5 6o 



Microscopical Essays, 



147. Leucophra Mamilla. 



. Leucophra fphaerica, opaca, papilla exfertili. Spherical opake 

 leucophra, with a fmall papillary projection. 



It is of a dark colour, and filled with globular molecules, the 

 fhort hairs are curved inwards ; it projects, and draws in occa- 

 fionally a little white protuberance, not uncommon in marfhy 

 water. 



148. Leucophra Virifcens. 



Leucophra cylindracea, opaca, poftice craffiore. Cylindrical, 

 opake leucophra, the lower part much thicker than the upper 

 part. 



This is a large, pear fhaped, greenifh coloured animalculum, 

 filled with opake molecules, and covered with fhort hairs, gene- 

 rally moving in a f Ira it line. Found in fait water. 



149. Leucophra Viridis. 



Leucophra ovalis opaca. Oval, opake leucophra. 



Though at firfl fight it may be taken for a variety of the leu- 

 cophra virifcens, yet on a further examination, it diners in many 

 particulars ; it cannot lengthen and fhorten it 'elf in the fame 

 manner that does. It is alio much fmaller. Sometimes it is feen 

 to be contracted in the middle, as if it was going to be divided 

 in two. 



1^0. Leu- 



