NO. 2 BRACHIOPOD SUPERFAMILY STENOSCISMATACEA GRANT 97 



Clarke) from the Middle Devonian of Indiana. This species retains 

 some of the characters of Atribonium; some individuals have the valves 

 meeting in a gentle curve at the anterior, recalling the flattened ante- 

 rior of Atribonium, and the camarophorium is unusually flat longi- 

 tudinally for Coledium. The last known representatives are C. crassum 

 (Hamlet) from the Permian of Timor and C. globulinum (Phillips) 

 from the Permian of England. 



Species assigned to Coledium. — 

 Coledium angarium n. sp. 

 Coledium erugatum n. sp. 

 Coledium torvum n. sp. 

 Camarophoria obesa Clark 1917 

 Stenoscima bozvsheri Cooper 1956 

 Camarophoria cestriensis Snider 1915 

 Rhynchonella explatiata McChesney 1860 

 Coledium dutroi n. sp. 

 Coledium evexum n. sp. 

 Coledium opimum n. sp. 

 Coledium undulatum n. sp. 



Camarophoria rhomboidalis Hall and Clarke 1894 (part) 

 Camarophoria crassa Hamlet 1928 

 Terebratula globulina Phillips 1834 

 Terebratula rhomboidea Phillips 1836 

 Rhynchonella thera Walcott 1884 

 Stenoscisma saquensis Muir-Wood 1948 



"Terebratula pleurodon Phillips" (Tournai, Belg. in USNM coll.) 

 Camarophoria indentata de Koninck 1887 



Species probably belonging to Coledium. — Grabau (1931a, p. 87) 

 established four species that he called the "Group of Camarophoria 

 tingi" ; namely C. bitingi, C. tritingi, C. quadritingi, and C. pentatingi. 

 In doing so, he neglected to establish the species C. "tingi." Distinc- 

 tions among these four species are entirely upon the basis of number of 

 costae in the sulcus, which ranges from two to five. In defense of this 

 subdivision Grabau states, "It might be supposed that these were in- 

 dividual variations of a single specific group, one merging into the 

 other, but this fact cannot be substantiated, for in none of our well- 

 preserved specimens is there any indication of such mergence. If, for 

 example, the triplicate group were derived from the biplicate, we 

 should now and then find the latter with an incipient third plication, 

 and we should also expect to find that the triplicate group shows a 

 biplicate character in the younger stage. The same relationship should 

 hold between the triplicate and the quadriplicate, or between this and 

 the biplicate form." Then he describes one specimen with a bifurcated 

 costa, whose significance he discounts, continuing, "So far as the speci- 

 mens permit us to judge, the plicae appear simultaneously, which 



