GREGAEINA. 101 



twelve days cysts rupture and allow the contained mass of 

 sporocysts to escape. The contents of the cyst are long 

 strings of sporocysts, interspersed with residual protoplasm. 

 Each sporocyst has a thick protective covering and is roughly 

 oval, with the curvature greater on one side than the other. 

 A sporocyst contains eight shapeless sporozoites, grouped 

 four and four at each end. 



Remarks. — The form described above is sufficiently distinct 

 from G. lagenoides (Leger), the only species previously known 

 from Lepisma saccharina Linn. 



Habitat. — Mid-gut of Lepisma saccharina liinn. (1) : Madras, 

 Coonoor. 



36. Gregarina oviceps Diesing. 



Gregarina achetas abbreviatse, Leidy, 1853, p. 238 ; 1856, p. 47. 



Gregarina oviceps, Diesing, 1859, p. 730. 



Gregarina achetse, Lankester, 1863, p. 94. 



Gregarina achetae abbreviatse, Labbe, 1899, p. 35; Crawley, 1903 a, 



p. 45 ; 1903 b, p. 639; 1907, pp. 220-1 ; EUis, 19136, p. 266 ; 



Watson, 1915, p. 34. 

 Gregarina oviceps, Watson, 1916, pp. 101-2, figs. 191-2. 

 ^Gregarina oviceps, Bhatia & Setna, 1924, pp. 287-8. 



Sporonts bi-associative, obese. Ratio of length of pro- 

 tomerite to total length of primite as 1 : 3 or more, width of 

 protomerite to width of deutomerite as 1 : 1-1. Protomerite 

 hemispherical to subglobose, width twice the length or even 

 more. Shght constriction at septum. Deutomerite stout- 

 bodied, nearly as wide as long, up to twice as long as wide ; 

 widest at shoulder, where it is very little wider than proto- 

 merite. Posterior end truncate. Epimerite simple, and 

 elongated like a nipple. Endocyte denser in deutomerite than 

 in the protomerite, and distinctly marked off from the sarco- 

 cyte. Nucleus oval, with fine membrane and many fine 

 chromatin granules. Gametocysts spherical. Spore-ducts 

 2 to 5, with maximum length of 1000 ^i. Sporocysts barrel- 

 shaped. 



Dimensions. — Sporonts, average, 450|u, in length by 225/x 

 in width ; maximum length 500 ft ; gametocj'^sts 250 /x in 

 average diameter ; sporocysts 4-5 /u, by 2-25 /u.. 



Remarks. — The sporonts examined by Bhatia and Setna 

 were shorter and narrower, the ratio of the length of the 

 protomerite to the total length of the primite being as 1 : 4 

 or even 1 : 5-3 instead of 1:3, as given by Watson. The 

 width of protomerite was twice its length or even shghtly 

 more. The deutomerite was stout, and varied from nearly 

 as wide as long up to twice as long as wide. 



Habitat. — Gizzard and mid-gut of Gryllus sp. : Punjab, 

 Lahore. 



