EXPLANATION OF PLATES 



All figures of Trichonymplia campanula sp. nov. from Tennopsis angusticollis 

 Walker, stained with iron haematoxylin and drawn with camera lucida. Mag- 

 nification 800, unless otherwise stated. 



PLATE 5 



Fig. 1. Normal trophozoite showing the three zones of flagella, surface ridges 

 of the body, and eentroblepharoplast. X 300. 



Fig. 2. Optical section of anterior part of the body, showing the differen- 

 tiations of ectoplasm and endoplasm with the longitudinal myonemes in the latter, 

 and part of the eentroblepharoplast. X 300. 



Fig. 3. Surface view of anterior end showing surface ridges, the cuplike 

 depression with end of eentroblepharoplast at its base and its covering operculum. 

 Internally the ectoplasm and endoplasm may be seen with the vacuoles near the 

 base of the eentroblepharoplast. 



Fig. 4. Semidiagrammatic cross-section of body in the region of the nucleus, 

 showing origin of flagella from crests of surface ridges, ectoplasm, endoplasm, 

 and the longitudinal myonemes in the latter. X 300. 



Fig. 5. Optical section of anterior portion of the body showing striate appear- 

 ance of ectoplasm, with its different layers, and the circular vacuole at the base 

 of the eentroblepharoplast. X 300. 



Fig. 6. Optical section of entire body showing extent of differentiated ecto- 

 plasm and the two regions of endoplasm. Dark granules are probably remnants 

 of ingested bacteria. X 300. 



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