46 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 89 



collected by A. C. Spencer, to show the very low lateral chambers 

 and to bring out the difference between the lateral chambers of 

 Lepidocyclina meinscri and L. perundosa. L. perundosa lacks the 

 strong pillars that are so well developed in L. ineinccri. 



Plate 5 



Figs. 1-3. Lepidocyclina (^Lepidocyclina) ivaylandvaugliani Cole. Fig. i, surface 

 views, X 5, of two specimens. Topotypes. Locality, quarry on 

 the Huasteca Petroleum Company's golf course, opposite Tampico, 

 Tamaulipas, Mexico, collected by W. S. Cole. Figs. 2 and 3, 

 Lepidocyclina {Lepidocyclina) waylandvanghani Cole from lo- 

 cality M29V, east of Los Naranjos, Vera Cruz, Mexico, collected 

 by T. W. Vaughan and D. R. Semmes. Fig. 2, horizontal section, 

 X 20, to show equatorial chambers. Fig. 3, vertical section, X 20. 



Fig. 4. Lepidocyclina {Lepidocyclina) forresti Vaughan. Vertical section, X 20, 

 of a cotype from Antigua. 



Figs. 5, 6. Lepidocyclina zcaylandvaughani Cole from locality M38V, Huasteca 

 Incline, Vera Cruz, Mexico, collected by T. W. Vaughan and D. R. 

 Semmes. Fig. 5, surface view, X 5, of a specimen to show extreme 

 development of papillae. Fig. 6, vertical section, X 20, of another 

 specimen similar to foregoing specimen, also showing relatively 

 large papillae. 



Plate 6 



Figs. 1-5. Lepidocyclina {Lepidocyclina) canellei Lemoine and R. Douville. 

 Fig. I, surface views of six specimens, X 5, topotypes, from 

 U.S.G.S. locality no. 6027, Bohio, Panama Canal Zone (locality 

 now covered by the water of Gatun Lake), collected by T. W. 

 Vaughan and D. F. MacDonald. Fig. 2, vertical section, X 20, 

 topotype. Fig. 3, horizontal section, X 20, topotype. Fig. 4, surface 

 views of four specimens, a dwarf variety, X 10, from locality 

 M12V, Arbol Grande, near Tampico, Tamaulipas, Mexico, collected 

 by D. R. Semmes. Fig. 5, horizontal section, X 20, of one of the 

 specimens represented by fig. 4. 



Fig. 6. Lepidocyclina {Lepidocyclina) pancanalis Vaughan and Cole, surface 

 views of six specimens, X 10. Cocoanut Hill, Antigua. 



Plate 7 



Lepidocyclina {Lepidocyclina) parvida Cushman. 

 Figs. 1-3. Sections, X 20, of three cotypes from U.S.G.S. locality no. 6862, lower 



bed at Hodges Bluff, Antigua, collected by T. W. Vaughan. 

 Figs. 4, 5. Two microspheric specimens from High Point, Antigua, collected by 

 W. R. Forrest. Fig. 4, horizontal section, X 20. Fig. 5, vertical 

 section, X 20. 



Plate 8 



Figs. 1,2. Lepidocyclina {Lepidocyclina) parvida Cushman, var. crassata 

 Vaughan and Cole, n. var., from locality M12V, Arbol Grande, 



