OF ANIMALCULES. /^ 



Vibrio, — ^This animalcule (figure 54) has generally one 

 or more protuberances on its dorsal surface ; the neck is 

 not very contractile, but longer than the body, which is 

 variously contorted vertically, the contractions indicating 

 that it propagates by division, and therefore should not 

 be taken as a specific character. Under careful exami- 

 nation, ciliae may be discovered on various parts of the 

 body. 



118. Vibrio falx (Trachelius falx, E.) The bent Vi- 

 brio. — This animalcule has a short neck, which is bent 

 and inflexible : the form of the body is elliptical, and 

 rounded at the posterior end. The mouth, which is dis- 

 tinguished with difficulty, is longitudinally disposed on 

 the inferior side of the neck. 



119. Vibrio intermedius. The medium Vibrio. — This 

 animalcule derives its name from an intermediate re- 

 semblance with the last species, and the Vibrio fasciola : 

 it is very flat and thin towards its anterior extremity, 

 which it constantly folds in various forms: it has a 

 bright talc-like appearance, and the inside exhibits a 

 number of polygastric sacs. Found in various vegetable 

 infusions. 



120. Vibrio amblyoxys, E. — This new species is the 

 l-600th of an inch long. For its generic characters, see 

 Book III. 



Third Division.— ENTOZOA. 



The following species of Vibriones are excluded from 

 both classes of the Phytozoa, as they possess an alimeu- 



