552 



PROCEEDINGS OF THE NATIOISTAL, MUSEUM 



VOL. 87 



OPALINA FABER Carini 



Figure 120 







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Figure I'ia—Opaiina faher Carini from Hylafaber, X ca. 230. (After Carini.) 



Host: Hyla faber Wied, from Brazil. 



The body is flat, elongated, and slightly bent. There is a great 

 range of variation in size. Most of the fully grown individuals measure 

 150/x to 200/i in length, and the largest specimens measure 300;i. 

 Some slender individuals measure 30 n to 40/i in width; the larger ones 

 QO/jL to 70/i or more. 



The large specimens are fusiform, with maximum width in the 

 middle; the posterior end generally tapers. In the large forms there 

 are as many as 7 to 9 rows of spherical nuclei. Figure 120 shows three 

 medium-sized specimens; a long and slender one measuring 285 by 

 44/x, a large and fusiform one measuring 228 by 80/x, and one showing 

 the beginning of longitudinal division. 



OPALINA NEBULOSA Carini 



Figure 121 



Host: Hyla nebulosa Spix, from Brazil. 



The body is elongated, slightly bent, and comma-shaped. The 

 maximum width is near the anterior end; the body becomes slenderer 

 toward the posterior end, which is blunt. The contour of the anterior 

 end is not round but appears as if cut obliquely on one side. 



