Elementary text-book of zoology . elementarytextbo0101clau Year: 1884 FIG. 149.—Gregarina (after Stein and Kolliker). a, Sty- lorhynchus oliffacanthus out of the intestine ofCallopteryx. b, Gregarina (Clepsidrina) polymorpha from intestine of the meal beetle, during conjugation, c, The same in process of eucystmeiit. d, Encysted Gregarina. e, Stage of formation of Pseudonavicella?. f, Pseudo- navicellacyst with ripe Pseudonavicella;.

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