OF ANIMALCULES. 55 



longitudinal furrows, and a few transparent globules; 

 the fore part flattened out like a spatula, the corners of 

 which it can withdraw at pleasure. Its motion is wavy. 



59. Enchelis iruncus. The truncated Enclielis. — This 

 animalcule is the largest of the genus : it is capable of 

 altering its form, which is oblong, each extremity being 

 obtusely rounded : sometimes its anterior end is ex- 

 panded into a globular mass, when it also occasionally 

 sends out three lateral projections, like teeth. In this 

 condition it is shewn, magnified, at figure 35. In pro- 

 gressing it rolls about slowly, and swims in a direct 

 course. 



60. Enchelis larva. — This animalcule resembles the 

 Enchelis caudata (see figure 28), but is distinguished 

 from it by a slight contraction near the head, forming a 

 neck, and also by a small projection on each side 

 of the body. It is found in marshes, and is very 

 scarce. 



61 . Enchelis j9wj3M/a.— This species resembles in form 

 a pear ; the anterior part is like the base of that fruit, 

 out of which issues, in place of a stalk, a papillary pro- 

 jection ; while at the other end may be observed a large 

 transparent circle. The fore part is dark, and filled 

 with moveable molecules. It swims obliquely in the 

 water, occasionally rotating on its longer axis. It was 

 found in water drained from a dunghill, in November. 



62. Enchelts deses {Bacterium deses, E.) The slothful 

 Enchelis. — This animalcule is of a dark green colour, 

 with the ends lighter. Its form is given at figure 65. 



