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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 87 



viduals. Mitosis was not described, and in consequence the number 

 of nucleoli is not definitely determined. 



PROTOOPALINA BIBRONn. new species 



Figure 22 



Type: U.S.N.M. No. 22621. 



Host: Pseudophryne bibronii Gtinther, four infections from Australia 

 as follows: U.S.N.M. No. 10968 from the Paris Museum; No. 63181 

 from Port Lincoln, Kangaroo Island; and two, Nos. 64056 and 



Figure 22.— Protoopalina bibronii, new species: Upper three groups of figures, X 146; other four, X 673. 



64057, from Ehor, New South Wales; these and the Port Lincoln 

 specimen collected by Hoy. 



Measurements in microns: Body, 80 by 25 (average specimen), 

 60 by 37 (wide form), 67 by 20 (narrow form); nuclei, 21 by 6, 17 by 

 8, 11 by 6, 9 by 6 ; cilia hne interval anteriorly 2, posteriorly 3. Nucleoli 

 number 4. The infection in frog No. 63181 (fig. 22, upper left group) 

 shows many broad, flat forms, with regions of the protoplasm abnor- 

 mal, the animals containing generally a huge, irregular, lateral vacuole. 

 Had these abnormal, partly degenerate, usually flattened forms been 



