8 BRITISH FEESHWA'L'ER BHIZOPODA. 



Bncystment tests wliicli measure 1 10-125 ju. in length 

 occur ; they are the result, according to the observa- 

 tions of Penard, of the plastogomy of two individuals, 

 and contain an oviform cyst the test of which is com- 

 posed of oval scales and is about the size of a normal test. 



u, b c 



Fia. 111. — Body-scales of Euglypha sc^ltigera. x 900. a, normal form ; 

 b, intermediate form ; c, rudimentary form. 



2. Euglypha acanthophora (Ehrenberg) Perty. 

 (Plate XXXIII, figs. 3-5, and Pi. XXXV, fig. 2.) 



Euglypha alveolata 



DujAKDiN (pars) Zooph., Infas. (1841), p. 252, Atlas, p. 2, pi. ii, f. 9. 

 Geipfith & Henpeby Miorog. Diet. (1855), p. 247, pi. xxiii, f. 54. 



ed. 4 (1883), p. 306, pi. xxx, f. 54. 

 Lachmann in Verh. Ver. Bheinl. XVI, Sitzber. (1859), p. 93. 

 Pkitchaed Hist. Infus., ed. 4 (1861), p. 556, pi. xxi, f. 11. 

 Lbidy in Proc. Acad. Philad. 1874 (1875), p. 225 ; op. cit. 1877, pp. 262- 



264; (pars) 1878, pp. 171-172; (pars) Freshw. Btiz. N. Amer. (1879), 



pp. 207-214, pi. XXXV, fl. 7, 8, 15-17. 

 ScHULZE in Arch. mikr. Anat. XI (1875), pp. 97-101, pi. v, &. 1, 2. 

 Gabeibl in Morph. Jalirb. I (1876), p. 539. 

 Steasbuegee in Jena. Zeitsclir. X (1876), p. 413. 

 BuETSCHLl (pars) in Bronn',s Thierreiclis, I, 1 (1880), pi. iii, f. 12 a. 

 Getjbbe in Zool. Anzeig. Ill (1880), pp. 582-584. 

 Hitchcock (pars) Synops. Freshw. Bhiz. (1881), pp. 35-36. 

 Taeanek (pars) in Sitzber. bohm. Ges. Wiss. 1881, pp. 224, 233. 

 Blochmann Mikr. Thierw. Siisswass. (1886), p. 14, pi. i, f. 29; ed. 2, 



p. 18, pl.i, f. 22. 

 Ltjdwjg in Leunis' Synops. Thierkunde, ed. 3 (1886), p. 1170, f. 1156. 

 LOED (pars) in Sci. Gossip, XXVII (1891), p. 276, f. 216. 

 Pebnzbl (pars) in Bibl. Zool. IV, xii (1897), 1, pp. 137-140, pi. ix, f. 17. 

 Steneoos in Acta Soc. Fauna Fenn. XVII (1898), i, pp. 36, 85, 233. 

 Penaed (pars) in Rev. Suisse Zool. VII (1899), pp. 13, 105-121 passim; 



(pars) in Arch. Sci. nat. (4) VII (1899), pp. 253, 264, 265, 267 ; (pars) 



in Brit. Antarct. Exped. I, 6 (1911), pp. 220, 233. 

 Bypbeth Einfach. Lebensf. ed. 3 (1900), p. 266, pi. ix, f. 14. 

 Calkins (pars) Protozoa (1901), pp. 40, 47, 90, ff. 13d, 17 D; Proto- 

 zoology (1910), p. 23, f. 5a. 

 IssBL in Atti Soo. Torino, XXXVI (1901), pp. 64, 68. 

 West (pars) in Jrn. Linn. Soc, Zool. XXVIII (1901), p. 327. 

 OusHMAN & Hendekson (pars) in Amer. Natur. XXXIX (1905), p. 154. 

 OocKBEBLL (pars) in Univ. Colorado Stud. IV (1907), p. 262. 

 Bbovtn (pars) inNatnralist,1909,p.l07; (pars) in Brit. Assoc. Haudb. 



Sheffield(1910), pp. 500, 501. 

 POPOPP in Arch. Protist. XXV (1912), pp. 8-26, pis. i, ii, text-ff. a-h. 



