4, s s. GOTO. 



lesx oliliternted, as mny be seen in tlic figures iibove referred to. In 

 2[. reticiihila, ihe endoparenchyma of which consists generally of a 

 typical, reticulated fibrous connective tissue, there are scattered here 

 and there, sometimes in small groups, cells of a roundish or polyhedral 

 (Uitline, with a distinct membrane and a lightly stained, granular 

 protoplasm (1^1. Ill, fig. 4, mex. c). Besides these, vacuolated cells 

 whose boundaries can be recognized with difficulty are also to 

 be observed. In Dididopliora scssilis, I have observed in the 

 neighbourhood of the ovar}^, large vacuolated cells with a centrally 

 situated nucleus, from which granular protoplasmic threads radiated 

 towards the cell- membrane (PL XI, fig. 7) — cells, therefore, which 

 are very similar to those of the mesenchyma of many distomes. In 

 this species there are also polyhedral cells similar to those described in 

 J/, tnmcata and M. cuii(hita, between the lateral and the median 

 ])ortion of the body (PI. XI, fig. 5). In M. cliiri (PL IIL fig. 5), M. 

 defiaHs (PL y, fig. 2), il/, sciacnai' (PL A^I, fig. :2), CtiUcotijJc MitHithin'/ 

 (PL XIX, fig. 8), Monocoti/h Ijimac (PL XYIII, fig. 2), (hichocot>ile 

 spinacis (PL XY, 10 ; PL XYI, fig. 8), and THstoimim ovale {VI 

 XXIII, fig. 7),. and in those portions of the body of ]\[. ftisifoniiis and 

 i)/. caudata which adjoin the genital oj^ening, the endopai-enchyma 

 consists of a reticulated, fibrous connective ti.ssue with hirge meshes 

 filled with granules which are in some species faintl}', but in others 

 well stained (PL V. figs. 1, 2, and 3) — the mesenchyma assuming in 

 tlie latter case more the character of a syncytium. In some species 

 moreover, as in OncliocotjiIe spiuacis, the nuclei are generally surrounded 

 by a scanty mass of granular, well-stained protoplasm. 



In Hexacotijlc acuta, the greater part of the endoparenchyma 

 consists of cells apparently destitute of any memljrane, but with well- 

 stîiined, granular protoplasm, and each with a distinct nucleus which 

 encloses one or a few nucleoli. 'J'hese cells are usutdly separated from 



