EXPLANATIONS AND REFERENCES, 

 PLATE LIV. 



Figures magnified 500 diameters. 



PAGE. 



Fig. 1. TETMEMORUS GIGANTEUS, . . . . .34 



" 2. DOCIDIUM ABCHERII ..... 25 



" 3. DOCIDIUM NODULOSUM, . . . . . .26 



" 4. DOCIDIUM WOODII, ...... 26 



" 5. DOCIDIUM BACULUM, Var. Floridense, . . . .26 



Figs. 6, 7. STAURASTRUM VESICULATUM, .... 42 



i: 8, 9 SPHAEROZOSMA PULCHELLUM, Var. bambusioides, . . 22 



Fig 10-13. EUASTRUM PECTINATUM, front, lateral and transverse views, 36 



" 14-16. HYALOTHECA DISSILIENS, Var. hians, . . . .21 



