54 NATURAL HISTORY 



54. FiSCHELis gemmata. The brilliant Enchelis. — This 

 animalcule is about the size of the last species. The body 

 is more cylindrical, and has two rows of bright globules 

 running down the interior ; the neck is elongated, and 

 very transparent : the whole resembles a Champagne 

 bottle. Its motion is slow. Found in stagnant water 

 among duck-weed. 



55. Enchelis retrograda. — This gelatinous animal- 

 cule usually moves sideways, like a crab, and sometimes 

 backwards. The body is thickest in the middle, and 

 tapers off at each extremity : when obstructed in its 

 motion, it draws itself up like figure 30. The anterior 

 end is marked by a cross. 



56. Fi^ cHBLjs fes Una ns. The restless Enchelis. — This 

 animalcule is found in sea- water ; it is very diaphanous, 

 and of the form shewn in a magnified view, figure 3L 

 The anterior part is marked with a cross. It is in con- 

 stant motion, and appears as if vibrating from one side 

 to the other. 



57. Enchelis index, — This curious species of Enchelis 

 is capable of varying its form. Sometimes it assumes a 

 globular shape; at others, a small projection may be 

 seen, as at figure 32, while its most common form is 

 shewn at figure 33, its anterior part having two projec- 

 tions like a finger and thumb. It is of a grey colour, 

 and moves slowly. Found among the small duck- weed. 



58. Enchelis spathula. — This animalcule is repre- 

 sented, magnified, at figure 34. The body is marked by 



