LITTLE-KNOWN BRITISH RHIZOJPODg. 8l 



Penard''s description o£ that species. In the broad view o£ the animal, it 

 shows a straight line running at right angles to the end o£ the body, due to 

 the tight compression o£ the two incurved lips. In partial side view, two 

 curved lines crossing one another represent the edges o£ the lips, which in 

 narrow view disappear ; while an end view shows a straight line stretching 

 nearly across the test. In most cases the mouth was closed tightly by 

 compression o£ the lips (as may be inferred £rom the difficulty in getting 

 stains to penetrate), but in one or two small individuals £rom High Lodore 

 the lips were separated (see PI. 9. fig. 12). Whether this is a natural state 

 it is difficult to say. 



The protoplasm fills the whole space within the test. It is colourless or 

 greyish and contains many inclusions. Immediately within the membrane is 

 a layer o£ brilliant droplets, of small size and highly refractive (oil). The 

 general protoplasm contains many minute granules, together with larger 

 food-bodies, including small green Algse and even diatoms of considerable 

 size. They show various stages of digestion and vary from yellowish to 

 brownish. The size of the food-bodies observed demonstrates that the mouth 

 is capable of considerable distension. In respect to the food-bodies this species 

 difiiers very much from C. brt/orum. 



Several vacuoles occur. They originate in the protoplasm of the body and 

 slowly move towards the mouth end, enlarging at the same time. Then 

 somewhere in the neighbourhood of the mouth they disappear, but the process 

 is not that of a sudden collapse, they seem to become lost gradually. 



The nucleus is single, but not readily seen. It appears to contain a single 

 spherical chromatin body, surrounded by a clear space. It is not of specially 

 large size. 



As is characteristic of most Rhizopods from the drier mosses, the animals 

 seem remarkably shy under observation and rarely put out their pseudopodia. 

 This may be due in large measure to the unnatural conditions under which 

 they are examined. In the few cases when pseudopodia were seen, a small 

 mass of clear protoplasm was noticed on the outer side of the test in the 

 region of the mouth (which was not observed to be dilated), and from this 

 a single fine filose pseudopodium originated, which by extension and 

 contraction varied greatly in length. It was able to bend upon itself, and 

 even swung round slowly as a whole. The movement of the animal is very 

 similar to that of Euglyplia, being of a somewhat jerky nature. 



The animals have not been observed to divide. The process of division of 

 C. hryorum, described by Penard, seems peculiar, in that the outer test is 

 divided longitudinally at the same time as the inner body. 



In some individuals the body protoplasm takes on a different appearance. 

 It becomes broken up into numerous spherical bodies of about 3 fi diameter, 

 which completely fill the test. This condition may possibly be connected 

 with reproduction. In collections kept for some time, the protoplasm 



