l6o SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I48 



beak ; costae strong, simple, crests obtusely pointed, beginning at beaks, 

 numbering about 6 on fold, one fewer in sulcus, 10-12 on each flank ; 

 valves geniculate at anterior to form flattened or gently arcuate ante- 

 rior surface : bent sharply on crest of fold and lateral flanks of pedicle 

 valve, more gently through sulcus and on lateral flanks of brachial 

 valve. 



Pedicle valve flatly convex transversely and laterally toward flanks ; 

 more strongly convex through sulcus; beak short, thick, sides nearly 

 perpendicular, coming to right-angle point, apex curved slightly : full 

 extent not observed, probably suberect ; delthyrium broadly triangular, 

 nearly filled by brachial beak, sides constricted slightly by small del- 

 tidial plates ; foramen not observed, probably small but open. 



Brachial valve more strongly convex, beak blunt, apex within pedi- 

 cle valve. 



Pedicle valve interior with large boat-shaped spondylium formed 

 by convergence of dental plates, supported by low median septum ; no 

 lateral buttress plates observed. 



Brachial valve interior with camarophorium ; other internal features 

 not observed. 



Comparisons. — 5". cf. 5\ plicata is characterized by its strong, obtuse- 

 crested, numerous costae, high fold at the anterior, and its outline with 

 the greatest width anterior to the midlength. It differs from 5. kutorgae 

 (Tschernyschev) in its somewhat larger size, more trigonal rather 

 than elliptical outline with the greatest width farther anterior, higher 

 fold, and more numerous costae on fold and flanks. The Oregon speci- 

 mens resemble Tschernyschev's (1902) specimen illustrated on plate 

 50 more than the two on his plate 22. However, the only complete 

 Oregon specimen is slightly crushed at the anterior, so detailed com- 

 parison is impossible. I agree with Cooper (1957) that this species 

 most nearly resembles 5. plicata, but may not be conspecific. 



Discussion. — These specimens are described and illustrated as ex- 

 amples of the genus Septacamera. They appear to retain all characters 

 of the genus except for the controversial lateral buttress plates of the 

 pedicle valve. 



SPECIES DOUBTFULLY 

 STENOSCISMATACEAN 



CAMAROPHORIA SUTSCHUANENSIS Loczy (fide Grabau, 1931b) 



Camarophoria sutschuanensis Loczy GRABAU, A. W., 1931b, Pal. Sinica, vol. 3, 

 fasc. 3, p. 83, text figs. 6, 7, pi. 9 ; figs. 1-3. 



Discussion. — Grabau (1931b) cited this species in his collection 

 from the Devonian of China, quoting Loczy 's (1899) description in 



