170 BULLETIN 120, TXITED STATES NATIONAL MUSEUM. 



Bezzenberfrer (1904) gives a good description of this species with 

 good figures. The bod}^ is greatly elongated, rounded in front and 

 tapering posteriorly to a rounded point. The anterior end of the 

 body is flattened so that in longitudinal section it would be wedge- 

 shaped. In cross section the body is broadly elliptical. Bezzen- 

 berger sa3's the nuclei are spherical or ellipsoidal, of a diameter of 

 4.5[j, to 5.3[jt., but one of his figures shows ellipsoidal nuclei 5.25[j. x 7.5[x. 

 He figures and describes the basal granules of the cilia as very slen- 

 der, elongated rods 4^. by 0.33[ji,, a feature difficult to understand. 

 There may be some confusion here. If not, then Bezzenberger's 

 Opalina [Cepedea'] long a differs most decidedly from my specimens 

 of what seems to be this species, and from all other known Opalinids, 

 in which, without exception, the basal granules of the cilia are 

 spherical, or nearly so. Bezzenberger figures the cilia as of moderate 

 length. 



My specimens of the Opalinid from Eana Ihnnocharis are larger 

 than Bezzenberger's and have nuclei in general more elongated and 

 smaller than those he figures, and as noted the basal granules of the 

 cilia are very different. It seems there must be some error in the 

 latter feature of Bezzenberger's description. The other divergencies 

 between his specimens and mine it seems best to regard as racial 

 rather than specific. 



CEPEDEA, species? (fig. i;'.8). 



Host. — Hyla veriscolor chrysoscelis Cope, one very scant infection, 

 from New Braunfels, Texas, from United States National Museum 

 specimen No. 3234, 40 mm. long, collected by Lindheimer. One in- 

 dividual only was found, along with specimens of Opalina^ species?. 

 (See p. 221.) 



Measurements of an average individual. — Length of body, 0.343 

 mm.; width of body. 0.0346 mm.; diameter of nucleus, 0.0034 mm. to 

 0.00425 mm. ; diameter of endospherule, 0.0015 mm. ; cilia line in- 

 terval, anterior 0.0018 mm., posterior 0.00325 mm. 



This Cepedea looks someAvhat like a short C. longa. It has cilia 

 of about the same length. The nuclei of this Opalinid are spherical, 

 wdth the exception of a few in mitosis. The axial region of the endo- 

 plasm is less dense than its outer portion. Of course it is not well 

 to name a new species from this single specimen. It has been de- 

 posited wnth the National Museum in a slide of Opalina, species (?) 

 as Cat. No. 16579. 



CEPEDEA OPHIS, new species (fig. 130. p. 172). 



Type.— Vnited States National Museum Cat. No. 16520. 

 Host. — Rana tigerina Daudin, two scant infections from Formosa, 

 and two very abundant infections from Billeton Island, near Su- 





