EXPLANATION OF PLATE XXIV. {(ontinuej). 

 Fig. 

 43-45. DiNOMONAS TUBERCULATA, S. K. vol. i. p. 422. — 43, Animalcule with prolonged 

 caudal extremity, x 1800; 44, an animalcule devouring a smaller monad ; 

 45, an example with ingested Bacillus. 



46-48. DiNOMONAS V0R.\x, S. K., vol. i. p. 422. — 46, Normal adult type, x 1200 ; 47, 

 more attenuate early condition ; 48, example in the act of devouring a 

 smaller monad. 



49. Chilomonas amygdalum, S. K., vol. i. p. 426, X 1800. 



50. Chilomonas cylindrica, Ehr. sp., vol. i. p. 425, x 500 (BUtschli). 



51,52. Chilomonas Paramecium, Ehr., vol. i. p. 424 (Biitschli). — 51, Normal adult 

 form, X 650 ; 52, example dividing by longitudinal fission. 



53-61. OXYRRHIS marina, Duj., vol. i. p. 427. — 53, A reproduction of Dujardin's 

 original figure ; 54-56, right and left side aspects, as observed by the author, 

 X 800 ; 57, an example of transverse fission ; 58 and 59, empty membran- 

 ous carapaces ; 60 and 61, delineations of the same animalcule as g^ven by 

 Cohn. 



62-64. ASTHM.\TOS CILIARIS, Sals., vol. i. p. 467, X 400 (Salisbury). 



65, 66. Trichonema hirsuta, From., vol. i. p. 469, x 400 (Fromentel). 



67,68. MiTOPHORA DUBIA, Pty., vol. i. p. 469, X 350 (Perty). 



69. Stephanomonas locellus, From, sp., vol. i. p. 466, x 400 (Fromentel). 



70, 71. Heteromastix PROTEIFORMIS, J.-Clk., vol. i. p. 463.— 70, extended, and 

 71, contracted, phases, x 500 (Jas.-Clark). 



72, 73. Mallomonas Plosslii, Pty., vol. i. p. 464, X 800. 



74. ]\L\LL0M0NAS FrESENII, S. K., vol. i. p. 465, X 350. 



