. A manual of zoology. PHYLUM PROTOZOA 4' transverse groove which completely encircles the body ; the former alone acts as an organ of locomotion, the latter lies habitually in the groove and performs undulating move- ments. Noctiluca (Cystoflagellata) (Fig. 16), which is the largest member of the class, being about half a millimetre in diameter, has two flagella, one of which is modified in a remarkable manner. The body of Noctiluca is globular, with a cleft along one side so that it resembles a miniature peach. From this springs a very large and stout flagellum f 'â â lq. Fig. 16. â Noctiluc
. A manual of zoology. PHYLUM PROTOZOA 4' transverse groove which completely encircles the body ; the former alone acts as an organ of locomotion, the latter lies habitually in the groove and performs undulating move- ments. Noctiluca (Cystoflagellata) (Fig. 16), which is the largest member of the class, being about half a millimetre in diameter, has two flagella, one of which is modified in a remarkable manner. The body of Noctiluca is globular, with a cleft along one side so that it resembles a miniature peach. From this springs a very large and stout flagellum f 'â â lq. Fig. 16. â Noctiluca miliaris. a, the adult animal; b, c, flagellulse; l>g, tentacle; ft flagellum; tu, mouth; h, nucleus. (From Lang, after Eiitschli.) or tentick, which is marked with a number of transverse lines or striations ; and a second flagellum, of comparatively small size, lies in the gullet. Though all the Mastigophora are characterised by the possession of flagella, there are a few, such as Mastigamxba (Fig. 13, 4), which also possess pseudopodia, and may be capable of amoeboid movements. Nutrition is effected in a variety of different ways. Some .forms live in decaying organic infusions, not taking in solid food-particles, but absorbing nourishing matter in a dis-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Parker, T. Jeffery (Thomas Jeffery), 1850-1897; Haswell, William A. (William Aitcheson), 1854-1925. New York, The Macmillan Company; London, Macmillan & Co. ,Ltd.
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