THE C(EL01\IK! FLUID IN AGANTHODRILIDS. 589 



e. GooDKiCH, E. S. — "Notes on Oligoclipefes, etc.," ' Quart. Journ. Micros. 

 Sci.,* vol. xxxix, 1890, p. 51. 



7. KuKENTiiAL, W. — "Die Lymphoidzellen der Anneliden," 'Gen. Zeit.,' 



1885. 



8. Ling Boom Keng. — "On the Creloniic Fluid of Lumbricus ter- 



restris," 'Phil. Trans.,' 186, A. 1895, p. 383. 



9. PiCTON, L. J. — "On the Heart, Body, and Coeloniic Fluid of certain 



Poijchseta," 'Quart. Jonrn. Micros. Sci.,' vol. xli, 1898, p. 263. 

 10. EosA, D.— "I lincrocili degli Oligocheti," 'Mem. Accad. R. d. Sci. 



Torino,' 2nd series, vol. xlvi, 1896, p. 149. 

 See also Lankester, E. Ray, " On some Migrations of Cells," ' Quart. 



Journ. Micr. Sci.,' vol. x, 1870, p. 265. 



EXPLANATION OF PLATE 41, 



Illustrating Professor W. Blaxland Benham's paper on " The 

 Coelomic Fluid in Acauthodrilids." 



Fig. 1. — A group of coelomic corpuscles of Octochfetus niulliporus, 

 fresh, without reagent. (Camera. X 375.) a. Anioebocyte. I). Eleocyte. 

 c. Lamprocyte. d. Ijiuocyte. 



Fig. 2. — A granular anioebocyte {a of Fig. 1), the appearance described in 

 ordinary preparations, with short, clear, digitiform pseudopods. 



Fig. 3. — An amoebocyte with |)etaloid processes; seen when the greatest 

 care is taken to obtain a preparation in a natural condition. 



Fig. i. — Spindle-shaped, faintly granular amoebocyte; found creeping along 

 the inner surface of the body-wall. 



Fig. 5. — An eleocyte, sliglitly compressed, but without having been acted 

 upon by any reagent. In addition to the characteristic oily globules, it con- 

 tains a few refringent granules ; the vacuole in which each lies is not seen. 



Fig. 6. — A typical lamprocyte, slightly compressed, fresh ; the vacuoles, 

 with their highly refringent granules, are also shown at G, a, as seen when a 

 cell is broken up. 



Fig. 7. — A cell intermediate in character, combining the features of both 

 eleocyte and lamprocyte, slightly compressed, fresh. 



