Report of U. S. National Museum, 1897.— Flint. 



Plate 19. 



Fig. 1. HAPLOPHRAGMIUM CALCAREUM Brady. See Page 275. 



a. Longitudinal Section. 



Fig. 2. HAPLOPHRAGMIUM AGGLUTINANS Brady. See page 275. 



Fig. 3. HAPLOPHRAGMIUM TENUIMARGO Brady. See page 275. 



Fig. 4. HAPLOPHRAGMIUM CASSIS Parker. See page 275. 



Fig. 5. HAPLOPHRAGMIUM EMACIATUM Brady. See page 276. 



Fig. 6. HAPLOPHRAGMIUM FOLIACEUM Brady. See Page 276. 



