132 BULLETIN 120, UNITED STATES NATIONAL MUSEUM. 



ZELLERIELLA [of BUFO WOODHOUSE] new species (?). 



A specimen of this form has been deposited with the United States 

 National Museum as Cat. No. 16499. 



Host. — Bufo woodhousi Girard, one infection, from United States 

 National Museum specimen No. 36B64, 64 mm. long, from Utah, June 

 26, 1905. 



Fig. 1)8. — Zellekiella [of Bufo woodhousi] : a, a cell with two large nuclei ; t, 



A DAUGHTBB CELL WITH ONH I<AROD DCMB-BEiLL NUCIiKUS AND SIX SMALL NUCLEI (?) ; O, 

 AN OPTICAL, SAGITTAL SECTION OF A CELL SIMILAR TO THAT SHOWN IN O ; d, A SMALL 

 CELL WITH TWO SMALL NUCLEI ; 6, A DAUGHTER CELL FROM TRANSVERSE DIVISION, WITH 

 TWO LARGE NUCLEI AND FOUR SMALL NUCLEI (7); /, A DEGENERATING NUCLEUS; 0, A 

 LARGE CELL WITH TWO LARGE IRREGULAR NUCLEI AND FIVB SMALL NUCLEI (7) OP DIF- 

 FERENT SIZES ; f, IS MAGNIFIED 1,000 DIAMETERS, THE OTHER FIGURE 460 DIAMETERS. 



Several different sorts of individuals are found in this very inter- 

 esting infection. The figures show, 1, a large form with two large 

 nuclei and numerous small " nuclei " of various sizes (^) ; 2, a good- 

 sized individual with two large nuclei {a) ; 3, a daughter cell, recently 



