ABSTRACT OF THE INFUSIONSTHIERCHEN OF EHRENBERG. 



117 



FAMILY I. MONADINA. 



Polygastric animalcules having no distinct intestinal canal, lorica, or 

 appendages ; body uniform and constant in shape, dividing by sponta- 

 neous self-division not only into two portions, but by cross division into 

 four or more. 



All self-moving little bodies discoverable in water by 

 the aid of the microscope, destitute of feet, hairs, bristles, 

 or other external appendages ; possessing no special ge- 

 latinous, membranous, or hard covering, like a lorica, but 

 provided with internal digestive sacs, or stomachs, with- 

 out a distinct intestinal canal uniting them together ; 

 not clustering in a chain, but sometimes appearing 

 as if double, from the constriction of self- division, or 

 from decussating constrictions, as if composed of four portions, or 

 even-looking, like a mulberry ; and whose globose, oval, or elongated 

 bodies, during rest or motion, show no voluntary change of form : 

 belong to the family Monadina. The following is a Synoptical Table 

 of the Genera. 



Eye not 

 present 



Solitary 



( Proboscis one or two MICROGLENA. 



/ f / (Solitary MONAS. 



!?** v\f\4- 



(voluntarily UVELLA. 



Aggregated-! 



v through self-division POLYTOMA. 



Lip not ( J 



present 



"* i 



Eye presents v Probiscides many PHACELOMONAS. 



\Aggregated GLENOMORUM. 



Rolling Doxococcus. 



^ Lip present CHILOMONAS. 



Tail present BODO. 



