IIELMINTHOLOGY IIELMINTHES DUBI1. 497 



creature, consequently, if it be actually an independent 

 animal, must be referred to the Infusoria. Its body is 



\j 



contractile, and furnished on one side with an actively 

 vibrating ciliated lobe. Gruby (Comptes rendus, 1843, p. 

 1134; or Annales des Sci. Nat. 1844, torn, i, p. 104, PI. 1, 

 i?; or Froriep's neue Notiz. Nr. 604, 1843, p. 152) has 

 named this hsematozoou, which he discovered in the blood 

 of adult Frogs, Trypanosoma satiguinis. He describes the 

 animal as having an elongated flattened body, with a fila- 

 mentary prolongation at each end, it is jagged at one lateral 

 margin, and rotates on its longitudinal axis. The lateral 

 margin appears jagged only in consequence of an optical 

 delusion during the movements of the laterally attached 

 ciliary fringe. 



Mayer (De organo electrico et de h?ematozois, 1843, p. 

 10, Tab. iii, Figs. 10, 11) saw in the blood of the green Grass- 

 frog, two different animalcules swimming about actively, 

 one of which (Paramascium loricatum, or costutum, May.) is 

 said to be oval, obliquely striated, and furnished anteriorly 

 with cilia, whilst the other (Amoeba rotatoria, May.) pre- 

 sented a slender, elongated, very mutable body, furnished 

 with a lateral, rotorial, ciliary apparatus. Both forms cer- 

 tainly belong to the Trypanosoma described by Gruby, to 

 which also it is most probable that the Eutozoon found by 

 Hyrtl (Mullens Archiv, 1843, p. 238) in the lateral canal 

 of a Trout, and which corresponded with the worm dis- 

 covered by Valentin in the blood of that fish, should be 

 referred. 



Will (Horse tergestinse, 1844, p. 78, et 81) could almost 

 always perceive in the cavities of the stomach, the respi- 

 ratory tubes and sexual organs of Diphyes Kochli, which 

 communicate with each other, elongated Entozoa pointed 

 at each end, which were smooth externally and rather flat- 

 tened, and varied in size from ^th to ^th of a line. They 

 exhibited a very active serpentine motion, and swam about, 

 especially in the respiratory cavity with great facility, and 



attached themselves also by one extremity of the body, which 



32 



