318 FEESH -WATER RHIZOPODS OF NORTH AMERICA. 



Stein, Friedrich. 



Die Infusionsthiere auf ihre Entwickelungsgeschichte untersucht. Leipzig, 1854. 



Actinophrys sol, Ehr., 140, 151, 164, 25S, Taf. iv, Fig. 20-28. = An Acineta. 

 Actinophrys Eichhornii, Ehr., 148, 151, 161, 163. = Actinospilerium eichhornii. 

 Actinophrys oculata, 151, 157, Taf. v, Fig. 25-28. = Actinophrys sol in conjugation T 



Tatem, J. U. 



On Free-swiimning Amoebae. Monthly Microscopical Journal. Transactions of 

 the Royal Microscopical Society, London, 1S69, i, 352, pi. xvii. 

 Amoeba princeps, Amoeba Umax, Amoeba diffluens. 

 Amoeba guttula, Amoeba por recta, Amoeba villosa. 

 Amoeba with a flagcllum, Group B, pL xvii. 



Notes on New Infusoria. Ibidem, 1870, iv, 313, pi. lxviii. 



Difflugia ligata, Fig. 1. = Hyalospiienia cuneata. 

 ^ Conjugation of Amoeba. Ibidem, 1871, vi, 275. 



Amceba villosa. 

 A phase of Actinophryan Life. Ibidem, 1872, vii, 169, pi. xv. 



Actinophrya sol. = Heterophrys ? 



Wallich, ««. €. 



On an undescribed Indigenous Form of Amceba. The Annals and Magazine of 

 Natural History, Loudon, 18C3, xi, 287, pi. viii. 

 = Amceba villosa. 



Further Observations on an undescribed indigenous Amoeba, with notices on 

 remarkable forms of Actinophrys and Difflugia. Ibidem, 365, pi. ix. 

 Amceba villosa. 



Further Observations on Amceba villosa and other indigenous Rhizopods. Ibidem, 

 434, pi. x. 



Amceba villosa, figs. 5-10. 



Amceba radiosa, 443, Amwba princeps (var. radinsa), 453, figs. 1-3. =Amceba proteus! 



Actinophrys Eichhornii, 444, 453, figs. 1-3. — ActinospHjErium eichhornii. 



Actinophrys sol, 446, 453, fig. 4. 



Difflugia proteiformis (var. septifera), 453, fig. 12. = Difflugia spiralis. 



Difflugia proteiformis (var. acuminata), 453, fig. 13. = Difflugia acuminata. 



Arcella vulgaris, 453, fig. 14. 



On the Value of the Distinctive Characters in Amoeba. Ibidem, 1863, xii, 111. 

 Further Observations on the Distinctive Characters and Reproductive Phenomena 

 of the Amoeban Rhizopods. Ibidem, 329, 448, pi. viii. 



Difflugia pyriformis (var. symmetrica), 458, 467, fig. 16. = Quadrula symmetrica. 

 Amceba villosa, figs, of pi. viii, except 16, an<l probably 10, which looks like Amceba 

 verrucosa. 



On the Process of Mineral Deposit in the Rhizopods and Sponges as affording a 



Distinctive Character. Ibidem, 1864, xiii, 72. 

 On the Extent and some of the Principal Causes of Structural Variation among 

 the Difflugian Rhizopods. Ibidem, 215, pi. xv, xvi. 

 Classification of forms, page 240, as follows: 

 Species 1. Difflugia, proteiformis (Ehr.). 

 Subspecies 1. D. mitriformis (Wal.). 

 Variety a. D. acuminata (Ehr.). 



b. D. spiralis (Leclerc). 



c. D. pyriformis (Perty). 



d. D. lageniformis (Wal ). 



