DESCRIPTION OF THE EXGllAVIXGS. 9G1 



seen ; that in the right is tlie normal form ; 6. More magnified view of the fusiform process, 

 showing the terminal depression or aperture. 7-13. Lagotia produeta, its structure and 

 development : 7. Animal extended, in 8 contracted ; 9, 10, 11. Larva or embrvo ; 10 

 represents it attached; 12. Diagram of structure of the sheath, showing the ectoderm 

 (colletoderm) at a, the cliitinous tube at h^ and the endoderm at c ; d points out the mode 

 of overlapping of the several segments of tube ; 13. Highly magnified view of a portion of 

 tube. 14,15. Zooteirea religata : 14. Animal expanded ; 15. Contracted. (5-15, Wright.) 

 16-20. Peridinium uberrimum : 17. Seen on opposite side to that sho^ni in 13; 18. 

 Transverse fission ; 19. Same specimen after the application of solution of iodine ; 20. 

 Nucleus isolated (Allman). 21, 22. P. depressmn : 21. A side-, 22. A front-view. 23. 

 P. longipes. (16-23 after Bailey.) 24-27. Djsteria armata: 25. Parts of mouth ; 26, 27^ 

 Process between two styles: 26. A fx-ont-, and 27 A side-view (Huxley). 28. Turbanella 

 hyalina, dorsal view : d, the muscular oesophagus ; g, testis ; /, mature Qgg ; e^ ovary 

 (X350). 29,30. Chgetonotus maximus : 29. Dorsal view ( x 350) ; 30. A lateral view. 

 31. Ideal section of Turbanella hyalina through the generative organs. (28-31, Schultze.) 

 32-39. Noctiluca militaris : (32. N. punctata, Busch : a, oral cavity or hilum ; h, sharp- 

 bordered rod ; c, nucleus ; d, proboscis [cilium] ; /, brown corpuscles, after Busch ;) 

 33. Front view, a, the tooth ; h, oral apertm-e ; c, position of sujDposed anus (after 

 Webb) ; 34. Dorsal view, showing the groove ; and 35. A latero -inferior view, displajang 

 the oral cavity with the tooth, d ; the cilium a gastric pouch, e ; and a presumed anal 

 aperture (Huxley) ; 36-39 (after Busch) : 36. A germ in process of development ; 37. 

 Brown gi-anular body, seen at / in fig. 32 ; 38. A germ ; 39. Further advanced, acquiring 

 the cliaracters of a Noctiluca. 



PLATE XXXII. (Rotatoria). 



Figures 371, 372. Microcodon Clavus. 373. Cyphonautes compressus. 374-378. 

 Megalotroeha albo-flavicans. 379-382. Tubicolaria'Najas. 383, 383*. Stephanoceros 

 Eichhornii. 384, 385. Floscularia ornata. 386, 387. Melicerta rhigens. 388-392. 

 Limnias Ceratophylli. 393. Enteroplea Hjdatina. 394. Hydatina senta. 395, 396. 

 Plem'otrocha gibba. 



PLATE XXXIII. (Rotatoria). 



Figures 397, 398. Furcularia Reinhardtii. 399 & 417. Monocerca bicornis. 

 400-402, & 425. Polyartlu-a platyptera. 403. Diglena lacustris. 404, 405. D. 

 grandis. 406-408. Triarthra longiseta. 409. Rattulus lunaris. 410, 411. Disteimna 

 Forficula. 412 & 414. Triophthalmus dorsalis. 415. Eosphora Najas. 416. Notom- 

 mata Copeus. 418-420. N. Myi-meleo. 421. N. Tigris. 422. Synchivta pectiuata. 

 423, 4254. Scaridium longicauda. 



PLATE XXXIV. (Rotatoria). 



Figures 425* 426. Cycloglena Lupus. 427^29. Theorus vemalis. 430-433. 

 Lepadella ovalis. 434-437. Monostyla quadridentata. 438-440. Mastigocerca carinata. 

 441-444. Euchlanis? triquetra. 445, 446. E. Lynceus. 447-^53. Salpina mucronata. 

 454-456. Dinocharis Pocillum. 457-459. Monura dulcis. 460-462. Colurus deflexus. 

 463-465. Metopidia Lepadella. 466, 467. Stephanops lamellaris. 468, 469. Squa- 

 mella oblonga. 470-473. Callidina elegans. 



PLATE XXXV. (Rotatoria). 



Figure 474. Hydrias cornigera. 475. Typhlina viridis. 476-480. Rotifer vul- 

 garis. 481-484. Actinm'us Neptunius. 485, 486. Monolabis conica. 487-489. 

 Philodina aculeata. 490. P. roseola. 491-494. Noteus quadricornis. 495-497. 

 Anurgea Squamula, 498. A. stipitata. 499-501. Brachionus polyacanthus.. 502-504. 

 Pterodina Patina. 505. P. clypeata. 



PLATE XXXVI. (Rotatoria). 



Figure 1. Melicerta ringens, protruded and fully expanded, with the upper part of ita 

 tube at a ; ^, one of the tactile tubes ; the circular disc at c is the pellet-cup ; at m are the 

 jaws and gizzard (oesophageal head) ; and below, the stomach ; c, a much less magnified 



3 Q 



