100 



SPOROZOA. 



Bemarks. — ^This species is more abundant than the larger 

 one found in the same host. 



Habitat. — Mid-gut of Lepisma saccMrinalAnn. (?) : Madras, 

 Coonoor. 



35. Gregarina cornwalli, sp. nov. (Fig. 37.) 



fGregarine parasite, " species A," Cornwall, 1915, pp. 128-30, pi. xi, 

 figs. 31 A-36. 



Large ; clearly visible to the naked eye when freed from the 

 stomach of its host. In the fully developed trophozoite the 

 epimerite contains a dehcate transverse septum, and is 

 divided off from the protomerite by another well-defined 



Fig. 37. — Gregarina cornwalli, sp. nov. A, adult trophozoite ; 

 B, chain of sporocysts. (After Cornwall.) 



septum. A trophozoite does not have its attachment in 

 any particular cell ; the globular epimerite appears to be held 

 in a cavity, that it has formed, by the pressure of the neigh- 

 bouring cells round its neck. Several cells seem to have been 

 destroyed to make room for it. In dissections trophozoites 

 readily free themselves from their attachments, either leaving 

 the epimerite behind or soon casting it off. The remaining 

 two segments wander about the field. Deutomerite contains 

 an irregular-shaped nucleus in its anterior part. Nucleus 

 contains a distinct, centrally placed karyosome, with a ring of 

 chromatin material round it. Sporonts coalesce and surround 

 themselves with a common capsule. Gametocyst rapidly 

 becomes globular and is discharged with the faeces. After about 



