906 THE ANIMAL KINGDOM. 



(ii) With filose pseudopodia, sometimes branched ', rarely anastomosing (= Eugly- 

 phina, Biitschli). 



(a) A single aperture : Pamphagus (^Plagiophrys, Lecythium, PhonergatesT), 

 test spheroidal or ovate and compressed, chitinoid, flexible, colourless, adapted to 

 the body ; Pseudo-difflugia ( = Pleurophrys ?), test thin, chitinoid, with a variable pro- 

 portion of fine sand, &c. ; Platoum (= Troglodytes, Chlamydophrys\ test chitinoid, 

 vasiform, elliptical or round in section, somewhat flexible, freshwater, damp earth, 

 and putrifying substances ; Plectophrys, like Platoum, but test fibrous ; Cyphoderia, 

 test retort-shaped, chitinoid, with minute oval plates ; Campascus, similar to Cypho- 

 deria, but incrusted with fine sand and two basal horn-like processes ; Euglypha, 

 test composed of oval or hexagonal siliceous plates disposed in longitudinal rows, 

 with or without minute spines, ovoid, sometimes compressed ; Placorista, test oval, 

 hyaline, colourless, composed of overlapping oval plates, compressed, edges and base 

 beset with moveable spines; AssuUna, test compressed, oval or spherical, composed 

 of oval or hexagonal plates, brown, aperture transversely elliptical, with ragged edges ; 

 Trinema, test hyaline, pouch-like, with oblique longitudinal axis, and sub-terminal 

 beaded aperture, homogeneous, or'composed of oval plates, with frequently beaded 

 borders ; Sphenoderia, test globular or oval, sometimes slightly compressed, with a 

 short broad neck, composed of overlapping oval, or large hexagonal plates. 



(b) With two apertures, i. e. amphistomatous : Diplophrys, globular or fusiform, 

 test, if present, very delicate, sometimes with foreign bodies, one or more yellow or 

 red oil-globules, sometimes colonial, freshwater, and in dung; Difrema, test 

 hyaline, yellowish, thick and rigid, edges of apertures somewhat inflected; Am- 

 phitrema^ test oval, incrusted with foreign bodies. 



Biitschli, Bronn's Klass. und Ordnungen des Thierreichs, i. ' Protozoa ' (under 

 Rhizopoda), pp. 3-229; Leidy, 'Freshwater Rhizopoda of North America,' U. S. 

 Geological Survey of the Territories, Washington, xii. 1879, pp. 23-232; Sum- 

 maries, by Archer, in Q. J. M. xvii. 1877*. 



Pelomyxa villosa, Amoebae, ' Studien iiber Amoeben,' Gruber, Z. W. Z. xli. 

 1884; Amoeba tentaculata, A. actinophora ; 'Beitrage,' &c., Id. ibid, xxxvi. 1882, 

 cf. A. N. H. (5), ix., and Wallich, ' Critical Notes,' A. N. H. (5), xvi ; Tricho- 

 sphaerium (=Pachymyxa), Amoeba obtecta, Id. ibid, xxxviii. 1883, pp. 46, 55, 330; 

 cf. A. N. H. (5), xi; Longicauda s. Ouramoeba, Pelomyxa; Korotneff, A. Z. Expt. 

 viii. 1879-80. Amoeba cellarum, Joseph, cf. Naples Zool. Jahresbericht, 1884, A. 

 Protozoa, p. 131. Lithamoeba, E. Ray Lankester, Q. J. M. xix. 1879. Endamoeba 

 Blattae, Leidy, A. N. H. (5), v. 1880; Butschli, Z. W. Z. xxx. 1878, p. 273. 

 Amphizonella, with terricolous Amoebae, GreerT, A. M. A. ii. 1866. Zonomyxa, 

 Niisslin, Z. W. Z. xl. 1884. Nebelidae, Taranek, Naples Zool. Jahresbericht, 1882, 

 A. Protozoa, p. 88 ; cf. Id. ibid. 1881, p. 100. Petalopus, Claparede and Lachmann, 

 Etudes sur les Infusoires, &c. i, 1858, p. 442. Arcellina, du Plessis, SB. Phys. 

 Med. Ges. zu Erlangen, 1876. Plectophrys, Entz, Naturhist. Hefte des Nation. 

 Museum zu Buda Pesth, i. 1877. Pleurophrys (= Pseudodifflugia) Genuensis 

 (marine), Gruber, Nova Acta, xlvi, 1884, p. 486. 



1 For the synonymy of the various genera, which is very difficult, and cannot be fully entered 

 into in such a work as this, see the list of genera in Biitschli, op. cit. pp. 176-8, 183-8 ; also Leidy, 

 op. cit. under the different genera and in his list of authors, pp. 297-319, in which he gives not only 

 the titles of their works, but the names and synonymy of the species described. 



