450 INFUSORIA. NUUA. 



C. rostratum, Lam. Oval, pellucid, subacute behind. In vegetable 

 infusions. Mull. pi. 11, fig. 11, 12. 



Gen. 5. GONIUM, Lam. 

 Body very minute, simple, flattened, short and angular. 



G. pectorale, Lam. Quadrangular, pellucid, of sixteen globules. 

 Inhabits pure waters. Mull. pi. 16, fig. 9. 



G. pulvinatum, Lam. Quadrangular, opaque, twisted. In the wa- 

 ter of dunghills, A/w//. pi. 16, fig. 12, 15. 



SECTION II. 

 Body of perceptible thickness. 



Gen. 6. VIBRIO, Lam. 

 Body very minute, simple, cylindrical and prolonged. 



The Vibrio aceti, or the vinegar eel, as it is called, has, it is said, a mouth furnished 

 with two lips and an alimentary canal, and if this be the case it belongs to the class 

 of worms. 

 V. lineola, Lam. Linear, very minute. In vegetable infusions ; one 



of the most minute of animals Mull. Inf. pi. 6, fig. 1. 



V. vermiculus, Lam. Cylindrical, gelatinous, tortuous. Inhabits 

 water of marshes. Mull. Inf. pi. 6, fig. 10, 11. 



V. bipunctatus. Lam. Linear, equal, truncated at the extremities, 

 with two points in the middle. Found in long kept sea water. 

 Mull. Inf. pi. 7, ng. 1. 



Gen. 7. ENCHELIS, Lam. 



Body very minute, simple, oblong, cylindrical, but the form va- 

 riable. 



E. viridis. Lam. Subcylindrical, obliquely truncated before. In 

 water old kept. Mull. Inf. pi. 4, fig. 1. 



Gen. 8. PROTEUS, Lam. 



Body very minute, simple, transparent, of changeable form, di- 

 versely lobed instantaneously. 



P. diffluens, Lam. Body diverging into branches instantaneously. 

 Found in the water of marshes. Mull. Inf. pi. 2, fig. 1, 12. 



Gen. 9- VOLVOX, Lam. 



Body very minute, simple transparent, spherical or ovoid, turn- 

 ing upon itself as upon an axis. 



These animalcules whirl round upon themselves with greater or less quickness. 

 In many the body is composed of moving globules united in a common mass. 



V. globulus, Lam. Globose, subobscure behind. Mull. Inf. pi. 3, 

 fig. 4. 



V. socialis, Lam. Spherical, the crystalline molecules at equal 

 distances. Inhabits waters of rivers Mull. Inf. pi. 3, fig. 8, 9. 



V. globator, Lam. Spherical, membranous, with scattered globules. 



