DESCRIPTION OF PLATE V. 

 Illustrating Mr. Huxley's Paper on Noctiluca. 



Fig. 



1. — Noctiluca miliaris, from above. 



2.— The animal viewed from behind, showing the groove. 



3. — A latero-inferior view, displaying the oral aperture, the cilium, the 

 tooth, a gastric pouch, and the anal (?) aperture. 



4. — The oral aperture on a larger scale. 



5. — Antero -superior view, showing the nucleus, the fibres and fibrils, the 

 tooth and the reproductive (?) granules. 



6. — The superficial network of granules and fibrils. 



a. Tentacle, h, groove, c, nucleus, d, tooth, e, gastric pouches. 

 /, anal aperture, g, radiating fibres and fibrils. /(, repro- 

 ductive (?) granules. 



