DIEHYNCHOCYSTIS. 87 



of the gametocysts. The other type of gametocyst contamed 

 a mass of very pecuUar sporocysts, 20 ju, by 4 ju, ui size, and with 

 rounded anterior and posterior ends ; each sporocyst is bi- 

 laterally symmetrical, covered by a thick membrane, and 

 contains a well-defined nucleus. 



Habitat. — Mid-gut of Morphysa sanguinea Montague (=ilf . 

 furcellata Crossland) : Andamans, Port Blair. 



Incert^ sedis. 

 Genus DIRHYNCHOCYSTIS Cognetti, 1921. 



Dirhynchocystis, Cognetti, 1921 a, p. 150 ; 1925, pp. 229, 233. 

 Echinocystis, Bhatia & Chatterjee, 1925, p. 197. 

 Dirhynchocystis, Bhatia, 1929, p. 125 ; Reichenow, 1929, p. 887 ; 

 Bhatia, 1930, p. 165. 



Solitary. Body ovoid, with two subcyhndrical appendages, 

 arising from opposite sides. Sporocysts biconical, with similar 

 poles. 



Remarks. — Cognetti (1921) describes the two spine-like 

 prolongations as anterior and posterior, and regards each as 

 comparable to the trunk-hke process arising from the anterior 

 end of Ehynchocystis. To me these spines suggest a strong 

 comparison with the antero-lateral spines of Ancora, from 

 which the form can be derived by shortening and rounding 

 off the body. 



26. Dirhynchocystis globosa (Bhatia & Chatterjee). (Fig. 28.) 



"fEchinocystis globosa, Bhatia & Chatterjee, 1925, pp. 197-9, pi. viii, 



figs. 18, 19; pi. ix, figs. 26, 27. 

 Dirhynchocystis globosa, Cognetti, 1925, p. 233 ; Bhatia, 1929, 

 p. 125 ; Reichenow, 1929, p. 887 ; Bhatia, 1930, p. 165. 



Trophozoite possessing a more or less spherical body, with 

 two spine-hke structures radiating from the surface. Nucleus 



Fig. 28. — Dirhynchocystis globosa (Bh. & Ch.). 

 (After Bhatia and Chatterjee. ) 



large, generally ovoid, and containing a single karyosome. 

 Sporocysts biconical, with two similar truncated poles. 

 Dimensions of the trophozoite 74 /a by 65 /x. 



