60 BEIT1SH FRESHWATER RHIZOPODA. 



p. 271 ; PAKONA in Boll. Sclent. I, an. 2 (1880), pp. 46, 

 48; SACCHI in Boll. Scieiit. Ill, an. 10 (1888), p. 41. 



Amoeba terricola GREEFF in Arch. f. Mikr. Anat. (1866), 

 p. 300, t. xviii; in Verh. Nat. Ver. Rheinl. XVII (1870), 

 p. 201 ; and in Biol. Centralbl. XI (1891), p. 599 ; TRIP 

 in Proc. Bristol Nat. Soc. n.s. IV (1870), p. 14; GAGLIARDI 

 in Q. J. Micr. Sci. XI, n.s. (1871), p. 80; BUTSCHLI in 

 Arch. f. Mikr. Anat. IX (1873), p. 676, t. xxi, f. 21 ; 

 MAGGI in Bend. R. 1st. Lomb. (2) X (1877), pp. 318, 321 ; 

 SCHNEIDER in Compt. Rend. LXXXVI (1878), p. 1557; 

 Du PLESSIS in Bull. Soc. Vaud. (2) XVI (1879), pp. 166, 

 325; LANESSAN in Rev. Intern at. Sci. VI (1880), p. 8, and 

 Traite Zool. I (1882), p. 42; PARONA in Boll. Scieiit. I, 

 an. 2 (1880), p. 46; GRUBER in Zeits. f. wiss. Zool. XL 

 (1884), p. 123; BEETHOLD Stud. Protopl.-mech. (1886), 

 p. 109 ; BLOCHMANN Mikr. Thierw. Siisswass. (1886), 

 p. 10, t. i, f. 9, and ed. 2 (1895), p. 13 ; BINET Vie psych, 

 in Psych, exper. (1888, 1891), p. 235; and (Engl. 

 transl.) Psych. Life (1889), p. 114; CERTES Cap. Horn 

 Zool. VI (1889), Prot. p. 20 ; SACCHI in Boll. Scient. Ill, 

 an. 10 (1889), p. 67; HERTWIG Lehrb. Zool. 1 (1891), 

 p. 149, and (Eugl. transl. ed. 1900) Man. Zool. (1903), 

 pp. 186, 189; GRIFFITHS Physiol. Invert. (1892), p. 375; 

 LONGI in Atti Soc. Ligust. V (1894), p. 15; PENARD 

 Faune Rhiz. Leman (1902), p. 104, ff., and p. 666. 



Thecamosba quadripartita FROMENTEL Etudes Microz. (1874), 

 p. 346, t. xxxviii, f . 3. 



Amseba rerrucosa MAGGI in Atti Soc. Sci. Nat. XIX (1876), 

 p. 407, t. ix, ff. 1-3 ; in Bend. R. 1st. Lomb. (2) IX (1876), 

 p. 541 ; and in Boll. Scient. .1, an. 2 (1880), pp. 34, 81. 



Amoeba papillata MERESCHKOWSKY in Arch, f . Mikr. Anat. 

 XVI (1878), p. 203, t. xi, ff. 31, 32. 



Saccamoeba verrucosa FRENZEL Mikr. Fauna Argent. I, 

 Prot. 1 (1892), p. 4, t. iv, ff. 1, 2, and 4 (1897), p. 146, 

 in Bibl. Zool. IV. 



Body of the animal, when at rest, roughly spherical, 

 oval, sub-quadrangular, or multilobate, always more 

 or less rugose or verrucose. Forward movement 

 effected by extensions of short anterior pseudopodia, 

 or by broad wave-like expansions of the ectoplasm, 

 which changes are accompanied by a wrinkling of the 

 surface, resulting in the production of more or less 

 regular longitudinal striations, very fine but distinctly 



