BRACHIOPODA — TELOTREMATA. 



285 



equal (about y 2 inch). Pedicle valve with pointed and incurved 

 beak. Surface marked by 9-12 strong plications of which 2-3 

 occupy the sinus and 3-4 the fold. Differs from C. neglecia in 



Fig. 347. Camarotcechia acinus. A specimen in which the fold and sinus are not 

 developed. Enlarged, X 4- Clinton. (After Grabau. ) 



being larger and more robust with stronger and less angular pli- 

 cations. 



Niagaran of Kentucky, Indiana. 



249. C. whitei Hall. (Fig. 348, lower row.) Siluric. 



Somewhat quadrangular. Pedicle valve with beak abruptly at- 

 tenuate and pointed ; sides flattened. Surface marked with five to 



Fig. 348.^, (Upper row) Camarotcechia acinus, X4 : (middle row) Camarotcechia 

 india nensis £( lower row) Camarotcechia zvhitei. (After Hall.) 



six^plications on each side of median sinus and fold, with usually 

 but one plication in the sinus and two on the fold. Interspaces 

 wider'than plications. Concentric growth lines close. 

 Niagaran of Indiana. 



