SPHENODERIA. 57 



Penard, although differing considerably both in form 

 of the test and of the aperture from the other members 

 of the genus, may be appropriately included in it. 



8. pulchella Gr. S. West * belongs to the genus 

 Paulinella. 



SYNOPSIS or THE BRITISH SPECIES. 

 SECTION A. Aperture linear. 



Test more or less globular, formed of numerous circular or 

 bi-oadly-oval scales. (]) 8. lenta. 



Test ovoid, formed of four transverse rows of oval scales. 



(2) S. fissirostris. 



Test small, ovoid, compressed; each broad face formed 

 principally by two lar^e oval plates. (3) 8. macrolepis. 



SECTION B. Aperture circular. 



Test ovoid, not compressed, formed of circular or broadly- 

 oval scales; aperture having a thin dentate lip. (4) S.dentata. 



1. Sphenoderia lenta Schlumberger. 

 (Plate XLII, figs. 2-13; and figs. 132-135 in text.) 



Sphenoderia lenta 



SCHLUMBERGER in Ann. Sci. nat. (3) III (1845), p. 256. 

 EHRENBERG in Abh. Akad. Berlin, 1871 (1872), p. 236. 

 LEIDY (pars) Freshw. Rhiz. N. Amer. (1879), pp. 229-232, 290, 292, 



pi. xxxiv, ff. 25-33, 35-39, 41; in Proc. Acad. Philad. 1879, 



p. 163. 



HITCHCOCK Synops. Freshw. Rhiz. (1881), pp. 40-41. 

 TARANEK in Sitzber. bohm. Ges. Wiss. 1881, pp. 224, 235. 

 PENARD in Mem. Soc. Geneve, XXXI, 1, n (Ifc90), pp. 183-184, pi. x, 



ff. 25-29 ; in Jahrb. nassau. Yer. Naturk. XLIII (1890), p. 72 ; in 



Rev. Suisse Zool. IX (1901), p. 238; op. cit. XIII (1905), p. 603; 



XYI (1908), pp. 462, 466; Faune Rhiz. Leman (1902), pp. 520-523, 



7 figs.; Sarcodines grands Lacs (1905), pp. 108, 117 ; Sarcodines in 



Cat. Invert. Suisse (1905), pp. 107-108 ; in Proc. Roy. Soc. Edinb. 



XXV (1905), pp. 595, 597; in Rev. Suisse Zool. XVI (1908), pp. 



462, 466. 



CASH in Trans. Manch. Micr. Soc. 1891 (1892), p. 52, pi. ii, f. 5. 

 ENTZ in Math. Termesz. ertes. XV (1897), pp. 172, 176, 178; in Math. 



nat. Ber. Ungarn, XV (1899), pp. 183, 186, 188. 

 DADAY in Anh. Termesz. Fiizetek, XXI (1898), pp. 7, 9. 

 EYFERTH Einfach. Lebensf., ed. 3 (1900), p. 268. 

 LAGERHEIM in Geol. Foren. Stockholm Forh. XXIII (1901), p. 472. 



* ' Jrn. Linn. Soc.,' Zool., vol. xxix (1903), p. 115. 



