THE AM ERICAN 



MONTHLY 



MICROSCOPICAL JOURNAL 



Vol XVIII. APRIL, 1897. No. 4 



Notes on Some Xew. or Presumably New. Infusoria. — I. 



Hv J. C. SMITH, OK 



NEW ORI.KANS, LA. 

 iWlTH I-RONTISPIEl I-; 



The chissificatioii followed in this papri- is that adopttMl 

 hv Saville Kent in his -'Manual of the Infusoria.'" 

 Family. — Actinomonadidfe. S. K. 

 Grenus. — Actinonionas. 8. K. 

 Species. — Actinomonas primus (lio-s. I, 2. and 3). 



I5(»(lv in active flagellate stage cylindrical, \arial le in 

 foiin, usuall V oliovate willi fhe posterioi' continued as a 

 caudal piolonuation, sometimes ovate and at other times 

 irregular in shape and nodulate; the largest and usual 

 obovate form ahout twice as long as wide; flagellum sin- 

 ol(- .-inhMior. f(|iialling one longest body length and 

 vihratile tlirough its whole extent: contractile scsich" 

 conspicuous and located in postei'ior body half; nucleiL'^ 

 round and subcentral; endoplasm hyaline containing to a 

 greater or lesser extent, ;i numbei of bcaddike granules 

 of a hlueish tint, presumably food: locomotion c(|iiable, 

 fairly rapid and by i-evolution on long axis. 



Size l-r25<) inch. Habitat 1 nf usion of aquat ic pl.mts 



Body in Ilrjio/.oan stag(> vaii.-ibb' in form, usually sub- 

 glol)osi' and undfrsi-oing slight (diang<"s of contour: rays 

 nunnM-ous, line aiiii projecteil from all parts of the 

 pciipherv: eiiuallin;^- iu length from one to two diameters 

 otthezooid; flagellum quiescent and coiled close to the 

 body. 



