124 



Fig. 54. Echinella crenulata. Length without feet: 



0,000115. 



55. Two cells, a. mouth 5 b. b. lateral openings; 

 c. c. square foot, common to both; d. d. 

 brown content. 



JP fc A T E V. 



56. Closterium Lunula Nitzsch; strongly magni- 

 fied; breadth: 0,00316; length: 0,01735. 



57. The same animalcule, still more magnified; 

 a. mouth; b. rotatory bladder^ c. intestinal 

 tube; h. green content, with yellow oily 

 drops; f. dented section; g. transversal band, 

 transparent for want of the green content; 

 d. d. the two lateral intermedial openings. 



58. Point of a horn of the cuirass , strongly 

 magnified; a. mouth; b. intestinal tube; c. 

 rotatory bladder; d. dark corpuscules of this 

 bladder. 



59. Closterium acuminatum. Length: 0,00665. 

 Perhaps the Closterium Leibleinii Kiitzing. 

 (His drawing is too bad to ascertain it). Two 

 united animalcules; a. the mouth; c. rotatory 

 globules without bladder; e. intestinal tube 

 and content; d. d. intermedial lateral holes; 

 x. x. the same, by means of which both ani- 

 malcules exchange their content; g. trans- 

 veral bands. 



60. The whole animalcule of the same species. 



61. Closterium costatum. Thickness: 0,00147. 

 A. A. Horns of the cuirass; b. b. mouth; 

 a rotatory bladder; c. intermedial openings. 



62. Edge of the cuirass valve , in the point of 

 reunion of the two horns; d. its sides. 



63. Point of the cuirass of the same animalcule; 

 a. rotatory bladder; b. truncated extremity 

 of the cuirass, as mouth; c. the rotatory 

 globule in the bladder. 



