few (about 9) strong, regularly arranged striae which 

 give the shell a lamellose appearance. No trace of radial sculpture has been 

 observed. 



Conocardium peculiare sp. nov. 



Shell small, highly convex, triangular. Length along the umbonal ridge 

 distinctly less than the width along the hinge. Umbonal ridge broad, well 

 defined on both sides, prominent, moderately oblique. Beaks subcentral, 

 nearer the anterior end. L^mbonal ridge sharply defined from and elevated 

 above the posterior portion. On the anterior side, the shell is strongly com- 

 pressed. 



The sculpture is different on the three portions of the shell thus defined. 

 On the anterior side, the lirre are rounded, separated by angular strife and 

 rapidly decreasing in size toward the extremity. They do not conform to 

 those of the umbonal ridge which is defined by an unusually large rib on the 

 anterior side, but run obliquely, so that new ones are introduced at intervals 

 toward the ventral margin. On the umbonal ridge itself, the costfe are rather 

 smaller than on the anterior portion and separated by broad, flat intervals, 

 about twice the width of the costfe. Two or three of the latter are crowded 

 together near the anterior boundary of the ridge. The costse on the posterior 

 portion are broader than those on the anterior, flat-topped and separated by 

 narrow, rather flat strife. The whole surface is crossed by fine, equally 

 spaced, lamellose. concentric lines. 



Caneyella? peculiaris sp. nov. 



Shell small, the largest specimen referred here having a length of 15 mm., 

 eqnivalve. oblique, the axis slni)ing slightly backward. Hinge line nearly as 



