MICROCOBYCIA. 25 



Test composed of a flexible membrane, discoid or 

 approximately hemispherical in form, with a fine, 

 diaphanous continuation or fringe around the peri- 

 phery, capable of being folded together or completely 

 closed by the drawing together of the free borders ; 

 the crown of the test smooth or furnished with excre- 

 scences; the plasma not entirely filling the test; nuclei 

 one or two in number ; pseudopodia lobular or digitate. 



The description of this genus as Corycia by Dujardin 

 is far from explicit and is unaccompanied by any 

 drawing; we have followed Penard in identifying it 

 with Ampliizonella flava Greeff and not with Pamphagus 

 mutabilis Bailey (Lecyihium mutabile), as suggested by 

 Leidy. 



SYNOPSIS OF THE BRITISH SPECIES. 



Test 80-100 /m (or more) in diameter ; crown of test smooth 



or sparsely covered with small adherent grains. (1) M. flava. 



Test minute, 24-30 ju in diameter. (2) M. radiata. 



1. Microcorycia flava (Greeff) Cockerell. 

 (Plate LVIII, figs. 11-13.) 



Amphizonella flava 



GREEFF in Arch. mikr. Anat. II (1866), pp. 329-330, pi. xviii, f. 19 a, b. 

 ARCHER in Qrt. Jrn. Micr. Sci. (2) XI (1871), pp. 130-131, 134-135. 

 MAGGI in Rend. R. 1st. Lamb. (2) X (1877), pp 309, 315-324, pi. ii, 



ff. 1-6, 8, 11, 12. 

 Corycia dujardini 



GAGLIARDI in Qrt. Jrn. Micr. Sci. (2) XI (1871), p. 80. 

 Corycia flava 

 PENARD Faune Rhiz. Leman (1902), pp. 173-177, 9 figs. ; in Arch. 



Protist. II (1903), p. 254; op. cit. XVII (1909), pp. 259-^60; Sarco- 



dines in Cat. Invert. Suisse (1905), p. 31. 

 AVERIXTZEFF in Trudui S.-Peterb. Obshch. XXXVI, n (1906), 



pp. 142-143. 



SCHOUTEDEN in Ann. Biol. lacustre, I, 3 (1906), pp. 232-233. 

 BROWN in Naturalist, 1910, p. 92 ; in Brit. Assoc. Handb. Sheffield 



(1910), p. 500. 

 WAILES & PENARD in Proc. R. Irish Acad. XXXI, LXV (1911), pp. 9, 



15, 23. 

 WAILES in Jrn. Linn. Soc., Zool. XXXII (1912), pp. 123, 131 ; loc. cit. 



(1913), pp. 212-214. 



HEINIS in Mem. Soc. Neuchatel, V (1914), pp. 677, 681, 696. 

 Microcorycia flava 



COCKERELL in Zool. Anzeig. XXXVIII (1911), p. 137. 



