60 SPOEOZOA. 



Remarks. — Instances of solitary encystment and, more 

 rarely, cysts containing three individuals were encountered. 

 I have emended the spelling of the specific name to make it 

 conform correctly to that of the person to whom the species 

 is dedicated. 



Habitat. — Seminal vesicles of Megascolex trilobatus (Steph.) : 

 Bombay, Bombay. 



Genus NEMATOCYSTIS Hesse, 1909. 



Nematocystis, Hesse, 1909, p. 45 ; Cognetti, 1918, p. 149 ; 1921 a 

 pp. 153-4 ; 1921 b, pp. 552-4 ; Berlin, 1924, pp. 67-8, 74, 83-7 

 Cognetti, 1925, p. 231 ; Bhatia & Chatterjee, 1925, pp. 193-7 

 Bhatia & Setna, 1926, pp. 364-7 ; Reichenow, 1929, p. 887 

 Bhatia, 1929, pp. 124-5 ; 1930, p. 158 ; Calkins, 1933, p. 559. 



Trophozoites elongated, cyhndrical, shaped like a Nema- 

 tode worm, attaining even up to 5 mm. in length. Solitary. 

 Sporocysts as in the family. 



Key to Indian Species. 



1 (6). Trophozoite tapering at one or both ends. 2. 



2 (3). Trophozoite tapering at either end. 



Nucleus long, fusiform, with two [p. 60, 



karyosomes iV. hessei Bh. & Ch., 



3 (2). Trophozoite with anterior end rounded, 



posterior end pointed 4. 



(5). Nucleus long, fusiform, with single karyo- [p. 62. 



some N. lumbricoides Hesse, 



5 (4). Nucleus elongated oval, with several [Bh. & Ch., p. 62. 



karyosomes N. plurikaryosomata 



6 (1). Trophozoite usually rounded at both 



ends 7. 



7 (8). Anterior pole without epimeritic denti- 



culations, posterior pole not covered 

 by fine hairs. Nucleus usually in the 

 middle of the body, with single karyo- [Set., p. 63. 



some N. stephensoni Bh. & 



8(7). Anterior pole with epimeritic denticula- 

 tions, posterior pole covered by fine 



hairs. Nucleus near one end of the [p. 64. 



body, with single karyosome N. vermicularis Hesse, 



6. Nematocystis hessei Bhatia & Chatterjee. (Fig. 8.) 



"fNematocystis hessei, Bhatia & Chatterjee, 1925, pp. 194-5, pi. viii, 

 figs. 11, 11a, 12 ; pi. ix, fig. 24. 

 Nematocystis hessei, Cognetti, 1925, p. 231 ; Bhatia, 1929, p. 125. 



Trophozoite elongated like a worm and tapering at either 

 end. No epicytal striations. Nucleus long and fusiform, 

 with two karyosomes, which are sometimes very unequal in 

 size. 



Dimensions. — Up to 552 ju, in length by 42 /a in thickness. 



