PLATE LXII. 



Figures magnified 500 diameters. 



Figs. 1, (6). STEPHANOPYXIS CORONA, Grun.; V. H.,83 3 , f. 10, 11; Schm. At., 



123, f. 19 ; 130, f. 36. 



Fig. 2. SPINOSISSIMA, Grim.; Schm. At., 123, f. 18. 



" 3. TURRLS, var. crassipina, Gran.; Schm. At., 



130, f. 37, 11. Monterey. 

 4. STEPHANODISCUS LINEATUS, Ehrb. Mik., 33, 13, f. 22, = Cosci- 



nodiscus lineatus. 



" 5. STEPHANOPYXIS ACULEATA, Ehrb.; Schm. At., 130, f. 12. 



" 6. " CORONA, vide Fig. 1. 



" 7. PYXIDICULA (DictyopyxisJ, CRUCIAT.$, Ehrb. Mik., 18, f. 2ad. 



Ehrbs'. figure imperfect, = Pyx. Hellenica, 



var. 

 " s. (Stephanopyxis), LIMBATA, Ehrb. Mik., 18, f. 



7; Prit., p. 825. 

 " I*. (Stephanopyxis), CRISTATA, Ehrb.; E. Ber., 



1844, p. Nii, Mik., 18, f. 6. 



10. (l)ictyopyxis), LENS, E. Ber., 1S45, p. 86; Mik., 



18, 1. 5; Prit., p. 825. 



11. " CRUCIATA, Vide Fig. 7. 



Figs. 12-15. STEPHANOPXYIS APPENDICULATA, Ehrb. Mik., 18, f. 4; Schm. 



At., 130, f. 18, 19, 21, 23, 24. 

 Fig. 16. APICULATA, Ehrb. Mik., 19, f. 13, == Pyxi- 



dicula, apinilata. 

 " 17. PYXIDICULA COMPRESSA, Bail. M. O., p. 40, 2, f. 13, 14; Sm. 



Sp. T., Nos. 430, 431. 



" 18. MASTOGONIA SKXANGULATA, Ehrb. Mile., 33, 17, f. 12. 

 " 19. PYXIDICULA URCEOLARIS, Ehrb. Her., 1844, p. 86; Mik., 13, f. 



3a. 



" 20. CYCLOTELLA PHYSOPLKA, K-.; Prit., p. 811; Mik., 33, 12, f. 28. 

 " 21. LIOSTEPHANIA coMPTA, Ehrb. Ber., 1847, p. no; Mik., 36, f. 41; 



Abh., 1875. 1, f. 5, 6. 

 " 22. CYCLOTELLA PHYSOPLEA, Ehrb. Mik., 33, 17, 8, == Discoplea 



physoplea. 

 Figs. 23,24. ODONTELLA OBTTTSA, Kg., K. B., 18, f. 8, = Biddnlphia, aurita 



and obtusa; Schm. At., 122, 30. Nearly 



allied to Bid. lacvis. 

 " 25,26. BIBLARIUM (Stylubibliiini) CLYPEUS, Ehrb. Mik., 33, 2, f. 18; 



Sm. Sp. T., No. 58. Oregon. 



Fig. 27. XANTHIOPYXIS CINGULATA, Ehrb. Mik., 33, 17, f. 18. Va. 

 " 28. LITHODESMIUM CONTRACTUM, L. W. Bailey, B. J. N. H., p. 333, 



1, f. 8. Greenport, N. Y. Of doubtful 



value. H. L. S. says this is not a diatom. 



" 29. CHAETOCEROS DISTANS, CL; V. H., 82, f. 4. Mobile. 

 " 30. PYXIDICULA GIGAS, Mik., 33, 13, f. 18. Va. 



